{ "dataset": "Great Falls, MT storm events — 12-month window, 25-mile radius plus Cascade records (floods and special weather statements excluded, matching the city page)", "license": "https://www.stormauditor.com/data-license", "provenance": "Consolidated by StormAuditor from public NOAA/NWS records (warnings, Local Storm Reports, NCEI Storm Events) under the published methodology at https://www.stormauditor.com/methodology", "refreshed_at": "2026-09-20T08:20:22.677+00:00", "window_days": 365, "schema_version": "2.0.0", "event_count": 336, "fields": { "id": "stable event identifier (source-derived)", "date": "event date (YYYY-MM-DD, local storm day)", "county": "county or county-equivalent (may be blank)", "city": "place name from the source record (LSR names may carry a distance/direction prefix)", "zip": "ZIP code when the source provides one (may be blank)", "eventType": "hazard tag: wind | hail | tornado | flood | lightning", "severity": "StormAuditor severity bucket (low|moderate|high|severe)", "evidenceLevel": "evidence level of the source record (warning|observed|...)", "confidence": "StormAuditor confidence score for the record (0-1, may be absent)", "windSpeedMph": "reported/estimated wind gust, mph (absent if n/a)", "hailSizeInches": "reported/estimated hail size, inches (absent if n/a)", "tornadoScale": "EF-scale rating when the source provides one (absent if n/a)", "damageTypes": "damage tags from the source narrative (may be absent)", "description": "source narrative excerpt (may be absent)", "source": "originating public record (NWS warning, LSR, NCEI, ...)", "sourceDetail": "issuing office / product detail for the source (may be absent)", "originStation": "reporting station identifier when applicable (may be absent)", "warningProductKey": "NWS warning product key for warning-derived rows (may be absent)", "lat": "event latitude (WGS84, may be blank)", "lon": "event longitude (WGS84, may be blank)", "rawWindSpeedMph": "source-reported wind value before display screening, mph (may be absent)", "windSpeedDisclaimer": "set when the wind value is a warning-projected figure rather than a measurement (may be absent)" }, "events": [ { "id": "spc-2026-09-13-hail-47.09-2", "lat": 47.09, "lon": -111.02, "zip": "", "city": "9 W Monarch", "date": "2026-09-13", "county": "Cascade", "source": "SPC Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.93, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "hail reported near 9 W Monarch", "sourceDetail": "SPC filtered reports — 2026-09-13", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-lsr-2026-09-13-hail-47.09--111.02", "lat": 47.09, "lon": -111.02, "zip": "", "city": "9 W Monarch", "date": "2026-09-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Location estimated.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.88 }, { "id": "spc-2026-09-13-hail-47.15-4", "lat": 47.15, "lon": -110.84, "zip": "", "city": "4 N Monarch", "date": "2026-09-13", "county": "Cascade", "source": "SPC Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.93, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "hail reported near 4 N Monarch", "sourceDetail": "SPC filtered reports — 2026-09-13", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "asos-GTF-2026-09-10-75606", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-09-10", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 51 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "asos-GTF-2026-09-10-75875", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-09-10", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 54 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-122-Cascade-wind-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-122" }, { "id": "iem-ww-TFX-SV-W-122-Cascade-hail-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-122" }, { "id": "iem-ww-TFX-SV-W-125-Cascade-wind-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-125" }, { "id": "iem-ww-TFX-SV-W-125-Cascade-hail-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "TFX-SV-W-125" }, { "id": "iem-ww-TFX-SV-W-126-Cascade-wind-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-126" }, { "id": "iem-ww-TFX-SV-W-126-Cascade-hail-2026-09-06", "zip": "", "city": "Cascade", "date": "2026-09-06", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-06. Storm tag hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "TFX-SV-W-126" }, { "id": "iem-lsr-2026-09-02-wind-47.14--111.86", "lat": 47.14, "lon": -111.86, "zip": "", "city": "7 NE Craig", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTYEP MDT - Gary Cooper Bridge - Dearborn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station SURM8 Sun River Se.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "spc-2026-09-02-wind-47.33-78", "lat": 47.33, "lon": -111.48, "zip": "", "city": "7 SSE Ulm", "date": "2026-09-02", "county": "Cascade", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.93, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "wind reported near 7 SSE Ulm", "sourceDetail": "SPC filtered reports — 2026-09-02", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-09-02-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 4 E Cascade", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 S Sun River", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 8 S Sun River", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-09-02", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station BLWM8 Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.28--111.43", "lat": 47.28, "lon": -111.43, "zip": "", "city": "11 SSE Ulm", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "59 mph thunderstorm wind gust. Time estimated.", "sourceDetail": "NWS TFX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-09-02-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station ENWM8 Eden Nw.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.43--111.51", "lat": 47.43, "lon": -111.51, "zip": "", "city": "Ulm", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "In addition_ sustained winds of 40-50 mph unknown time frame for sustained winds.", "sourceDetail": "NWS TFX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-09-02-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-09-02", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station ELTM8 Belt Nw.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "asos-GTF-2026-09-02-24109", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-09-02", "county": "Cascade", "source": "IEM ASOS Station", "severity": "severe", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 83 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 83, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 5 NW Belt", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.79--111.60", "lat": 47.79, "lon": -111.6, "zip": "", "city": "6 SE Dutton", "date": "2026-09-02", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station DAHMT Dahlman.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.53--111.50", "lat": 47.53, "lon": -111.5, "zip": "", "city": "1 WSW Sun Prairie", "date": "2026-09-02", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW5493 Vaughn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2026-09-02", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station HIWM8 Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-09-02-wind-47.69--110.90", "lat": 47.69, "lon": -110.9, "zip": "", "city": "Highwood Bench", "date": "2026-09-02", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near Highwood Bench", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 80, "evidenceLevel": "observed" }, { "id": "asos-GFA-2026-09-02-24147", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-09-02", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 67 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA)", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "asos-GTF-2026-09-02-24257", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-09-02", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 70 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "asos-GFA-2026-09-02-24425", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-09-02", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 61 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA)", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-113-Cascade-wind-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-113" }, { "id": "iem-ww-TFX-SV-W-113-Cascade-hail-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-113" }, { "id": "iem-ww-TFX-SV-W-112-Cascade-wind-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-112" }, { "id": "iem-ww-TFX-SV-W-112-Cascade-hail-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-112" }, { "id": "iem-ww-TFX-SV-W-111-Cascade-wind-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-111" }, { "id": "iem-ww-TFX-SV-W-111-Cascade-hail-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-111" }, { "id": "iem-ww-TFX-SV-W-109-Cascade-wind-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-109" }, { "id": "iem-ww-TFX-SV-W-109-Cascade-hail-2026-09-02", "zip": "", "city": "Cascade", "date": "2026-09-02", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-09-02. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-109" }, { "id": "spc-2026-09-02-wind-47.43-93", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-09-02", "county": "Cascade", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.93, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "wind reported near 5 NW Belt", "sourceDetail": "SPC filtered reports — 2026-09-02", "windSpeedMph": 70, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-08-27-wind-47.53--111.50", "lat": 47.53, "lon": -111.5, "zip": "", "city": "1 WSW Sun Prairie", "date": "2026-08-27", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Corrects previous tstm wnd gst report from 1 WSW Sun Prairie. At 5:15 PM_ the CWOP FW5493 Vaughn reported a wind gust of 60 MPH.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-08-27-wind-47.46--111.02", "lat": 47.46, "lon": -111.02, "zip": "", "city": "7 NW Belt", "date": "2026-08-27", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "An Ambient Weather station in Fife MT reported a wind gust of 62.9 MPH.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "reported" }, { "id": "iem-ww-TFX-SV-W-102-Cascade-wind-2026-08-27", "zip": "", "city": "Cascade", "date": "2026-08-27", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-27. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-102" }, { "id": "iem-ww-TFX-SV-W-102-Cascade-hail-2026-08-27", "zip": "", "city": "Cascade", "date": "2026-08-27", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-27. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-102" }, { "id": "iem-lsr-2026-08-26-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-08-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-08-18-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-08-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-94-Cascade-wind-2026-08-17", "zip": "", "city": "Cascade", "date": "2026-08-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-17. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-94" }, { "id": "iem-ww-TFX-SV-W-94-Cascade-hail-2026-08-17", "zip": "", "city": "Cascade", "date": "2026-08-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-17. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-94" }, { "id": "iem-ww-TFX-SV-W-93-Cascade-wind-2026-08-17", "zip": "", "city": "Cascade", "date": "2026-08-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-17. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-93" }, { "id": "iem-ww-TFX-SV-W-93-Cascade-hail-2026-08-17", "zip": "", "city": "Cascade", "date": "2026-08-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-08-17. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-93" }, { "id": "iem-lsr-2026-07-25-wind-47.31--110.80", "lat": 47.31, "lon": -110.8, "zip": "", "city": "4 NW Raynesford", "date": "2026-07-25", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 4 NW Raynesford", "sourceDetail": "NWS TFX — Other Federal via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "asos-GTF-2026-07-24-4948", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-07-24", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 51 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-07-24", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-07-24", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-18-wind-47.14--111.86", "lat": 47.14, "lon": -111.86, "zip": "", "city": "7 NE Craig", "date": "2026-07-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTYEP MDT - Gary Cooper Bridge - Dearborn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-GTF-2026-07-18-5357", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-07-18", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 70 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-18-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-07-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-82-Cascade-wind-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-82" }, { "id": "iem-ww-TFX-SV-W-82-Cascade-hail-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-82" }, { "id": "iem-ww-TFX-SV-W-76-Cascade-wind-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-76" }, { "id": "iem-ww-TFX-SV-W-76-Cascade-hail-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-76" }, { "id": "iem-ww-TFX-SV-W-81-Cascade-wind-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-81" }, { "id": "iem-ww-TFX-SV-W-81-Cascade-hail-2026-07-18", "zip": "", "city": "Cascade", "date": "2026-07-18", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-18. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-81" }, { "id": "asos-GFA-2026-07-18-5541", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-07-18", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 61 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA)", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-17-wind-47.33--111.48", "lat": 47.33, "lon": -111.48, "zip": "", "city": "7 SSE Ulm", "date": "2026-07-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 7 SSE Ulm", "sourceDetail": "NWS TFX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-07-17-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-07-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-17-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-07-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "asos-GTF-2026-07-17-5639", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-07-17", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF)", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-71-Cascade-wind-2026-07-17", "zip": "", "city": "Cascade", "date": "2026-07-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-17. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-71" }, { "id": "iem-ww-TFX-SV-W-71-Cascade-hail-2026-07-17", "zip": "", "city": "Cascade", "date": "2026-07-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-17. Storm tag hail: 1.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.75, "warningProductKey": "TFX-SV-W-71" }, { "id": "iem-ww-TFX-SV-W-72-Cascade-wind-2026-07-17", "zip": "", "city": "Cascade", "date": "2026-07-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-17. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-72" }, { "id": "iem-ww-TFX-SV-W-72-Cascade-hail-2026-07-17", "zip": "", "city": "Cascade", "date": "2026-07-17", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-17. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-72" }, { "id": "iem-ww-TFX-SV-W-58-Cascade-wind-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-58" }, { "id": "iem-ww-TFX-SV-W-58-Cascade-hail-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "TFX-SV-W-58" }, { "id": "iem-ww-TFX-SV-W-63-Cascade-wind-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-63" }, { "id": "iem-ww-TFX-SV-W-63-Cascade-hail-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "TFX-SV-W-63" }, { "id": "iem-ww-TFX-SV-W-54-Cascade-wind-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-54" }, { "id": "iem-ww-TFX-SV-W-54-Cascade-hail-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-54" }, { "id": "iem-ww-TFX-SV-W-67-Cascade-wind-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-67" }, { "id": "iem-ww-TFX-SV-W-67-Cascade-hail-2026-07-16", "zip": "", "city": "Cascade", "date": "2026-07-16", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-16. Storm tag hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "TFX-SV-W-67" }, { "id": "asos-bf-GTF-2026-07-12", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-07-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 64 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-12-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 SW Great Falls", "date": "2026-07-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 5 SW Great Falls", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "reported" }, { "id": "iem-ww-TFX-SV-W-41-Cascade-wind-2026-07-12", "zip": "", "city": "Cascade", "date": "2026-07-12", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-12. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-41" }, { "id": "iem-ww-TFX-SV-W-41-Cascade-hail-2026-07-12", "zip": "", "city": "Cascade", "date": "2026-07-12", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-12. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-41" }, { "id": "iem-ww-TFX-SV-W-40-Cascade-wind-2026-07-12", "zip": "", "city": "Cascade", "date": "2026-07-12", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-12. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-40" }, { "id": "iem-ww-TFX-SV-W-40-Cascade-hail-2026-07-12", "zip": "", "city": "Cascade", "date": "2026-07-12", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-07-12. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-40" }, { "id": "iem-ww-TFX-SV-W-18-Cascade-wind-2026-06-25", "zip": "", "city": "Cascade", "date": "2026-06-25", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-06-25. Storm tag wind: 50 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-18" }, { "id": "iem-ww-TFX-SV-W-18-Cascade-hail-2026-06-25", "zip": "", "city": "Cascade", "date": "2026-06-25", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-06-25. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "TFX-SV-W-18" }, { "id": "asos-bf-GTF-2026-06-16", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-06-16", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 55 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-12-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-06-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-06-12", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-06-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "severe", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 75 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 75, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-06-07", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-06-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 51 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-05-14", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-05-14", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.33--111.48", "lat": 47.33, "lon": -111.48, "zip": "", "city": "7 SSE Ulm", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 7 SSE Ulm", "sourceDetail": "NWS TFX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-05-13-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MT Mesonet Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2026-05-13", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-05-13-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-05-13", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-05-13", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-05-13", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 69 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-4-Cascade-wind-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-4" }, { "id": "iem-ww-TFX-SV-W-4-Cascade-hail-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-4" }, { "id": "iem-ww-TFX-SV-W-6-Cascade-wind-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-6" }, { "id": "iem-ww-TFX-SV-W-6-Cascade-hail-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-6" }, { "id": "iem-ww-TFX-SV-W-1-Cascade-wind-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-1" }, { "id": "iem-ww-TFX-SV-W-1-Cascade-hail-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-1" }, { "id": "iem-ww-TFX-SV-W-3-Cascade-wind-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-3" }, { "id": "iem-ww-TFX-SV-W-3-Cascade-hail-2026-05-13", "zip": "", "city": "Cascade", "date": "2026-05-13", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2026-05-13. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-3" }, { "id": "asos-bf-GFA-2026-05-13", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-05-13", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 61 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-04-22", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-04-22", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-04-07", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-04-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 61 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-04-07-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-04-07", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-25", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-25", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 55 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-20-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-20", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-20-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-03-20", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-03-20", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-03-20", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-20", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-20", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-19-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-03-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-19-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-19-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-03-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Sun River SE.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-19-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-03-19", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-03-19", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-03-19", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-19", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-19", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-18-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-03-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Eden NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-18", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-18", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-17-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-17-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-17", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-17", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 64 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-16-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-16", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-16", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Eden NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Sun River SE.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-03-12", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 7 ENE Power", "sourceDetail": "NWS TFX — Other Federal via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.17--110.85", "lat": 47.17, "lon": -110.85, "zip": "", "city": "5 N Monarch", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Northwest Energy sensor.", "sourceDetail": "NWS TFX — Utility Company via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet Eden NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 76, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Corrects previous non-tstm wnd gst report from 10 WSW Stockett. Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "RSOIS observations at NWS Great Falls.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 76, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 5 WSW Great Falls", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 79, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-12", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "severe", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 80 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 80, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Sun River SE.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 89, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Corrects previous non-tstm wnd gst report from 3 NNE Monarch. Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 90, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 5 WSW Great Falls", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-12-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2026-03-12", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 77, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-12-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-03-12", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-03-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 59 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-11-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-03-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-11-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-03-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-11", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-11", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Belt NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-08-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2026-03-08", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "RSOIS observations at NWS Great Falls.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-03-08-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.79--111.60", "lat": 47.79, "lon": -111.6, "zip": "", "city": "6 SE Dutton", "date": "2026-03-08", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station DAHMT Dahlman.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-03-08", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Sun River SE.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 73, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2026-03-08", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Eden NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.79--111.60", "lat": 47.79, "lon": -111.6, "zip": "", "city": "6 SE Dutton", "date": "2026-03-08", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station DAHMT Dahlman.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2026-03-08", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Eden NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-08-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-geo-2026-03-08-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2026-03-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.9, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Sun River SE measured sustained winds averaging 56 mph between 1050AM and the report time.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet (GeoJSON)", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-08", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-08", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 73 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 73, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-03-08", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-03-08", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 63 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-07-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-03-07", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-03-07", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-03-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-03-07", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-03-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 54 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-02-26", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-02-26", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 63 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-26-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-26-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-26-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Belt NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-02-26-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Belt NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-02-26-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Belt NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-02-26-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-26-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-26-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-02-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "RSOIS observation at NWS Great Falls.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "reported" }, { "id": "asos-bf-GFA-2026-02-26", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-02-26", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 58 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-25-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-02-25", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "65 mph wind gust at Cascade MDA Montana Mesonet site.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-25-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-02-25", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-02-25-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-02-25", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-02-25", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-02-25", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-01-30", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-01-30", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 60 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-12-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-01-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-12-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2026-01-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NWS Observation.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-01-12-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-01-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-12-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-01-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "58 mph wind gust at Belt NW Montana Mesonet site.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-01-12-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2026-01-12", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-01-12", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-01-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 54 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-01-12", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-01-12", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 65 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-01-11", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-01-11", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-01-07", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-01-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-06-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-06-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-06-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-06-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MT Mesonet Eden NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-01-06-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-06-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2026-01-06", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MT mesonet Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2026-01-06", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2026-01-06", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2026-01-06", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2026-01-06", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 57 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-27-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2025-12-27", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet site Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-26-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "62 mph convective wind gust at the NWS Office in Great Falls.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-26-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport. Convective wind gust. Lightning developed south of town after the wind went through.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-ww-TFX-SV-W-165-Cascade-wind-2025-12-26", "zip": "", "city": "Cascade", "date": "2025-12-26", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2025-12-26. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "TFX-SV-W-165" }, { "id": "iem-ww-TFX-SV-W-165-Cascade-hail-2025-12-26", "zip": "", "city": "Cascade", "date": "2025-12-26", "county": "Cascade", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS TFX for Cascade on 2025-12-26. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS TFX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "TFX-SV-W-165" }, { "id": "asos-bf-GTF-2025-12-26", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-26", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 65 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "ncei-1306689-2025-12-26", "lon": 209606, "zip": "", "city": "(GTF)GREAT FALLS ARPT", "date": "2025-12-26", "county": "Cascade", "source": "NCEI Storm Events Database", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "RSOIS equipment at wfo Great Falls measured a 62 mph gust associated with a convective shower.", "sourceDetail": "Verified by Official NWS Observations — NCEI Event #1306689", "windSpeedMph": 54, "evidenceLevel": "official_backfill" }, { "id": "iem-lsr-2025-12-19-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-19-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2025-12-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-19", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-19", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 61 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-19-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-19", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-19", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-19", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 53 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-18-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-18-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-18-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2025-12-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Belt NW (Montana Mesonet) reported a 58 mph wind gust.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-18-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2025-12-18", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Eden NW (Montana Mesonet) reported a 58 mph wind gust.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "asos-bf-GTF-2025-12-18", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-18", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-18", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-18", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 50 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.66--111.71", "lat": 47.66, "lon": -111.71, "zip": "", "city": "4 SSW Power", "date": "2025-12-17", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM54 4.4 SW Power (MT-MESO).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.53--111.50", "lat": 47.53, "lon": -111.5, "zip": "", "city": "1 WSW Sun Prairie", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW5493 Vaughn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.14--111.86", "lat": 47.14, "lon": -111.86, "zip": "", "city": "7 NE Craig", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTYEP MDT - Gary Cooper Bridge - Dearborn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.32--111.47", "lat": 47.32, "lon": -111.47, "zip": "", "city": "8 SSE Ulm", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1IM India.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.54--111.33", "lat": 47.54, "lon": -111.33, "zip": "", "city": "3 WNW Black Eagle", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Ambient weather station.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-17-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2025-12-17", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.79--111.60", "lat": 47.79, "lon": -111.6, "zip": "", "city": "6 SE Dutton", "date": "2025-12-17", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station DAHMT Dahlman.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2025-12-17", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.75--111.55", "lat": 47.75, "lon": -111.55, "zip": "", "city": "7 ENE Power", "date": "2025-12-17", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1JM 6 ENE Power.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.79--111.60", "lat": 47.79, "lon": -111.6, "zip": "", "city": "6 SE Dutton", "date": "2025-12-17", "county": "Teton", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station DAHMT Dahlman.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Eden NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 75, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-17-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Sun River SE.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.43--111.02", "lat": 47.43, "lon": -111.02, "zip": "", "city": "5 NW Belt", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Belt NW.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.69--111.47", "lat": 47.69, "lon": -111.47, "zip": "", "city": "10 NNE Vaughn", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Benton Lake W.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-17-wind-47.50--111.17", "lat": 47.5, "lon": -111.17, "zip": "", "city": "1 ESE Malmstrom Afb", "date": "2025-12-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station KGFA Malmstrom AFB.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-17", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-17", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 71 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 71, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-17", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-17", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 58 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.48--111.38", "lat": 47.48, "lon": -111.38, "zip": "", "city": "4 WSW Great Falls", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "58 mph gust at Great Falls International Airport ASOS.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-16-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2025-12-16", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Highwood Bench (Montana Mesonet) reported a 61 mph Wind Gust.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Sun River SE (Montana Mesonet) measure a wind gust of 64 mph.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-16-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-16", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-16", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-16", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 62 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-16", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-16", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-15-wind-47.53--111.50", "lat": 47.53, "lon": -111.5, "zip": "", "city": "1 WSW Sun Prairie", "date": "2025-12-15", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW5493 Vaughn.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-15-wind-47.32--111.33", "lat": 47.32, "lon": -111.33, "zip": "", "city": "8 WSW Stockett", "date": "2025-12-15", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana Mesonet site Eden NW.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-15-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-15", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-15-wind-47.28--110.80", "lat": 47.28, "lon": -110.8, "zip": "", "city": "3 WNW Raynesford", "date": "2025-12-15", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "AWOS station K1AM Alpha.", "sourceDetail": "NWS TFX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-15-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-15", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-15", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-15", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-15", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-15", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 54 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-11-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-11-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-11-wind-47.46--111.39", "lat": 47.46, "lon": -111.39, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "61 mph wind gust at the NWS Office in Great Falls.", "sourceDetail": "NWS TFX — Official NWS Obs via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-11-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2025-12-11", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "63 mph wind gust.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-11", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-11", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 60 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-10-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-10", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-09-wind-47.41--111.72", "lat": 47.41, "lon": -111.72, "zip": "", "city": "8 SSE Fort Shaw", "date": "2025-12-09", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "59 mph wind gust at Sun River SE MT Mesonet site. SURM8.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-09-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-12-09", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-09", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-09", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 63 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-09-wind-47.30--111.36", "lat": 47.3, "lon": -111.36, "zip": "", "city": "10 WSW Stockett", "date": "2025-12-09", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station FW1843 Great Falls.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-09-wind-47.14--110.82", "lat": 47.14, "lon": -110.82, "zip": "", "city": "3 NNE Monarch", "date": "2025-12-09", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTMON Monarch Canyon (MT DOT).", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-08-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-08-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-12-08", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-12-08", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-12-08", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 55 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-12-08", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-12-08", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 58 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-11-14-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-11-14", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-11-14", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-11-14", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-11-13", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-11-13", "county": "Cascade", "source": "IEM ASOS Station", "severity": "high", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 59 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-11-07-wind-47.48--111.42", "lat": 47.48, "lon": -111.42, "zip": "", "city": "5 SE Sun Prairie", "date": "2025-11-07", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Ambient Weather station measured a 62 mph wind gust.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-11-07-wind-47.53--111.32", "lat": 47.53, "lon": -111.32, "zip": "", "city": "2 WNW Black Eagle", "date": "2025-11-07", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Ambient Weather Station measured a 62 mph wind gust.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 62, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-11-07-wind-47.54--111.33", "lat": 47.54, "lon": -111.33, "zip": "", "city": "3 WNW Black Eagle", "date": "2025-11-07", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Ambient Weather Station measured a 59 mph wind gust.", "sourceDetail": "NWS TFX — Public via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "reported" }, { "id": "asos-bf-GTF-2025-11-07", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-11-07", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 56 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-11-02", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-11-02", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-11-01", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-11-01", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-10-29-wind-47.68--110.90", "lat": 47.68, "lon": -110.9, "zip": "", "city": "7 ESE Floweree", "date": "2025-10-29", "county": "Chouteau", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Montana mesonet station Highwood Bench.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-10-29", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-10-29", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 54 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "asos-bf-GFA-2025-10-29", "lat": 47.5047, "lon": -111.1873, "zip": "", "city": "MALMSTROM AFB", "date": "2025-10-29", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "MALMSTROM AFB (GFA) recorded a 51 mph gust.", "sourceDetail": "MT_ASOS automated observation — MALMSTROM AFB (GFA) [365d backfill 2026-08]", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-10-26-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-10-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-10-26-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-10-26", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-10-26", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-10-26", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 57 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-10-25", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-10-25", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 52 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-10-21-wind-47.28--111.62", "lat": 47.28, "lon": -111.62, "zip": "", "city": "4 E Cascade", "date": "2025-10-21", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Mesonet station MTM76 Cascade E Mda.", "sourceDetail": "NWS TFX — Mesonet via Iowa Mesonet", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-10-17-wind-47.47--111.38", "lat": 47.47, "lon": -111.38, "zip": "", "city": "5 WSW Great Falls", "date": "2025-10-17", "county": "Cascade", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "ASOS station KGTF Great Falls Airport.", "sourceDetail": "NWS TFX — ASOS via Iowa Mesonet", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "asos-bf-GTF-2025-10-17", "lat": 47.4733, "lon": -111.3822, "zip": "", "city": "GREAT FALLS INTL", "date": "2025-10-17", "county": "Cascade", "source": "IEM ASOS Station", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "GREAT FALLS INTL (GTF) recorded a 55 mph gust.", "sourceDetail": "MT_ASOS automated observation — GREAT FALLS INTL (GTF) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" } ] }