{ "dataset": "Des Moines, IA storm events — 12-month window, 25-mile radius plus Polk 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": "2026-09-20T10:10:20.982+00:00", "window_days": 365, "schema_version": "2.0.0", "event_count": 227, "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-2026-09-08-wind-41.83-2", "lat": 41.83, "lon": -93.8, "zip": "", "city": "3 SSE Madrid", "date": "2026-09-08", "county": "Polk", "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 3 SSE Madrid", "sourceDetail": "SPC filtered reports — 2026-09-08", "windSpeedMph": 74, "evidenceLevel": "reported" }, { "id": "spc-2026-09-08-wind-41.76-4", "lat": 41.76, "lon": -93.62, "zip": "", "city": "2 NW Ankeny", "date": "2026-09-08", "county": "Polk", "source": "SPC Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.93, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "wind reported near 2 NW Ankeny", "sourceDetail": "SPC filtered reports — 2026-09-08", "windSpeedMph": 75, "evidenceLevel": "reported" }, { "id": "nws-alert-ef7cd8aafaba52b4.001-Polk-wind", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "source": "NWS Weather Alert", "severity": "high", "eventType": "wind", "confidence": 88, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning for Polk. Severe Thunderstorm Warning issued September 8 at 6:04PM CDT until September 8 at 6:30PM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-333" }, { "id": "iem-ww-DMX-SV-W-333-Polk-hail-2026-09-08", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "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 DMX for Polk on 2026-09-08. Storm tag hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-333" }, { "id": "spc-2026-09-08-hail-41.73-1", "lat": 41.73, "lon": -93.6, "zip": "", "city": "Ankeny", "date": "2026-09-08", "county": "Polk", "source": "SPC Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 0.93, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "hail reported near Ankeny", "sourceDetail": "SPC filtered reports — 2026-09-08", "evidenceLevel": "reported", "hailSizeInches": 2.25 }, { "id": "iem-lsr-2026-09-08-hail-41.66--93.49", "lat": 41.66, "lon": -93.49, "zip": "", "city": "1 NW Altoona", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Time estimated.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.88 }, { "id": "iem-lsr-2026-09-08-hail-41.74--93.55", "lat": 41.74, "lon": -93.55, "zip": "", "city": "2 E Ankeny", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Trained spotter reported largest hail around 1.5 inches and minor siding damage.", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-lsr-2026-09-08-hail-41.70--93.48", "lat": 41.7, "lon": -93.48, "zip": "", "city": "1 NW Bondurant", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Report from mPING: Half Dollar (1.25 in.).", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-lsr-2026-09-08-hail-41.70--93.54", "lat": 41.7, "lon": -93.54, "zip": "", "city": "4 SE Ankeny", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Relayed public photo of a hailstone estimated at half dollar sized. Time and location also estimated.", "sourceDetail": "NWS DMX — Broadcast Media via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "spc-2026-09-08-hail-41.70-2", "lat": 41.7, "lon": -93.48, "zip": "", "city": "1 NW Bondurant", "date": "2026-09-08", "county": "Polk", "source": "SPC Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.93, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "hail reported near 1 NW Bondurant", "sourceDetail": "SPC filtered reports — 2026-09-08", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-lsr-2026-09-08-hail-41.66--93.36", "lat": 41.66, "lon": -93.36, "zip": "", "city": "Mitchellville", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Picture sent in via social media.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-lsr-2026-09-08-hail-41.66--93.36", "lat": 41.66, "lon": -93.36, "zip": "", "city": "Mitchellville", "date": "2026-09-08", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Report from mPING: Ping Pong Ball (1.50 in.).", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-lsr-2026-09-08-wind-41.77--93.58", "lat": 41.77, "lon": -93.58, "zip": "", "city": "3 NNE Ankeny", "date": "2026-09-08", "county": "Polk", "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 3 NNE Ankeny", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-09-08-wind-41.76--93.57", "lat": 41.76, "lon": -93.57, "zip": "", "city": "3 NE Ankeny", "date": "2026-09-08", "county": "Polk", "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": "Ankeny RWIS site measured a 71 MPH gust.", "sourceDetail": "NWS DMX — Other Federal via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-09-08-wind-41.53--93.66", "lat": 41.53, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-09-08", "county": "Polk", "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 Des Moines Int Airport", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "asos-DSM-2026-09-08-172562", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-09-08", "county": "Polk", "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": "Des Moines (DSM) recorded a 66 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM)", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "nws-alert-f8f69fa7a7fa286f.001-Polk-wind", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "source": "NWS Weather Alert", "severity": "high", "eventType": "wind", "confidence": 88, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning for Polk. Severe Thunderstorm Warning issued September 8 at 6:55PM CDT until September 8 at 7:45PM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-335" }, { "id": "iem-ww-DMX-SV-W-335-Polk-hail-2026-09-08", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "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 DMX for Polk on 2026-09-08. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-335" }, { "id": "iem-ww-DMX-SV-W-334-Polk-wind-2026-09-08", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "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 DMX for Polk on 2026-09-08. Storm tag wind: 70 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-334" }, { "id": "iem-ww-DMX-SV-W-334-Polk-hail-2026-09-08", "zip": "", "city": "Polk", "date": "2026-09-08", "county": "Polk", "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 DMX for Polk on 2026-09-08. Storm tag hail: 1\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-334" }, { "id": "nws-alert-ae77d386898752dd.001-Polk-wind-2026-09-06", "zip": "", "city": "", "date": "2026-09-06", "county": "Polk", "source": "NWS Weather Alert", "severity": "high", "eventType": "wind", "confidence": 72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Watch for Polk. Severe Thunderstorm Watch issued September 6 at 4:45PM CDT until September 6 at 10:00PM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Watch", "evidenceLevel": "warning", "warningProductKey": "DMX-SV-A-661" }, { "id": "iem-lsr-2026-08-13-wind-41.84--93.64", "lat": 41.84, "lon": -93.64, "zip": "", "city": "2 NW Alleman", "date": "2026-08-13", "county": "Polk", "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": "Measured from personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-08-13-wind-41.74--93.76", "lat": 41.74, "lon": -93.76, "zip": "", "city": "3 SW Polk City", "date": "2026-08-13", "county": "Polk", "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": "Measured from personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "nws-alert-ac11fe26aec85923.002-Polk-wind", "zip": "", "city": "Polk", "date": "2026-08-13", "county": "Polk", "source": "NWS Weather Alert", "severity": "high", "eventType": "wind", "confidence": 88, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Warning for Polk. Severe Thunderstorm Warning issued August 13 at 7:00AM CDT until August 13 at 7:15AM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-322" }, { "id": "iem-ww-DMX-SV-W-322-Polk-hail-2026-08-13", "zip": "", "city": "Polk", "date": "2026-08-13", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-322" }, { "id": "iem-ww-DMX-SV-W-321-Polk-wind-2026-08-13", "zip": "", "city": "Polk", "date": "2026-08-13", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-321" }, { "id": "iem-ww-DMX-SV-W-321-Polk-hail-2026-08-13", "zip": "", "city": "Polk", "date": "2026-08-13", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-321" }, { "id": "nws-alert-8ef1c641b2dffd6f.001-Polk-tornado", "zip": "", "city": "Polk", "date": "2026-08-13", "county": "Polk", "source": "NWS Weather Alert", "severity": "severe", "eventType": "tornado", "confidence": 88, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "Tornado Warning for Polk (observed tornado). Tornado Warning issued August 13 at 7:12AM CDT until August 13 at 7:15AM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Tornado Warning", "evidenceLevel": "observed", "warningProductKey": "DMX-TO-W-78" }, { "id": "spc-2026-08-12-wind-41.84-160", "lat": 41.84, "lon": -93.64, "zip": "", "city": "2 NW Alleman", "date": "2026-08-12", "county": "Polk", "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 2 NW Alleman", "sourceDetail": "SPC filtered reports — 2026-08-12", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "nws-alert-9999ceb0f7822989.001-Polk-wind", "zip": "", "city": "Polk", "date": "2026-08-07", "county": "Polk", "source": "NWS Weather Alert", "severity": "high", "eventType": "wind", "confidence": 72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Severe Thunderstorm Watch for Polk. Severe Thunderstorm Watch issued August 7 at 1:41PM CDT until August 7 at 10:00PM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Watch", "evidenceLevel": "warning", "warningProductKey": "DMX-SV-A-541" }, { "id": "iem-202607210033-hail-41.78--93.59", "lat": 41.78, "lon": -93.59, "zip": "", "city": "3 SSE Alleman", "date": "2026-07-20", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 SSE Alleman, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202607210207-hail-41.57--93.75", "lat": 41.57, "lon": -93.75, "zip": "", "city": "West Des Moines", "date": "2026-07-20", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near West Des Moines, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202607210213-hail-41.59--93.84", "lat": 41.59, "lon": -93.84, "zip": "", "city": "2 SE Waukee", "date": "2026-07-20", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 SE Waukee, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-lsr-2026-07-20-wind-41.74--93.64", "lat": 41.74, "lon": -93.64, "zip": "", "city": "2 W Ankeny", "date": "2026-07-20", "county": "Polk", "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": "Measured from personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "spc-2026-07-20-55-0035", "lat": 41.69, "lon": -93.4, "zip": "", "city": "Mitchellville", "date": "2026-07-20", "county": "Polk", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "measured from personal weather station. (DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "spc-2026-07-20-56-0101", "lat": 41.38, "lon": -93.4, "zip": "", "city": "Sandyville", "date": "2026-07-20", "county": "Warren", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "(DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 61, "evidenceLevel": "reported" }, { "id": "ww-DMX-SV-W-296-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 43 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #296 (43 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-296" }, { "id": "ww-DMX-SV-W-296-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 43 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #296 (43 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-296" }, { "id": "ww-DMX-SV-W-295-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 17 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #295 (17 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-295" }, { "id": "ww-DMX-SV-W-295-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 17 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #295 (17 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-295" }, { "id": "ww-DMX-SV-W-294-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 37 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #294 (37 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-294" }, { "id": "ww-DMX-SV-W-294-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 37 min. Counties: Dallas, Madison, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #294 (37 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-294" }, { "id": "ww-DMX-SV-W-290-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 43 min. Counties: Jasper, Polk, Boone, Story. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #290 (43 min)", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-290" }, { "id": "ww-DMX-SV-W-290-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 43 min. Counties: Jasper, Polk, Boone, Story. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #290 (43 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-290" }, { "id": "ww-DMX-SV-W-291-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 49 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #291 (49 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-291" }, { "id": "ww-DMX-SV-W-291-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 49 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #291 (49 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-291" }, { "id": "ww-DMX-SV-W-292-2026-07-20-Polk-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 45 min. Counties: Jasper, Polk, Warren, Marion. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #292 (45 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-292" }, { "id": "ww-DMX-SV-W-292-2026-07-20-Polk-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-20. Duration: 45 min. Counties: Jasper, Polk, Warren, Marion. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #292 (45 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-292" }, { "id": "iem-202607210018-wind-41.74--93.64", "lat": 41.74, "lon": -93.64, "zip": "", "city": "2 W Ankeny", "date": "2026-07-20", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 2 W Ankeny, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202607210035-wind-41.69--93.40", "lat": 41.69, "lon": -93.4, "zip": "", "city": "3 NW Mitchellville", "date": "2026-07-20", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 3 NW Mitchellville, IA. Peak gust: 70 mph.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "reported" }, { "id": "iem-202607210101-wind-41.38--93.40", "lat": 41.38, "lon": -93.4, "zip": "", "city": "1 NW Sandyville", "date": "2026-07-20", "county": "Warren", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 1 NW Sandyville, IA. Peak gust: 70 mph.", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "reported" }, { "id": "iem-geo-2026-07-21T01:07:00Z-wind-41.39--93.27", "lat": 41.39, "lon": -93.27, "zip": "", "city": "Pleasantville", "date": "2026-07-20", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND DMG reported near Pleasantville, IA. Peak gust: 60 mph. Caller reports multiple trees down with a wind gust of 60 mph.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet (GeoJSON)", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-07-04-wind-41.51--93.51", "lat": 41.51, "lon": -93.51, "zip": "", "city": "1 WNW Carlisle", "date": "2026-07-04", "county": "Warren", "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": "PWS gust.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-07-04-wind-41.54--93.66", "lat": 41.54, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-07-04", "county": "Polk", "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 Des Moines Int Airport", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-264-2026-07-04-Polk-wind", "zip": "", "city": "", "date": "2026-07-04", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-04. Duration: 45 min. Counties: Warren, Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #264 (45 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-264" }, { "id": "ww-DMX-SV-W-264-2026-07-04-Polk-hail", "zip": "", "city": "", "date": "2026-07-04", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-04. Duration: 45 min. Counties: Warren, Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #264 (45 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-264" }, { "id": "ww-DMX-SV-W-263-2026-07-04-Polk-wind", "zip": "", "city": "", "date": "2026-07-04", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-04. Duration: 29 min. County: Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #263 (29 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-263" }, { "id": "ww-DMX-SV-W-263-2026-07-04-Polk-hail", "zip": "", "city": "", "date": "2026-07-04", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-04. Duration: 29 min. County: Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #263 (29 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-263" }, { "id": "asos-bf-DSM-2026-07-04", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-07-04", "county": "Polk", "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": "Des Moines (DSM) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202607040710-wind-41.51--93.51", "lat": 41.51, "lon": -93.51, "zip": "", "city": "1 WNW Carlisle", "date": "2026-07-04", "county": "Warren", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 1 WNW Carlisle, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202607040713-wind-41.54--93.66", "lat": 41.54, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-07-04", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "spc-2026-07-03-99-0710", "lat": 41.51, "lon": -93.51, "zip": "", "city": "Carlisle", "date": "2026-07-03", "county": "Warren", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "PWS gust. (DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "spc-2026-07-03-100-0713", "lat": 41.54, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-07-03", "county": "Polk", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "(DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 58, "evidenceLevel": "reported" }, { "id": "iem-202607022126-hail-41.61--93.69", "lat": 41.61, "lon": -93.69, "zip": "", "city": "1 NE Windsor Heights", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 NE Windsor Heights, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202607022127-hail-41.60--93.70", "lat": 41.6, "lon": -93.7, "zip": "", "city": "1 SE Windsor Heights", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 SE Windsor Heights, IA. Hail size: 1.25\".", "sourceDetail": "NWS DMX — CO-OP Observer via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-202607022135-hail-41.63--93.70", "lat": 41.63, "lon": -93.7, "zip": "", "city": "2 NNE Windsor Heights", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 NNE Windsor Heights, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202607022137-hail-41.64--93.70", "lat": 41.64, "lon": -93.7, "zip": "", "city": "2 E Urbandale", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 E Urbandale, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202607022140-hail-41.64--93.66", "lat": 41.64, "lon": -93.66, "zip": "", "city": "3 NE Windsor Heights", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 NE Windsor Heights, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-202607022225-hail-41.82--93.78", "lat": 41.82, "lon": -93.78, "zip": "", "city": "4 NW Polk City", "date": "2026-07-02", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 4 NW Polk City, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "ww-DMX-SV-W-253-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 25 min. Counties: Boone, Hamilton, Story, Webster, Jasper, Marshall, Polk. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #253 (25 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-253" }, { "id": "ww-DMX-SV-W-253-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 25 min. Counties: Boone, Hamilton, Story, Webster, Jasper, Marshall, Polk. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #253 (25 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-253" }, { "id": "ww-DMX-SV-W-258-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 32 min. Counties: Boone, Story, Polk. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #258 (32 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-258" }, { "id": "ww-DMX-SV-W-258-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 32 min. Counties: Boone, Story, Polk. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #258 (32 min)", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-258" }, { "id": "ww-DMX-SV-W-260-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 20 min. Counties: Jasper, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #260 (20 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-260" }, { "id": "ww-DMX-SV-W-260-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 20 min. Counties: Jasper, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #260 (20 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-260" }, { "id": "ww-DMX-SV-W-261-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 23 min. County: Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #261 (23 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-261" }, { "id": "ww-DMX-SV-W-261-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 23 min. County: Polk. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #261 (23 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-261" }, { "id": "ww-DMX-SV-W-259-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 30 min. Counties: Polk, Story. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #259 (30 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-259" }, { "id": "ww-DMX-SV-W-259-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 30 min. Counties: Polk, Story. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #259 (30 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-259" }, { "id": "ww-DMX-SV-W-257-2026-07-02-Polk-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 44 min. Counties: Polk, Story, Dallas, Boone. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #257 (44 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-257" }, { "id": "ww-DMX-SV-W-257-2026-07-02-Polk-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-07-02. Duration: 44 min. Counties: Polk, Story, Dallas, Boone. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #257 (44 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-257" }, { "id": "fema-4942-Polk", "zip": "", "city": "Polk", "date": "2026-07-01", "county": "Polk", "source": "FEMA Declaration", "severity": "moderate", "eventType": "wind", "confidence": 0.95, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Federal disaster declaration: SEVERE STORMS AND FLOODING", "sourceDetail": "FEMA DR-4942: SEVERE STORMS AND FLOODING", "evidenceLevel": "official_backfill" }, { "id": "ww-DMX-SV-W-235-2026-06-17-Polk-wind", "zip": "", "city": "", "date": "2026-06-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-06-17. Duration: 41 min. Counties: Franklin, Jasper, Marshall, Polk, Boone, Story. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #235 (41 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-235" }, { "id": "ww-DMX-SV-W-235-2026-06-17-Polk-hail", "zip": "", "city": "", "date": "2026-06-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-06-17. Duration: 41 min. Counties: Franklin, Jasper, Marshall, Polk, Boone, Story. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #235 (41 min)", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-235" }, { "id": "ww-DMX-SV-W-210-2026-06-11-Polk-wind", "zip": "", "city": "", "date": "2026-06-11", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-06-11. Duration: 20 min. Counties: Madison, Boone, Dallas, Greene, Guthrie, Polk, Decatur, Wayne. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #210 (20 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-210" }, { "id": "ww-DMX-SV-W-210-2026-06-11-Polk-hail", "zip": "", "city": "", "date": "2026-06-11", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-06-11. Duration: 20 min. Counties: Madison, Boone, Dallas, Greene, Guthrie, Polk, Decatur, Wayne. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #210 (20 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-210" }, { "id": "iem-ww-DMX-TO-W-66-Polk-tornado-2026-06-11", "zip": "", "city": "Polk", "date": "2026-06-11", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-66" }, { "id": "asos-bf-DSM-2026-06-11", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-06-11", "county": "Polk", "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": "Des Moines (DSM) recorded a 50 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-SV-W-214-Polk-wind-2026-06-11", "zip": "", "city": "Polk", "date": "2026-06-11", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-214" }, { "id": "iem-ww-DMX-SV-W-214-Polk-hail-2026-06-11", "zip": "", "city": "Polk", "date": "2026-06-11", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 1\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-214" }, { "id": "iem-ww-DMX-SV-W-218-Polk-wind-2026-06-11", "zip": "", "city": "Polk", "date": "2026-06-11", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-218" }, { "id": "iem-ww-DMX-SV-W-218-Polk-hail-2026-06-11", "zip": "", "city": "Polk", "date": "2026-06-11", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 0.88\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-218" }, { "id": "iem-ww-DMX-SV-W-205-Polk-wind-2026-06-10", "zip": "", "city": "Polk", "date": "2026-06-10", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-205" }, { "id": "iem-ww-DMX-SV-W-205-Polk-hail-2026-06-10", "zip": "", "city": "Polk", "date": "2026-06-10", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-205" }, { "id": "iem-ww-DMX-SV-W-195-Polk-wind-2026-06-06", "zip": "", "city": "Polk", "date": "2026-06-06", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-195" }, { "id": "iem-ww-DMX-SV-W-195-Polk-hail-2026-06-06", "zip": "", "city": "Polk", "date": "2026-06-06", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 1\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-195" }, { "id": "iem-ww-DMX-SV-W-194-Polk-wind-2026-06-06", "zip": "", "city": "Polk", "date": "2026-06-06", "county": "Polk", "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": "SV W for Polk. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-194" }, { "id": "iem-ww-DMX-SV-W-194-Polk-hail-2026-06-06", "zip": "", "city": "Polk", "date": "2026-06-06", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "moderate", "eventType": "hail", "confidence": 0.72, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "SV W for Polk. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-194" }, { "id": "iem-202606060302-hail-41.39--93.27", "lat": 41.39, "lon": -93.27, "zip": "", "city": "Pleasantville", "date": "2026-06-05", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Pleasantville, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Broadcast Media via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202606060356-hail-41.39--93.28", "lat": 41.39, "lon": -93.28, "zip": "", "city": "1 WSW Pleasantville", "date": "2026-06-05", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 WSW Pleasantville, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "spc-2026-06-05-397-0311", "lat": 41.37, "lon": -93.36, "zip": "", "city": "Sandyville", "date": "2026-06-05", "county": "Warren", "source": "SPC Storm Reports", "severity": "high", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Received text message from trained spotter of 63mph gust on PWS. (DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 63, "evidenceLevel": "reported" }, { "id": "iem-202606060255-hail-41.39--93.27", "lat": 41.39, "lon": -93.27, "zip": "", "city": "Pleasantville", "date": "2026-06-05", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Pleasantville, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202606060300-hail-41.39--93.27", "lat": 41.39, "lon": -93.27, "zip": "", "city": "Pleasantville", "date": "2026-06-05", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Pleasantville, IA. Hail size: 2\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2 }, { "id": "iem-202606060311-wind-41.37--93.36", "lat": 41.37, "lon": -93.36, "zip": "", "city": "2 E Sandyville", "date": "2026-06-05", "county": "Warren", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 2 E Sandyville, IA. Peak gust: 72 mph.", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "windSpeedMph": 72, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-06-05-hail-41.39--93.26", "lat": 41.39, "lon": -93.26, "zip": "", "city": "Pleasantville", "date": "2026-06-05", "county": "Marion", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Received phone call from trained spotter reporting golf ball sized hail in Pleasantville.", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "ww-DMX-SV-W-179-2026-05-18-Polk-wind", "zip": "", "city": "", "date": "2026-05-18", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-18. Duration: 52 min. Counties: Jasper, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #179 (52 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-179" }, { "id": "ww-DMX-SV-W-179-2026-05-18-Polk-hail", "zip": "", "city": "", "date": "2026-05-18", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-18. Duration: 52 min. Counties: Jasper, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #179 (52 min)", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-179" }, { "id": "ww-DMX-SV-W-178-2026-05-18-Polk-wind", "zip": "", "city": "", "date": "2026-05-18", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-18. Duration: 49 min. Counties: Warren, Jasper, Polk. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #178 (49 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-178" }, { "id": "ww-DMX-SV-W-178-2026-05-18-Polk-hail", "zip": "", "city": "", "date": "2026-05-18", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-18. Duration: 49 min. Counties: Warren, Jasper, Polk. Storm tags: wind: 60.0, hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #178 (49 min)", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-178" }, { "id": "iem-ww-DMX-TO-W-50-Polk-tornado-2026-05-18", "zip": "", "city": "Polk", "date": "2026-05-18", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-50" }, { "id": "asos-bf-DSM-2026-05-18", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-05-18", "county": "Polk", "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": "Des Moines (DSM) recorded a 57 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-175-2026-05-17-Polk-wind", "zip": "", "city": "", "date": "2026-05-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-17. Duration: 24 min. Counties: Madison, Polk, Warren, Adair, Dallas, Guthrie. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #175 (24 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-175" }, { "id": "ww-DMX-SV-W-175-2026-05-17-Polk-hail", "zip": "", "city": "", "date": "2026-05-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-05-17. Duration: 24 min. Counties: Madison, Polk, Warren, Adair, Dallas, Guthrie. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #175 (24 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-175" }, { "id": "asos-bf-DSM-2026-05-16", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-05-16", "county": "Polk", "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": "Des Moines (DSM) recorded a 53 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "asos-bf-DSM-2026-05-15", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-05-15", "county": "Polk", "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": "Des Moines (DSM) recorded a 52 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-202604240108-hail-41.69--93.61", "lat": 41.69, "lon": -93.61, "zip": "", "city": "1 NE Saylorville", "date": "2026-04-23", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 NE Saylorville, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-lsr-2026-04-23-wind-41.54--93.66", "lat": 41.54, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-04-23", "county": "Polk", "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 Des Moines Int Airport", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-geo-2026-04-24T00:33:00Z-tornado-41.89--93.66", "lat": 41.89, "lon": -93.66, "zip": "", "city": "2 ENE Slater", "date": "2026-04-23", "county": "Story", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "tornado", "confidence": 92, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TORNADO reported near 2 ENE Slater, IA. Several reports from local fire department and spotters of tornado on the ground.", "sourceDetail": "NWS DMX — Fire Dept/Rescue via Iowa Mesonet (GeoJSON)", "evidenceLevel": "reported" }, { "id": "iem-geo-2026-04-24T01:25:00Z-tornado-41.60--93.36", "lat": 41.6, "lon": -93.36, "zip": "", "city": "4 S Mitchellville", "date": "2026-04-23", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "tornado", "confidence": 92, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TORNADO reported near 4 S Mitchellville, IA. Trained spotter reports tornado on the ground.", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet (GeoJSON)", "evidenceLevel": "reported" }, { "id": "ww-DMX-SV-W-121-2026-04-23-Polk-wind", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 66 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #121 (66 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-121" }, { "id": "ww-DMX-SV-W-121-2026-04-23-Polk-hail", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 66 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #121 (66 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-121" }, { "id": "ww-DMX-SV-W-118-2026-04-23-Polk-wind", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 40 min. Counties: Boone, Dallas, Jasper, Madison, Polk, Story, Warren. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #118 (40 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-118" }, { "id": "ww-DMX-SV-W-118-2026-04-23-Polk-hail", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 40 min. Counties: Boone, Dallas, Jasper, Madison, Polk, Story, Warren. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #118 (40 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-118" }, { "id": "ww-DMX-SV-W-116-2026-04-23-Polk-wind", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 56 min. Counties: Warren, Adair, Boone, Dallas, Guthrie, Madison, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #116 (56 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-116" }, { "id": "ww-DMX-SV-W-116-2026-04-23-Polk-hail", "zip": "", "city": "", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-23. Duration: 56 min. Counties: Warren, Adair, Boone, Dallas, Guthrie, Madison, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #116 (56 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-116" }, { "id": "iem-ww-DMX-TO-W-21-Polk-tornado-2026-04-23", "zip": "", "city": "Polk", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-21" }, { "id": "iem-ww-DMX-TO-W-27-Polk-tornado-2026-04-23", "zip": "", "city": "Polk", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-27" }, { "id": "iem-ww-DMX-TO-W-24-Polk-tornado-2026-04-23", "zip": "", "city": "Polk", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-24" }, { "id": "iem-ww-DMX-TO-W-25-Polk-tornado-2026-04-23", "zip": "", "city": "Polk", "date": "2026-04-23", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "severe", "eventType": "tornado", "confidence": 0.85, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TO W for Polk.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-25" }, { "id": "asos-bf-DSM-2026-04-23", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-04-23", "county": "Polk", "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": "Des Moines (DSM) recorded a 59 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-202604240100-wind-41.54--93.66", "lat": 41.54, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2026-04-23", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 68 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-202604171858-hail-41.73--93.60", "lat": 41.73, "lon": -93.6, "zip": "", "city": "Ankeny", "date": "2026-04-17", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Ankeny, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604171901-hail-41.48--93.76", "lat": 41.48, "lon": -93.76, "zip": "", "city": "Cumming", "date": "2026-04-17", "county": "Warren", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Cumming, IA. Hail size: 1.25\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-202604171904-hail-41.65--93.60", "lat": 41.65, "lon": -93.6, "zip": "", "city": "3 SE Saylorville", "date": "2026-04-17", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 SE Saylorville, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604171905-hail-41.68--93.57", "lat": 41.68, "lon": -93.57, "zip": "", "city": "3 E Saylorville", "date": "2026-04-17", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 E Saylorville, IA. Hail size: 1.25\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-202604171911-hail-41.58--93.62", "lat": 41.58, "lon": -93.62, "zip": "", "city": "Des Moines", "date": "2026-04-17", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Des Moines, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-202604171926-hail-41.62--93.39", "lat": 41.62, "lon": -93.39, "zip": "", "city": "3 SSW Mitchellville", "date": "2026-04-17", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 SSW Mitchellville, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604171940-hail-41.71--93.24", "lat": 41.71, "lon": -93.24, "zip": "", "city": "2 N Colfax", "date": "2026-04-17", "county": "Jasper", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 N Colfax, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-202604171940-hail-41.68--93.24", "lat": 41.68, "lon": -93.24, "zip": "", "city": "Colfax", "date": "2026-04-17", "county": "Jasper", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Colfax, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-202604171941-hail-41.72--93.25", "lat": 41.72, "lon": -93.25, "zip": "", "city": "3 N Colfax", "date": "2026-04-17", "county": "Jasper", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 N Colfax, IA. Hail size: 1.25\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-202604172325-hail-41.63--93.89", "lat": 41.63, "lon": -93.89, "zip": "", "city": "2 NW Waukee", "date": "2026-04-17", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 NW Waukee, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172326-hail-41.61--93.88", "lat": 41.61, "lon": -93.88, "zip": "", "city": "1 W Waukee", "date": "2026-04-17", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 W Waukee, IA. Hail size: 0.88\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.88 }, { "id": "iem-202604172326-hail-41.62--93.85", "lat": 41.62, "lon": -93.85, "zip": "", "city": "1 NE Waukee", "date": "2026-04-17", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 NE Waukee, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "ww-DMX-SV-W-79-2026-04-17-Polk-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-17. Duration: 48 min. Counties: Jasper, Polk, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #79 (48 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-79" }, { "id": "ww-DMX-SV-W-79-2026-04-17-Polk-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-17. Duration: 48 min. Counties: Jasper, Polk, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #79 (48 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-79" }, { "id": "ww-DMX-SV-W-80-2026-04-17-Polk-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-17. Duration: 29 min. Counties: Madison, Dallas, Warren, Polk. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #80 (29 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-80" }, { "id": "ww-DMX-SV-W-80-2026-04-17-Polk-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-17. Duration: 29 min. Counties: Madison, Dallas, Warren, Polk. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #80 (29 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-80" }, { "id": "iem-202604152115-hail-41.66--93.76", "lat": 41.66, "lon": -93.76, "zip": "", "city": "2 WSW Johnston", "date": "2026-04-15", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 WSW Johnston, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604152139-hail-41.40--94.02", "lat": 41.4, "lon": -94.02, "zip": "", "city": "4 N Winterset", "date": "2026-04-15", "county": "Madison", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 4 N Winterset, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604152205-hail-41.53--93.60", "lat": 41.53, "lon": -93.6, "zip": "", "city": "3 E Des Moines Int Airp", "date": "2026-04-15", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 E Des Moines Int Airp, IA. Hail size: 0.88\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.88 }, { "id": "iem-202604160129-hail-41.88--93.82", "lat": 41.88, "lon": -93.82, "zip": "", "city": "Madrid", "date": "2026-04-15", "county": "Boone", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Madrid, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604160152-hail-41.52--94.07", "lat": 41.52, "lon": -94.07, "zip": "", "city": "3 NE Earlham", "date": "2026-04-15", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 NE Earlham, IA. Hail size: 0.75\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.75 }, { "id": "ww-DMX-SV-W-62-2026-04-15-Polk-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 13 min. Counties: Jasper, Polk. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #62 (13 min)", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-62" }, { "id": "ww-DMX-SV-W-62-2026-04-15-Polk-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 13 min. Counties: Jasper, Polk. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #62 (13 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-62" }, { "id": "ww-DMX-SV-W-52-2026-04-15-Polk-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 40 min. Counties: Jasper, Polk, Story. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #52 (40 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-52" }, { "id": "ww-DMX-SV-W-52-2026-04-15-Polk-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 40 min. Counties: Jasper, Polk, Story. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #52 (40 min)", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "DMX-SV-W-52" }, { "id": "ww-DMX-SV-W-74-2026-04-15-Polk-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 59 min. Counties: Boone, Dallas, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #74 (59 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-74" }, { "id": "ww-DMX-SV-W-74-2026-04-15-Polk-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-15. Duration: 59 min. Counties: Boone, Dallas, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #74 (59 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-74" }, { "id": "asos-bf-DSM-2026-04-08", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-04-08", "county": "Polk", "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": "Des Moines (DSM) recorded a 52 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-15-2026-04-02-Polk-wind", "zip": "", "city": "", "date": "2026-04-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-02. Duration: 41 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #15 (41 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-15" }, { "id": "ww-DMX-SV-W-15-2026-04-02-Polk-hail", "zip": "", "city": "", "date": "2026-04-02", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-04-02. Duration: 41 min. Counties: Jasper, Marion, Polk, Warren. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #15 (41 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-15" }, { "id": "iem-202603310249-hail-41.73--94.03", "lat": 41.73, "lon": -94.03, "zip": "", "city": "2 S Minburn", "date": "2026-03-30", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 S Minburn, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202603310312-hail-41.68--93.75", "lat": 41.68, "lon": -93.75, "zip": "", "city": "1 WNW Johnston", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 WNW Johnston, IA. Hail size: 0.75\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.75 }, { "id": "iem-202603310316-hail-41.74--93.64", "lat": 41.74, "lon": -93.64, "zip": "", "city": "2 W Ankeny", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 W Ankeny, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202603310317-hail-41.73--93.60", "lat": 41.73, "lon": -93.6, "zip": "", "city": "Ankeny", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Ankeny, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Amateur Radio via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202603310320-hail-41.77--93.58", "lat": 41.77, "lon": -93.58, "zip": "", "city": "3 NNE Ankeny", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 NNE Ankeny, IA. Hail size: 0.75\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.75 }, { "id": "iem-202603310334-hail-41.61--93.86", "lat": 41.61, "lon": -93.86, "zip": "", "city": "Waukee", "date": "2026-03-30", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Waukee, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202603310334-hail-41.61--93.88", "lat": 41.61, "lon": -93.88, "zip": "", "city": "1 W Waukee", "date": "2026-03-30", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 W Waukee, IA. Hail size: 1.25\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.25 }, { "id": "iem-202603310335-hail-41.59--93.85", "lat": 41.59, "lon": -93.85, "zip": "", "city": "1 SSE Waukee", "date": "2026-03-30", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 1 SSE Waukee, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202603310345-hail-41.63--93.70", "lat": 41.63, "lon": -93.7, "zip": "", "city": "2 NNE Windsor Heights", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 NNE Windsor Heights, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "ww-DMX-SV-W-9-2026-03-30-Polk-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 39 min. Counties: Polk, Dallas. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #9 (39 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-9" }, { "id": "ww-DMX-SV-W-9-2026-03-30-Polk-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 39 min. Counties: Polk, Dallas. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #9 (39 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-9" }, { "id": "ww-DMX-SV-W-8-2026-03-30-Polk-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 67 min. Counties: Jasper, Boone, Dallas, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #8 (67 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-8" }, { "id": "ww-DMX-SV-W-8-2026-03-30-Polk-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 67 min. Counties: Jasper, Boone, Dallas, Marshall, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #8 (67 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-8" }, { "id": "ww-DMX-SV-W-10-2026-03-30-Polk-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 42 min. Counties: Jasper, Tama, Marshall, Polk, Poweshiek, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #10 (42 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-10" }, { "id": "ww-DMX-SV-W-10-2026-03-30-Polk-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 42 min. Counties: Jasper, Tama, Marshall, Polk, Poweshiek, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #10 (42 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-10" }, { "id": "ww-DMX-SV-W-5-2026-03-30-Polk-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 27 min. Counties: Dallas, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #5 (27 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-5" }, { "id": "ww-DMX-SV-W-5-2026-03-30-Polk-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 27 min. Counties: Dallas, Polk, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #5 (27 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-5" }, { "id": "ww-DMX-SV-W-7-2026-03-30-Polk-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 49 min. Counties: Dallas, Guthrie, Polk, Greene, Boone. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #7 (49 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-7" }, { "id": "ww-DMX-SV-W-7-2026-03-30-Polk-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-30. Duration: 49 min. Counties: Dallas, Guthrie, Polk, Greene, Boone. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #7 (49 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-7" }, { "id": "iem-202603310315-hail-41.74--93.64", "lat": 41.74, "lon": -93.64, "zip": "", "city": "2 WNW Ankeny", "date": "2026-03-30", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 WNW Ankeny, IA. Hail size: 0.88\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.88 }, { "id": "asos-bf-DSM-2026-03-16", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-03-16", "county": "Polk", "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": "Des Moines (DSM) recorded a 56 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-15-wind-41.68--93.57", "lat": 41.68, "lon": -93.57, "zip": "", "city": "3 E Saylorville", "date": "2026-03-15", "county": "Polk", "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": "Peak wind at AWOS station KIKV Ankeny Airport.", "sourceDetail": "NWS DMX — AWOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-15-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-03-15", "county": "Polk", "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": "Peak wind gust at ASOS station KDSM Des Moines International Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "asos-bf-IKV-2026-03-15", "lat": 41.6878, "lon": -93.5695, "zip": "", "city": "ANKENY", "date": "2026-03-15", "county": "Polk", "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": "ANKENY (IKV) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — ANKENY (IKV) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202603160235-wind-41.68--93.57", "lat": 41.68, "lon": -93.57, "zip": "", "city": "3 E Saylorville", "date": "2026-03-15", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 3 E Saylorville, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — AWOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202603160456-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-03-15", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 69 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-3-Polk-wind-2026-03-15", "zip": "", "city": "Polk", "date": "2026-03-15", "county": "Polk", "source": "IEM High Wind Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "HW W for Polk.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-3" }, { "id": "asos-bf-DSM-2026-03-13", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-03-13", "county": "Polk", "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": "Des Moines (DSM) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-IKV-2026-03-13", "lat": 41.6878, "lon": -93.5695, "zip": "", "city": "ANKENY", "date": "2026-03-13", "county": "Polk", "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": "ANKENY (IKV) recorded a 52 mph gust.", "sourceDetail": "IA_ASOS automated observation — ANKENY (IKV) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-2-Polk-wind-2026-03-13", "zip": "", "city": "Polk", "date": "2026-03-13", "county": "Polk", "source": "IEM High Wind Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "HW W for Polk.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-2" }, { "id": "iem-202603070136-hail-41.69--93.99", "lat": 41.69, "lon": -93.99, "zip": "", "city": "2 W Dallas Center", "date": "2026-03-06", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "moderate", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 2 W Dallas Center, IA. Hail size: 0.75\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 0.75 }, { "id": "ww-DMX-SV-W-2-2026-03-06-Polk-wind", "zip": "", "city": "", "date": "2026-03-06", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-06. Duration: 29 min. Counties: Boone, Dallas, Polk. Storm tags: wind: 50.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #2 (29 min)", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-2" }, { "id": "ww-DMX-SV-W-2-2026-03-06-Polk-hail", "zip": "", "city": "", "date": "2026-03-06", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2026-03-06. Duration: 29 min. Counties: Boone, Dallas, Polk. Storm tags: wind: 50.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #2 (29 min)", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "DMX-SV-W-2" }, { "id": "iem-lsr-2026-01-21-wind-41.86--93.90", "lat": 41.86, "lon": -93.9, "zip": "", "city": "1 ENE Woodward", "date": "2026-01-21", "county": "Dallas", "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": "Measured from personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-21-wind-41.79--93.53", "lat": 41.79, "lon": -93.53, "zip": "", "city": "1 W Elkhart", "date": "2026-01-21", "county": "Polk", "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 UP752 0.6 W Elkhart (UPR).", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-21-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-01-21", "county": "Polk", "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 KDSM Des Moines International Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 64, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-21-wind-41.82--93.80", "lat": 41.82, "lon": -93.8, "zip": "", "city": "4 SSE Madrid", "date": "2026-01-21", "county": "Polk", "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": "Measured from personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "asos-bf-DSM-2026-01-21", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2026-01-21", "county": "Polk", "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": "Des Moines (DSM) recorded a 65 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-202601212107-wind-41.86--93.90", "lat": 41.86, "lon": -93.9, "zip": "", "city": "1 ENE Woodward", "date": "2026-01-21", "county": "Dallas", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 1 ENE Woodward, IA. Peak gust: 74 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 74, "evidenceLevel": "observed" }, { "id": "iem-202601212121-wind-41.79--93.53", "lat": 41.79, "lon": -93.53, "zip": "", "city": "1 W Elkhart", "date": "2026-01-21", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 1 W Elkhart, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202601212128-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-01-21", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202601212128-wind-41.82--93.80", "lat": 41.82, "lon": -93.8, "zip": "", "city": "4 SSE Madrid", "date": "2026-01-21", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 4 SSE Madrid, IA. Peak gust: 75 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 75, "evidenceLevel": "observed" }, { "id": "iem-202601212159-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-01-21", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 74 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 74, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-1-Polk-wind-2026-01-21", "zip": "", "city": "Polk", "date": "2026-01-21", "county": "Polk", "source": "IEM High Wind Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "HW W for Polk.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-1" }, { "id": "iem-lsr-2026-01-21-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2026-01-21", "county": "Polk", "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 KDSM Des Moines International Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-IKV-2025-12-28", "lat": 41.6878, "lon": -93.5695, "zip": "", "city": "ANKENY", "date": "2025-12-28", "county": "Polk", "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": "ANKENY (IKV) recorded a 56 mph gust.", "sourceDetail": "IA_ASOS automated observation — ANKENY (IKV) [365d backfill 2026-08]", "windSpeedMph": 56, "evidenceLevel": "observed" }, { "id": "asos-bf-DSM-2025-12-18", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2025-12-18", "county": "Polk", "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": "Des Moines (DSM) recorded a 54 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-10-wind-41.53--93.66", "lat": 41.53, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2025-12-10", "county": "Polk", "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": "KDSM 45 gust 66 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-10-wind-41.38--93.40", "lat": 41.38, "lon": -93.4, "zip": "", "city": "1 NW Sandyville", "date": "2025-12-10", "county": "Warren", "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": "measured on home weather station.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "reported" }, { "id": "iem-lsr-2025-12-10-wind-41.57--93.26", "lat": 41.57, "lon": -93.26, "zip": "", "city": "3 SSW Prairie City", "date": "2025-12-10", "county": "Jasper", "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": "Neal Smith RAWS.", "sourceDetail": "NWS DMX — Park/Forest Srvc via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "asos-bf-DSM-2025-12-10", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2025-12-10", "county": "Polk", "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": "Des Moines (DSM) recorded a 65 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "asos-bf-IKV-2025-12-10", "lat": 41.6878, "lon": -93.5695, "zip": "", "city": "ANKENY", "date": "2025-12-10", "county": "Polk", "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": "ANKENY (IKV) recorded a 51 mph gust.", "sourceDetail": "IA_ASOS automated observation — ANKENY (IKV) [365d backfill 2026-08]", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "iem-202512101011-wind-41.53--93.66", "lat": 41.53, "lon": -93.66, "zip": "", "city": "Des Moines Int Airport", "date": "2025-12-10", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 76 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 76, "evidenceLevel": "observed" }, { "id": "iem-202512101030-wind-41.38--93.40", "lat": 41.38, "lon": -93.4, "zip": "", "city": "1 NW Sandyville", "date": "2025-12-10", "county": "Warren", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 1 NW Sandyville, IA. Peak gust: 76 mph.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "windSpeedMph": 76, "evidenceLevel": "reported" }, { "id": "iem-202512101031-wind-41.57--93.26", "lat": 41.57, "lon": -93.26, "zip": "", "city": "3 SSW Prairie City", "date": "2025-12-10", "county": "Jasper", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 3 SSW Prairie City, IA. Peak gust: 69 mph.", "sourceDetail": "NWS DMX — Park/Forest Srvc via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "reported" }, { "id": "iem-ww-DMX-HW-W-6-Polk-wind-2025-12-10", "zip": "", "city": "Polk", "date": "2025-12-10", "county": "Polk", "source": "IEM High Wind Archive", "severity": "high", "eventType": "wind", "confidence": 0.72, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "HW W for Polk.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-6" }, { "id": "asos-bf-DSM-2025-12-09", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2025-12-09", "county": "Polk", "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": "Des Moines (DSM) recorded a 57 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "asos-bf-DSM-2025-11-26", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2025-11-26", "county": "Polk", "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": "Des Moines (DSM) recorded a 57 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 57, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-11-25-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2025-11-25", "county": "Polk", "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 KDSM Des Moines International Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "asos-bf-IKV-2025-11-25", "lat": 41.6878, "lon": -93.5695, "zip": "", "city": "ANKENY", "date": "2025-11-25", "county": "Polk", "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": "ANKENY (IKV) recorded a 52 mph gust.", "sourceDetail": "IA_ASOS automated observation — ANKENY (IKV) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "asos-bf-DSM-2025-11-25", "lat": 41.534, "lon": -93.6531, "zip": "", "city": "Des Moines", "date": "2025-11-25", "county": "Polk", "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": "Des Moines (DSM) recorded a 60 mph gust.", "sourceDetail": "IA_ASOS automated observation — Des Moines (DSM) [365d backfill 2026-08]", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-202511260231-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2025-11-25", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-202511260448-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2025-11-25", "county": "Polk", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near Des Moines Int Airport, IA. Peak gust: 70 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-11-25-wind-41.53--93.67", "lat": 41.53, "lon": -93.67, "zip": "", "city": "Des Moines Int Airport", "date": "2025-11-25", "county": "Polk", "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 KDSM Des Moines International Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-250-2025-09-22-Polk-wind", "zip": "", "city": "", "date": "2025-09-22", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "wind", "confidence": 70, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Hurricane wind damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2025-09-22. Duration: 38 min. Counties: Hamilton, Webster, Wright, Polk, Jasper. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #250 (38 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-250" }, { "id": "ww-DMX-SV-W-250-2025-09-22-Polk-hail", "zip": "", "city": "", "date": "2025-09-22", "county": "Polk", "source": "IEM Watch/Warn Archive", "severity": "high", "eventType": "hail", "confidence": 70, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Severe Thunderstorm Warning issued by NWS DMX on 2025-09-22. Duration: 38 min. Counties: Hamilton, Webster, Wright, Polk, Jasper. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #250 (38 min)", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "DMX-SV-W-250" } ] }