{ "dataset": "Marshalltown, IA storm events — 12-month window, 25-mile radius plus Marshall 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": 186, "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": "nws-alert-ef7cd8aafaba52b4.001-Marshall-wind", "zip": "", "city": "Marshall", "date": "2026-09-08", "county": "Marshall", "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 Marshall. 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-Marshall-hail-2026-09-08", "zip": "", "city": "Marshall", "date": "2026-09-08", "county": "Marshall", "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 Marshall 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": "iem-ww-DMX-SV-W-322-Marshall-wind-2026-08-13", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "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 Marshall. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-322" }, { "id": "iem-ww-DMX-SV-W-322-Marshall-hail-2026-08-13", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "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 Marshall. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-322" }, { "id": "nws-alert-fe6c8df4d2d72e38.002-Marshall-wind", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "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 Marshall. Severe Thunderstorm Warning issued August 13 at 7:31AM CDT until August 13 at 8:00AM CDT by NWS Des Moines IA", "sourceDetail": "NWS Des Moines IA — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-323" }, { "id": "iem-ww-DMX-SV-W-323-Marshall-hail-2026-08-13", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "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 Marshall. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-323" }, { "id": "nws-alert-8ef1c641b2dffd6f.001-Marshall-tornado", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "source": "NWS Weather Alert", "severity": "severe", "eventType": "tornado", "confidence": 88, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "Tornado Warning for Marshall (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": "iem-ww-DMX-TO-W-77-Marshall-tornado-2026-08-13", "zip": "", "city": "Marshall", "date": "2026-08-13", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-77" }, { "id": "nws-alert-9999ceb0f7822989.001-Marshall-wind", "zip": "", "city": "Marshall", "date": "2026-08-07", "county": "Marshall", "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 Marshall. 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": "spc-2026-07-20-37-2127", "lat": 42.26, "lon": -92.56, "zip": "", "city": "Reinbeck", "date": "2026-07-20", "county": "Tama", "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": 62, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-07-20-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-07-20", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 4 E Albion", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-280-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 60 min. Counties: Jasper, Tama, Marshall, Poweshiek. Storm tags: wind: 60.0, hail: 0.88\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #280 (60 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-280" }, { "id": "ww-DMX-SV-W-280-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 60 min. Counties: Jasper, Tama, Marshall, Poweshiek. Storm tags: wind: 60.0, hail: 0.88\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #280 (60 min)", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-280" }, { "id": "ww-DMX-SV-W-287-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 48 min. Counties: Jasper, Marshall, Story. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #287 (48 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-287" }, { "id": "ww-DMX-SV-W-287-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 48 min. Counties: Jasper, Marshall, Story. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #287 (48 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-287" }, { "id": "ww-DMX-SV-W-286-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 51 min. Counties: Hardin, Boone, Hamilton, Marshall, Story. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #286 (51 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-286" }, { "id": "ww-DMX-SV-W-286-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 51 min. Counties: Hardin, Boone, Hamilton, Marshall, Story. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #286 (51 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-286" }, { "id": "ww-DMX-SV-W-284-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 57 min. Counties: Jasper, Marshall, Tama, Poweshiek. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #284 (57 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-284" }, { "id": "ww-DMX-SV-W-284-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 57 min. Counties: Jasper, Marshall, Tama, Poweshiek. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #284 (57 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-284" }, { "id": "ww-DMX-SV-W-282-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 47 min. Counties: Marshall, Story. Storm tags: wind: 60.0, hail: 2.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #282 (47 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-282" }, { "id": "ww-DMX-SV-W-282-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 47 min. Counties: Marshall, Story. Storm tags: wind: 60.0, hail: 2.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #282 (47 min)", "evidenceLevel": "warning", "hailSizeInches": 2.75, "warningProductKey": "DMX-SV-W-282" }, { "id": "ww-DMX-SV-W-277-2026-07-20-Marshall-wind", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 64 min. Counties: Hardin, Marshall, Tama, Black Hawk, Grundy. Storm tags: wind: 70.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #277 (64 min)", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-277" }, { "id": "ww-DMX-SV-W-277-2026-07-20-Marshall-hail", "zip": "", "city": "", "date": "2026-07-20", "county": "Marshall", "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: 64 min. Counties: Hardin, Marshall, Tama, Black Hawk, Grundy. Storm tags: wind: 70.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #277 (64 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-277" }, { "id": "asos-bf-MIW-2026-07-20", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-07-20", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 62 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "iem-202607202127-wind-42.26--92.56", "lat": 42.26, "lon": -92.56, "zip": "", "city": "5 SSE Reinbeck", "date": "2026-07-20", "county": "Tama", "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 5 SSE Reinbeck, IA. Peak gust: 71 mph.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "windSpeedMph": 71, "evidenceLevel": "reported" }, { "id": "iem-202607202222-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-07-20", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 70 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-253-2026-07-02-Marshall-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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-260-2026-07-02-Marshall-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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-252-2026-07-02-Marshall-wind", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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: 45 min. Counties: Story, Hamilton, Hardin, Boone, Marshall, Webster, Wright. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #252 (45 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-252" }, { "id": "ww-DMX-SV-W-252-2026-07-02-Marshall-hail", "zip": "", "city": "", "date": "2026-07-02", "county": "Marshall", "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: 45 min. Counties: Story, Hamilton, Hardin, Boone, Marshall, Webster, Wright. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #252 (45 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-252" }, { "id": "iem-lsr-2026-06-17-wind-42.24--93.30", "lat": 42.24, "lon": -93.3, "zip": "", "city": "5 S Hubbard", "date": "2026-06-17", "county": "Hardin", "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": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-17-wind-42.17--93.21", "lat": 42.17, "lon": -93.21, "zip": "", "city": "3 NNW Saint Anthony", "date": "2026-06-17", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "PWS gust.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 75, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-17-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-17", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "TSTM WND GST reported near 4 E Albion", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 94, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-17-wind-42.22--92.87", "lat": 42.22, "lon": -92.87, "zip": "", "city": "Conrad", "date": "2026-06-17", "county": "Grundy", "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 Conrad", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-06-17-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-17", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Delayed and updated report. Upon further evaluation of 1-min ASOS data_ the peak wind gust at the Marshalltown ASOS was upgraded to 107 mph (93 kts). This was initially not disseminated due to a comm", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 107, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-17-wind-41.88--92.62", "lat": 41.88, "lon": -92.62, "zip": "", "city": "6 SSW Tama", "date": "2026-06-17", "county": "Tama", "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": 60, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-237-2026-06-17-Marshall-wind", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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: 56 min. Counties: Bremer, Marshall, Poweshiek, Tama. Storm tags: wind: 90.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #237 (56 min)", "windSpeedMph": 90, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-237" }, { "id": "ww-DMX-SV-W-237-2026-06-17-Marshall-hail", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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: 56 min. Counties: Bremer, Marshall, Poweshiek, Tama. Storm tags: wind: 90.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #237 (56 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-237" }, { "id": "ww-DMX-SV-W-235-2026-06-17-Marshall-wind", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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-236-2026-06-17-Marshall-wind", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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: 47 min. Counties: Sac, Calhoun, Pocahontas, Marshall, Tama, Grundy. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #236 (47 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-236" }, { "id": "ww-DMX-SV-W-236-2026-06-17-Marshall-hail", "zip": "", "city": "", "date": "2026-06-17", "county": "Marshall", "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: 47 min. Counties: Sac, Calhoun, Pocahontas, Marshall, Tama, Grundy. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #236 (47 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-236" }, { "id": "iem-202606171022-wind-42.24--93.30", "lat": 42.24, "lon": -93.3, "zip": "", "city": "5 S Hubbard", "date": "2026-06-17", "county": "Hardin", "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 5 S Hubbard, IA. Peak gust: 68 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-202606171028-wind-42.17--93.21", "lat": 42.17, "lon": -93.21, "zip": "", "city": "3 NNW Saint Anthony", "date": "2026-06-17", "county": "Marshall", "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": "TSTM WND GST reported near 3 NNW Saint Anthony, IA. Peak gust: 86 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 86, "evidenceLevel": "observed" }, { "id": "iem-202606171045-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-17", "county": "Marshall", "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": "TSTM WND GST reported near 4 E Albion, IA. Peak gust: 108 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 108, "evidenceLevel": "observed" }, { "id": "iem-202606171047-wind-42.22--92.87", "lat": 42.22, "lon": -92.87, "zip": "", "city": "Conrad", "date": "2026-06-17", "county": "Grundy", "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 Conrad, IA. Peak gust: 69 mph.", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "reported" }, { "id": "iem-202606171048-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-17", "county": "Marshall", "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": "TSTM WND GST reported near 4 E Albion, IA. Peak gust: 123 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 123, "evidenceLevel": "observed" }, { "id": "iem-202606171111-wind-41.88--92.62", "lat": 41.88, "lon": -92.62, "zip": "", "city": "6 SSW Tama", "date": "2026-06-17", "county": "Tama", "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 6 SSW Tama, IA. Peak gust: 69 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-SV-W-234-Marshall-wind-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. 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-234" }, { "id": "iem-ww-DMX-SV-W-234-Marshall-hail-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. Storm tag hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-234" }, { "id": "iem-ww-DMX-SV-W-232-Marshall-wind-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. 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-232" }, { "id": "iem-ww-DMX-SV-W-232-Marshall-hail-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. 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-232" }, { "id": "iem-ww-DMX-SV-W-238-Marshall-wind-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. Storm tag wind: 60 mph. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-238" }, { "id": "iem-ww-DMX-SV-W-238-Marshall-hail-2026-06-17", "zip": "", "city": "Marshall", "date": "2026-06-17", "county": "Marshall", "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 Marshall on 2026-06-17. 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-238" }, { "id": "spc-2026-06-16-217-1022", "lat": 42.24, "lon": -93.3, "zip": "", "city": "Hubbard", "date": "2026-06-16", "county": "Hardin", "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": 59, "evidenceLevel": "reported" }, { "id": "spc-2026-06-16-218-1028", "lat": 42.17, "lon": -93.21, "zip": "", "city": "Saint Anthony", "date": "2026-06-16", "county": "Marshall", "source": "SPC Storm Reports", "severity": "severe", "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": 75, "evidenceLevel": "reported" }, { "id": "spc-2026-06-16-223-1045", "lat": 42.11, "lon": -92.92, "zip": "", "city": "Albion", "date": "2026-06-16", "county": "Marshall", "source": "SPC Storm Reports", "severity": "severe", "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": 94, "evidenceLevel": "reported" }, { "id": "spc-2026-06-16-225-1047", "lat": 42.22, "lon": -92.87, "zip": "", "city": "Conrad", "date": "2026-06-16", "county": "Grundy", "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": 60, "evidenceLevel": "reported" }, { "id": "spc-2026-06-16-227-1048", "lat": 42.12, "lon": -92.92, "zip": "", "city": "Albion", "date": "2026-06-16", "county": "Marshall", "source": "SPC Storm Reports", "severity": "severe", "eventType": "wind", "confidence": 90, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "Delayed and updated report. Upon further evaluation of 1-min ASOS data... the peak wind gust at the Marshalltown ASOS was upgraded to 107 mph (93 kts). This was initial (DMX)", "sourceDetail": "Storm Prediction Center verified report", "windSpeedMph": 107, "evidenceLevel": "reported" }, { "id": "spc-2026-06-16-230-1111", "lat": 41.88, "lon": -92.62, "zip": "", "city": "Tama", "date": "2026-06-16", "county": "Tama", "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": 60, "evidenceLevel": "reported" }, { "id": "iem-lsr-2026-06-11-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-11", "county": "Marshall", "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": "Delayed report - measured from KMIW.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 66, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-217-2026-06-11-Marshall-wind", "zip": "", "city": "", "date": "2026-06-11", "county": "Marshall", "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: 52 min. Counties: Hamilton, Hardin, Marshall, Story, Butler, Franklin, Wright, Grundy, Lucas, Mahaska, Marion, Monroe, Wapello, Warren. Storm tags: wind: 70.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #217 (52 min)", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-217" }, { "id": "ww-DMX-SV-W-217-2026-06-11-Marshall-hail", "zip": "", "city": "", "date": "2026-06-11", "county": "Marshall", "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: 52 min. Counties: Hamilton, Hardin, Marshall, Story, Butler, Franklin, Wright, Grundy, Lucas, Mahaska, Marion, Monroe, Wapello, Warren. Storm tags: wind: 70.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #217 (52 min)", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "DMX-SV-W-217" }, { "id": "ww-DMX-SV-W-219-2026-06-11-Marshall-wind", "zip": "", "city": "", "date": "2026-06-11", "county": "Marshall", "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: 56 min. Counties: Grundy, Marshall, Poweshiek, Tama, Black Hawk, Appanoose, Davis, Decatur, Lucas, Monroe, Ringgold, Wapello, Wayne. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #219 (56 min)", "windSpeedMph": 70, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-219" }, { "id": "ww-DMX-SV-W-219-2026-06-11-Marshall-hail", "zip": "", "city": "", "date": "2026-06-11", "county": "Marshall", "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: 56 min. Counties: Grundy, Marshall, Poweshiek, Tama, Black Hawk, Appanoose, Davis, Decatur, Lucas, Monroe, Ringgold, Wapello, Wayne. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #219 (56 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-219" }, { "id": "asos-bf-MIW-2026-06-11", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-06-11", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 65 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "iem-202606111342-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-11", "county": "Marshall", "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": "TSTM WND GST reported near 4 E Albion, IA. Peak gust: 76 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 76, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-SV-W-218-Marshall-wind-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall. 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-Marshall-hail-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall. 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-220-Marshall-wind-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall on 2026-06-11. 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-220" }, { "id": "iem-ww-DMX-SV-W-220-Marshall-hail-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall on 2026-06-11. Storm tag hail: 0.88\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning", "evidenceLevel": "warning", "hailSizeInches": 0.88, "warningProductKey": "DMX-SV-W-220" }, { "id": "iem-ww-DMX-SV-W-222-Marshall-wind-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall on 2026-06-11. 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-222" }, { "id": "iem-ww-DMX-SV-W-222-Marshall-hail-2026-06-11", "zip": "", "city": "Marshall", "date": "2026-06-11", "county": "Marshall", "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 Marshall on 2026-06-11. 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-222" }, { "id": "iem-lsr-2026-06-10-wind-42.15--93.13", "lat": 42.15, "lon": -93.13, "zip": "", "city": "3 NE Clemons", "date": "2026-06-10", "county": "Marshall", "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": "Delayed report. Peak wind gust from a personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 60, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-10-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-10", "county": "Marshall", "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": "Delayed report_ peak wind gust from the KMIW Marshalltown Airport ASOS.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-06-10-wind-42.29--93.16", "lat": 42.29, "lon": -93.16, "zip": "", "city": "1 NE New Providence", "date": "2026-06-10", "county": "Hardin", "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": "Delayed report. Peak wind gust from a personal weather station.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 65, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2026-06-10", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-06-10", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202606101550-wind-42.15--93.13", "lat": 42.15, "lon": -93.13, "zip": "", "city": "3 NE Clemons", "date": "2026-06-10", "county": "Marshall", "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 NE Clemons, IA. Peak gust: 69 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 69, "evidenceLevel": "observed" }, { "id": "iem-202606101557-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-06-10", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 68 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-202606101601-wind-42.29--93.16", "lat": 42.29, "lon": -93.16, "zip": "", "city": "1 NE New Providence", "date": "2026-06-10", "county": "Hardin", "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": "TSTM WND GST reported near 1 NE New Providence, IA. Peak gust: 75 mph.", "sourceDetail": "NWS DMX — Mesonet via Iowa Mesonet", "windSpeedMph": 75, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-SV-W-196-Marshall-wind-2026-06-10", "zip": "", "city": "Marshall", "date": "2026-06-10", "county": "Marshall", "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 Marshall. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-196" }, { "id": "iem-ww-DMX-SV-W-196-Marshall-hail-2026-06-10", "zip": "", "city": "Marshall", "date": "2026-06-10", "county": "Marshall", "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 Marshall. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-196" }, { "id": "iem-ww-DMX-SV-W-197-Marshall-wind-2026-06-10", "zip": "", "city": "Marshall", "date": "2026-06-10", "county": "Marshall", "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 Marshall. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-197" }, { "id": "iem-ww-DMX-SV-W-197-Marshall-hail-2026-06-10", "zip": "", "city": "Marshall", "date": "2026-06-10", "county": "Marshall", "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 Marshall. Max hail tag: 0.75\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-197" }, { "id": "iem-ww-DMX-SV-W-189-Marshall-wind-2026-06-05", "zip": "", "city": "Marshall", "date": "2026-06-05", "county": "Marshall", "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 Marshall. Max wind tag: 60 mph.", "sourceDetail": "NWS DMX — SV/W", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-189" }, { "id": "iem-ww-DMX-SV-W-189-Marshall-hail-2026-06-05", "zip": "", "city": "Marshall", "date": "2026-06-05", "county": "Marshall", "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 Marshall. Max hail tag: 1\".", "sourceDetail": "NWS DMX — SV/W", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-189" }, { "id": "ww-DMX-SV-W-179-2026-05-18-Marshall-wind", "zip": "", "city": "", "date": "2026-05-18", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-05-18", "county": "Marshall", "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": "iem-ww-DMX-TO-W-51-Marshall-tornado-2026-05-18", "zip": "", "city": "Marshall", "date": "2026-05-18", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-51" }, { "id": "ww-DMX-SV-W-119-2026-04-23-Marshall-wind", "zip": "", "city": "", "date": "2026-04-23", "county": "Marshall", "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: 50 min. Counties: Grundy, Boone, Hamilton, Story, Hardin, Marshall. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #119 (50 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-119" }, { "id": "ww-DMX-SV-W-119-2026-04-23-Marshall-hail", "zip": "", "city": "", "date": "2026-04-23", "county": "Marshall", "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: 50 min. Counties: Grundy, Boone, Hamilton, Story, Hardin, Marshall. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #119 (50 min)", "evidenceLevel": "warning", "hailSizeInches": 0.75, "warningProductKey": "DMX-SV-W-119" }, { "id": "iem-ww-DMX-TO-W-25-Marshall-tornado-2026-04-23", "zip": "", "city": "Marshall", "date": "2026-04-23", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-25" }, { "id": "iem-202604171921-hail-41.90--93.31", "lat": 41.9, "lon": -93.31, "zip": "", "city": "Collins", "date": "2026-04-17", "county": "Story", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Collins, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604171939-hail-41.94--93.10", "lat": 41.94, "lon": -93.1, "zip": "", "city": "Melbourne", "date": "2026-04-17", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Melbourne, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604171950-hail-41.70--93.06", "lat": 41.7, "lon": -93.06, "zip": "", "city": "1 ESE Lambs Grove", "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 1 ESE Lambs Grove, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604171950-hail-41.88--92.92", "lat": 41.88, "lon": -92.92, "zip": "", "city": "Laurel", "date": "2026-04-17", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Laurel, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604171950-hail-41.75--93.06", "lat": 41.75, "lon": -93.06, "zip": "", "city": "4 NNE Lambs Grove", "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 4 NNE Lambs Grove, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604172000-hail-41.92--92.96", "lat": 41.92, "lon": -92.96, "zip": "", "city": "1 S Haverhill", "date": "2026-04-17", "county": "Marshall", "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 S Haverhill, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172004-hail-41.95--92.58", "lat": 41.95, "lon": -92.58, "zip": "", "city": "1 S Tama", "date": "2026-04-17", "county": "Tama", "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 S Tama, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172005-hail-41.96--92.58", "lat": 41.96, "lon": -92.58, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Tama, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604172015-hail-41.96--92.57", "lat": 41.96, "lon": -92.57, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Tama, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172010-hail-41.75--92.79", "lat": 41.75, "lon": -92.79, "zip": "", "city": "3 NE Oakland Acres", "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 NE Oakland Acres, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172016-hail-41.99--92.58", "lat": 41.99, "lon": -92.58, "zip": "", "city": "Toledo", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Toledo, IA. Hail size: 2\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2 }, { "id": "iem-202604172025-hail-41.74--92.72", "lat": 41.74, "lon": -92.72, "zip": "", "city": "Grinnell", "date": "2026-04-17", "county": "Poweshiek", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Grinnell, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "ww-DMX-SV-W-79-2026-04-17-Marshall-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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-85-2026-04-17-Marshall-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 31 min. Counties: Jasper, Marshall, Poweshiek. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #85 (31 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-85" }, { "id": "ww-DMX-SV-W-85-2026-04-17-Marshall-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 31 min. Counties: Jasper, Marshall, Poweshiek. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #85 (31 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-85" }, { "id": "ww-DMX-SV-W-89-2026-04-17-Marshall-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 38 min. Counties: Tama, Marshall. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #89 (38 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-89" }, { "id": "ww-DMX-SV-W-89-2026-04-17-Marshall-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 38 min. Counties: Tama, Marshall. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #89 (38 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-89" }, { "id": "ww-DMX-SV-W-83-2026-04-17-Marshall-wind", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 46 min. Counties: Tama, Story, Marshall, Poweshiek, Jasper. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #83 (46 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-83" }, { "id": "ww-DMX-SV-W-83-2026-04-17-Marshall-hail", "zip": "", "city": "", "date": "2026-04-17", "county": "Marshall", "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: 46 min. Counties: Tama, Story, Marshall, Poweshiek, Jasper. Storm tags: wind: 60.0, hail: 1.25\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #83 (46 min)", "evidenceLevel": "warning", "hailSizeInches": 1.25, "warningProductKey": "DMX-SV-W-83" }, { "id": "iem-ww-DMX-TO-W-10-Marshall-tornado-2026-04-17", "zip": "", "city": "Marshall", "date": "2026-04-17", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — TO/W", "evidenceLevel": "warning", "warningProductKey": "DMX-TO-W-10" }, { "id": "iem-202604171945-hail-41.70--93.06", "lat": 41.7, "lon": -93.06, "zip": "", "city": "1 W Newton", "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 1 W Newton, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604172008-hail-41.96--92.57", "lat": 41.96, "lon": -92.57, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Tama, IA. Hail size: 1.5\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-202604172010-hail-41.99--92.58", "lat": 41.99, "lon": -92.58, "zip": "", "city": "Toledo", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Toledo, IA. Hail size: 2.5\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2.5 }, { "id": "iem-202604172014-hail-41.96--92.57", "lat": 41.96, "lon": -92.57, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Tama, IA. Hail size: 2.5\".", "sourceDetail": "NWS DMX — Storm Chaser via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2.5 }, { "id": "iem-lsr-2026-04-17-hail-41.99--92.58", "lat": 41.99, "lon": -92.58, "zip": "", "city": "Toledo", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Toledo", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-lsr-2026-04-17-hail-41.96--92.58", "lat": 41.96, "lon": -92.58, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Delayed report - time estimated from radar.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.5 }, { "id": "iem-lsr-2026-04-17-hail-41.96--92.57", "lat": 41.96, "lon": -92.57, "zip": "", "city": "Tama", "date": "2026-04-17", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 0.92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "Delayed report - time and location estimated from radar.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604152048-hail-41.90--93.31", "lat": 41.9, "lon": -93.31, "zip": "", "city": "Collins", "date": "2026-04-15", "county": "Story", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Collins, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Fire Dept/Rescue via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604152131-hail-42.01--92.78", "lat": 42.01, "lon": -92.78, "zip": "", "city": "Le Grand", "date": "2026-04-15", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Le Grand, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Broadcast Media via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604152135-hail-42.00--92.67", "lat": 42, "lon": -92.67, "zip": "", "city": "3 E Montour", "date": "2026-04-15", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 E Montour, IA. Hail size: 2\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2 }, { "id": "iem-202604152138-hail-42.00--92.65", "lat": 42, "lon": -92.65, "zip": "", "city": "3 ENE Montour", "date": "2026-04-15", "county": "Tama", "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 ENE Montour, IA. Hail size: 1.75\".", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1.75 }, { "id": "iem-202604152140-hail-42.00--92.63", "lat": 42, "lon": -92.63, "zip": "", "city": "3 W Toledo", "date": "2026-04-15", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 W Toledo, IA. Hail size: 2\".", "sourceDetail": "NWS DMX — Broadcast Media via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2 }, { "id": "iem-202604160208-hail-42.02--93.35", "lat": 42.02, "lon": -93.35, "zip": "", "city": "2 W Colo", "date": "2026-04-15", "county": "Story", "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 Colo, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "ww-DMX-SV-W-57-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 49 min. Counties: Tama, Marshall. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #57 (49 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-57" }, { "id": "ww-DMX-SV-W-57-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 49 min. Counties: Tama, Marshall. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #57 (49 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-57" }, { "id": "ww-DMX-SV-W-51-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 39 min. Counties: Hamilton, Franklin, Grundy, Hardin, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #51 (39 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-51" }, { "id": "ww-DMX-SV-W-51-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 39 min. Counties: Hamilton, Franklin, Grundy, Hardin, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #51 (39 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-51" }, { "id": "ww-DMX-SV-W-53-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 39 min. Counties: Grundy, Marshall, Tama. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #53 (39 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-53" }, { "id": "ww-DMX-SV-W-53-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 39 min. Counties: Grundy, Marshall, Tama. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #53 (39 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-53" }, { "id": "ww-DMX-SV-W-77-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 33 min. Counties: Story, Grundy, Hardin, Marshall, Tama. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #77 (33 min)", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-77" }, { "id": "ww-DMX-SV-W-77-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 33 min. Counties: Story, Grundy, Hardin, Marshall, Tama. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #77 (33 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-77" }, { "id": "ww-DMX-SV-W-55-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 49 min. Counties: Jasper, Story, Marshall. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #55 (49 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-55" }, { "id": "ww-DMX-SV-W-55-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 49 min. Counties: Jasper, Story, Marshall. Storm tags: wind: 60.0, hail: 1.5\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #55 (49 min)", "evidenceLevel": "warning", "hailSizeInches": 1.5, "warningProductKey": "DMX-SV-W-55" }, { "id": "ww-DMX-SV-W-73-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 38 min. Counties: Hardin, Marshall, Story, Boone. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #73 (38 min)", "windSpeedMph": 50, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-73" }, { "id": "ww-DMX-SV-W-73-2026-04-15-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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: 38 min. Counties: Hardin, Marshall, Story, Boone. Storm tags: wind: 50.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #73 (38 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-73" }, { "id": "ww-DMX-SV-W-74-2026-04-15-Marshall-wind", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-04-15", "county": "Marshall", "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": "iem-202604152139-hail-42.00--92.63", "lat": 42, "lon": -92.63, "zip": "", "city": "3 W Toledo", "date": "2026-04-15", "county": "Tama", "source": "IEM Local Storm Reports", "severity": "severe", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 3 W Toledo, IA. Hail size: 2.5\".", "sourceDetail": "NWS DMX — Public via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 2.5 }, { "id": "iem-202604142154-hail-42.23--93.24", "lat": 42.23, "lon": -93.24, "zip": "", "city": "5 SW New Providence", "date": "2026-04-14", "county": "Hardin", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near 5 SW New Providence, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Trained Spotter via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-202604150433-hail-41.74--92.72", "lat": 41.74, "lon": -92.72, "zip": "", "city": "Grinnell", "date": "2026-04-14", "county": "Poweshiek", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "hail", "confidence": 92, "damageTypes": [ "Shingle bruising", "Granule displacement", "Metal denting", "Vehicle damage" ], "description": "HAIL reported near Grinnell, IA. Hail size: 1\".", "sourceDetail": "NWS DMX — Storm Chaser via Iowa Mesonet", "evidenceLevel": "reported", "hailSizeInches": 1 }, { "id": "iem-geo-2026-04-14T20:20:00Z-tornado-42.35--93.10", "lat": 42.35, "lon": -93.1, "zip": "", "city": "1 S Eldora", "date": "2026-04-14", "county": "Hardin", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "tornado", "confidence": 92, "damageTypes": [ "Structural roof failure", "Debris penetration", "Complete shingle removal" ], "description": "TORNADO reported near 1 S Eldora, IA. Emergency Management relayed reports of a brief tornado touchdown just south of Eldora with damage to a building.", "sourceDetail": "NWS DMX — Emergency Mngr via Iowa Mesonet (GeoJSON)", "evidenceLevel": "reported" }, { "id": "iem-geo-2026-04-14T20:20:00Z-tornado-42.36--93.06", "lat": 42.36, "lon": -93.06, "zip": "", "city": "2 E Eldora", "date": "2026-04-14", "county": "Hardin", "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 E Eldora, IA. Time and location estimated from radar.", "sourceDetail": "NWS DMX — Public via Iowa Mesonet (GeoJSON)", "evidenceLevel": "reported" }, { "id": "asos-bf-MIW-2026-04-08", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-04-08", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 54 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-8-2026-03-30-Marshall-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Marshall", "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-Marshall-wind", "zip": "", "city": "", "date": "2026-03-30", "county": "Marshall", "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-Marshall-hail", "zip": "", "city": "", "date": "2026-03-30", "county": "Marshall", "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": "asos-bf-MIW-2026-03-16", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-03-16", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 53 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 53, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-03-15-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-03-15", "county": "Marshall", "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 KMIW Marshalltown Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202603160353-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-03-15", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-3-Marshall-wind-2026-03-15", "zip": "", "city": "Marshall", "date": "2026-03-15", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-3" }, { "id": "asos-bf-MIW-2026-03-13", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-03-13", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 62 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 62, "evidenceLevel": "observed" }, { "id": "asos-bf-GGI-2026-03-13", "lat": 41.7097, "lon": -92.7332, "zip": "", "city": "Grinnell", "date": "2026-03-13", "county": "Poweshiek", "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": "Grinnell (GGI) recorded a 52 mph gust.", "sourceDetail": "IA_ASOS automated observation — Grinnell (GGI) [365d backfill 2026-08]", "windSpeedMph": 52, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-2-Marshall-wind-2026-03-13", "zip": "", "city": "Marshall", "date": "2026-03-13", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-2" }, { "id": "asos-bf-MIW-2026-02-20", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-02-20", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 50 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2026-02-18", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-02-18", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 55 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-lsr-2026-01-21-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-01-21", "county": "Marshall", "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 KMIW Marshalltown Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2026-01-21", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-01-21", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 59 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-202601212249-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2026-01-21", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 68 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-1-Marshall-wind-2026-01-21", "zip": "", "city": "Marshall", "date": "2026-01-21", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-1" }, { "id": "asos-bf-MIW-2026-01-18", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-01-18", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 55 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2026-01-16", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-01-16", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 50 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 50, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2026-01-14", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2026-01-14", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 51 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2025-12-29", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2025-12-29", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 59 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-28-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-12-28", "county": "Marshall", "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 at the Marshalltown airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 61, "evidenceLevel": "observed" }, { "id": "iem-202512282225-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-12-28", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 70 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 70, "evidenceLevel": "observed" }, { "id": "iem-lsr-2025-12-18-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-12-18", "county": "Marshall", "source": "IEM Local Storm Reports", "severity": "high", "eventType": "wind", "confidence": 0.92, "damageTypes": [ "Roof shingle lift", "Soffit/fascia damage", "Tree strike risk", "Fence/screen damage" ], "description": "NON-TSTM WND GST reported near 4 E Albion", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 59, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2025-12-18", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2025-12-18", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202512190120-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-12-18", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 68 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 68, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2025-12-10", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2025-12-10", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 55 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 55, "evidenceLevel": "observed" }, { "id": "iem-202512101008-wind-42.11--92.92", "lat": 42.11, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-12-10", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 63 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 63, "evidenceLevel": "observed" }, { "id": "iem-ww-DMX-HW-W-6-Marshall-wind-2025-12-10", "zip": "", "city": "Marshall", "date": "2025-12-10", "county": "Marshall", "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 Marshall.", "sourceDetail": "NWS DMX — HW/W", "evidenceLevel": "warning", "warningProductKey": "DMX-HW-W-6" }, { "id": "iem-lsr-2025-11-26-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-11-26", "county": "Marshall", "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 KMIW Marshalltown Airport.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "asos-bf-GGI-2025-11-26", "lat": 41.7097, "lon": -92.7332, "zip": "", "city": "Grinnell", "date": "2025-11-26", "county": "Poweshiek", "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": "Grinnell (GGI) recorded a 51 mph gust.", "sourceDetail": "IA_ASOS automated observation — Grinnell (GGI) [365d backfill 2026-08]", "windSpeedMph": 51, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2025-11-26", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2025-11-26", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 58 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 58, "evidenceLevel": "observed" }, { "id": "iem-202511260944-wind-42.12--92.92", "lat": 42.12, "lon": -92.92, "zip": "", "city": "4 E Albion", "date": "2025-11-26", "county": "Marshall", "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 4 E Albion, IA. Peak gust: 67 mph.", "sourceDetail": "NWS DMX — ASOS via Iowa Mesonet", "windSpeedMph": 67, "evidenceLevel": "observed" }, { "id": "asos-bf-MIW-2025-11-25", "lat": 42.1106, "lon": -92.9163, "zip": "", "city": "MARSHALLTOWN", "date": "2025-11-25", "county": "Marshall", "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": "MARSHALLTOWN (MIW) recorded a 54 mph gust.", "sourceDetail": "IA_ASOS automated observation — MARSHALLTOWN (MIW) [365d backfill 2026-08]", "windSpeedMph": 54, "evidenceLevel": "observed" }, { "id": "ww-DMX-SV-W-249-2025-09-22-Marshall-wind", "zip": "", "city": "", "date": "2025-09-22", "county": "Marshall", "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: 46 min. Counties: Wright, Hardin, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #249 (46 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-249" }, { "id": "ww-DMX-SV-W-249-2025-09-22-Marshall-hail", "zip": "", "city": "", "date": "2025-09-22", "county": "Marshall", "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: 46 min. Counties: Wright, Hardin, Marshall, Story. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #249 (46 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-249" }, { "id": "ww-DMX-SV-W-254-2025-09-22-Marshall-wind", "zip": "", "city": "", "date": "2025-09-22", "county": "Marshall", "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: 52 min. Counties: Boone, Greene, Marshall, Franklin, Grundy, Hardin. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #254 (52 min)", "windSpeedMph": 60, "evidenceLevel": "warning", "warningProductKey": "DMX-SV-W-254" }, { "id": "ww-DMX-SV-W-254-2025-09-22-Marshall-hail", "zip": "", "city": "", "date": "2025-09-22", "county": "Marshall", "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: 52 min. Counties: Boone, Greene, Marshall, Franklin, Grundy, Hardin. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.", "sourceDetail": "NWS DMX — Severe Thunderstorm Warning #254 (52 min)", "evidenceLevel": "warning", "hailSizeInches": 1, "warningProductKey": "DMX-SV-W-254" } ] }