{
 "dataset": "Eau Claire, WI storm events — 12-month window, 25-mile radius (floods and special weather statements excluded, matching the city page)",
 "license": "https://www.stormauditor.com/data-license",
 "provenance": "Deduplicated 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": "2026-08-24T12:15:10.398+00:00",
 "window_days": 365,
 "event_count": 17,
 "fields": {
  "date": "Event date (YYYY-MM-DD, local storm day)",
  "county": "County or county-equivalent",
  "city": "Nearest city/place named in the source record",
  "event_type": "hazard tag: wind | hail | tornado | flood | lightning",
  "severity": "StormAuditor severity bucket (low|moderate|high|severe)",
  "evidence": "evidence level of the source record",
  "wind_mph": "reported/estimated wind gust, mph (blank if n/a)",
  "hail_in": "reported/estimated hail size, inches (blank if n/a)",
  "source": "originating public record (NWS warning, LSR, NCEI, ...)",
  "lat": "event latitude (WGS84, may be blank)",
  "lon": "event longitude (WGS84, may be blank)"
 },
 "events": [
  {
   "id": "iem-lsr-2026-06-19-hail-44.76--91.46",
   "lat": 44.76,
   "lon": -91.46,
   "zip": "",
   "city": "Eau Claire",
   "date": "2026-06-19",
   "county": "Eau Claire",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "HAIL reported near Eau Claire",
   "sourceDetail": "NWS MPX — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 0.75
  },
  {
   "id": "iem-lsr-2026-06-19-hail-44.76--91.28",
   "lat": 44.76,
   "lon": -91.28,
   "zip": "",
   "city": "Fall Creek",
   "date": "2026-06-19",
   "county": "Eau Claire",
   "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. Quarter to half dollar size hail near Fall Creek.",
   "sourceDetail": "NWS MPX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.25
  },
  {
   "id": "iem-lsr-2026-06-19-hail-44.79--91.14",
   "lat": 44.79,
   "lon": -91.14,
   "zip": "",
   "city": "7 ENE Fall Creek",
   "date": "2026-06-19",
   "county": "Eau Claire",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Photo report via Facebook of quarter sized hail near WI 27 and CTH NL. Time estimated from radar.",
   "sourceDetail": "NWS MPX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-lsr-2026-06-19-hail-44.58--91.22",
   "lat": 44.58,
   "lon": -91.22,
   "zip": "",
   "city": "Osseo",
   "date": "2026-06-19",
   "county": "Trempealeau",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Image of hailstones next to a golf ball for reference. Time estimated from radar.",
   "sourceDetail": "NWS ARX — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.75
  },
  {
   "id": "iem-lsr-2026-06-19-hail-44.59--91.17",
   "lat": 44.59,
   "lon": -91.17,
   "zip": "",
   "city": "2 ENE Osseo",
   "date": "2026-06-19",
   "county": "Trempealeau",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Report of quarter sized hail east of Osseo.",
   "sourceDetail": "NWS ARX — Trained Spotter via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-lsr-2026-06-19-hail-44.60--91.19",
   "lat": 44.6,
   "lon": -91.19,
   "zip": "",
   "city": "6 SSW Augusta",
   "date": "2026-06-19",
   "county": "Eau Claire",
   "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 MPX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.5
  },
  {
   "id": "iem-geo-2026-06-19-tornado-44.58--91.24",
   "lat": 44.58,
   "lon": -91.24,
   "zip": "",
   "city": "1 W Osseo",
   "date": "2026-06-19",
   "county": "Trempealeau",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "tornado",
   "confidence": 0.9,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "Rating: EF0 | This brief, weak, and narrow tornado began as a highly visible funnel cloud just west of Osseo. It touched down at a baseball field off US Highway 10 where it destroyed a storage garage and caused tree damage. The tornado likely lifted temporarily as it tracked southeast and crossed the highway, with the next downstream damage occurring off W 5th St near Spruce Rd. In this area, it damaged a couple sheds, trees, and a power pole before dissipating.",
   "sourceDetail": "NWS ARX — NWS Storm Survey via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "asos-bf-EAU-2026-05-18",
   "lat": 44.8658,
   "lon": -91.4843,
   "zip": "",
   "city": "EAU CLAIRE",
   "date": "2026-05-18",
   "county": "Chippewa",
   "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": "EAU CLAIRE (EAU) recorded a 53 mph gust.",
   "sourceDetail": "WI_ASOS automated observation — EAU CLAIRE (EAU) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-04-23-hail-44.87--91.93",
   "lat": 44.87,
   "lon": -91.93,
   "zip": "",
   "city": "Menomonie",
   "date": "2026-04-23",
   "county": "Dunn",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "HAIL reported near Menomonie",
   "sourceDetail": "NWS MPX — Trained Spotter via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 0.75
  },
  {
   "id": "iem-geo-2026-04-17-tornado-44.55--91.17",
   "lat": 44.55,
   "lon": -91.17,
   "zip": "",
   "city": "3 SE Osseo",
   "date": "2026-04-17",
   "county": "Trempealeau",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "tornado",
   "confidence": 0.9,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "This EF1-rated tornado touched down near Interstate 94 where County Road B nearly intersects about 3 miles southeast of Osseo WI. The tornado affected rural areas causing tree damage, sometimes extensive acreage, before ending near the intersection of Highway 10 and Moe Rd. The path was 5 miles with max wind estimated at 100 mph.",
   "sourceDetail": "NWS ARX — NWS Storm Survey via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-geo-2026-04-17-tornado-44.58--91.24",
   "lat": 44.58,
   "lon": -91.24,
   "zip": "",
   "city": "1 W Osseo",
   "date": "2026-04-17",
   "county": "Trempealeau",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "tornado",
   "confidence": 0.9,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "Numerous houses and trees damaged along County Rd K and Old 17.",
   "sourceDetail": "NWS ARX — Trained Spotter via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-geo-2026-04-17-tornado-44.58--91.12",
   "lat": 44.58,
   "lon": -91.12,
   "zip": "",
   "city": "5 E Osseo",
   "date": "2026-04-17",
   "county": "Jackson",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "tornado",
   "confidence": 0.9,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "An officer reported a tornado near the intersection of County Rd M and Highway 10 heading east.",
   "sourceDetail": "NWS ARX — Law Enforcement via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "asos-bf-EAU-2026-04-17",
   "lat": 44.8658,
   "lon": -91.4843,
   "zip": "",
   "city": "EAU CLAIRE",
   "date": "2026-04-17",
   "county": "Chippewa",
   "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": "EAU CLAIRE (EAU) recorded a 51 mph gust.",
   "sourceDetail": "WI_ASOS automated observation — EAU CLAIRE (EAU) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-04-13-hail-44.57--91.30",
   "lat": 44.57,
   "lon": -91.3,
   "zip": "",
   "city": "4 ENE Strum",
   "date": "2026-04-13",
   "county": "Trempealeau",
   "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 4 ENE Strum",
   "sourceDetail": "NWS ARX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.75
  },
  {
   "id": "iem-lsr-2026-04-13-hail-44.62--91.20",
   "lat": 44.62,
   "lon": -91.2,
   "zip": "",
   "city": "6 SW Augusta",
   "date": "2026-04-13",
   "county": "Eau Claire",
   "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 6 SW Augusta",
   "sourceDetail": "NWS MPX — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "asos-bf-LUM-2026-03-13",
   "lat": 44.8923,
   "lon": -91.8678,
   "zip": "",
   "city": "Menomonie  WI",
   "date": "2026-03-13",
   "county": "Dunn",
   "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": "Menomonie  WI (LUM) recorded a 51 mph gust.",
   "sourceDetail": "WI_ASOS automated observation — Menomonie  WI (LUM) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-EAU-2026-03-13",
   "lat": 44.8658,
   "lon": -91.4843,
   "zip": "",
   "city": "EAU CLAIRE",
   "date": "2026-03-13",
   "county": "Chippewa",
   "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": "EAU CLAIRE (EAU) recorded a 51 mph gust.",
   "sourceDetail": "WI_ASOS automated observation — EAU CLAIRE (EAU) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  }
 ]
}