{
 "dataset": "Grand Forks, ND storm events — 12-month window, 25-mile radius plus Grand Forks records (floods and special weather statements excluded, matching the city page)",
 "license": "https://www.stormauditor.com/data-license",
 "provenance": "Consolidated by StormAuditor from public NOAA/NWS records (warnings, Local Storm Reports, NCEI Storm Events) under the published methodology at https://www.stormauditor.com/methodology",
 "refreshed_at": "2026-09-20T08:20:21.22+00:00",
 "window_days": 365,
 "schema_version": "2.0.0",
 "event_count": 83,
 "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-96aceb4260016ee0.001-Grand Fo-wind",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-08",
   "county": "Grand Forks",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 62,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Wind Advisory for Grand Forks. Wind Advisory issued September 7 at 1:13PM CDT until September 8 at 7:00PM CDT by NWS Grand Forks ND",
   "sourceDetail": "NWS Grand Forks ND — Wind Advisory",
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-WI-Y-14"
  },
  {
   "id": "iem-lsr-2026-09-06-wind-47.72--97.72",
   "lat": 47.72,
   "lon": -97.72,
   "zip": "",
   "city": "7 W Northwood",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Davis personal weather station.",
   "sourceDetail": "NWS FGF — Public via Iowa Mesonet",
   "windSpeedMph": 53,
   "evidenceLevel": "reported"
  },
  {
   "id": "spc-2026-09-06-wind-47.74-97",
   "lat": 47.74,
   "lon": -97.56,
   "zip": "",
   "city": "1 NE Northwood",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "source": "SPC Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.93,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "wind reported near 1 NE Northwood",
   "sourceDetail": "SPC filtered reports — 2026-09-06",
   "windSpeedMph": 62,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-ww-FGF-SV-W-195-Grand Forks-wind-2026-09-06",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-06. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-195"
  },
  {
   "id": "iem-ww-FGF-SV-W-195-Grand Forks-hail-2026-09-06",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-06. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-195"
  },
  {
   "id": "nws-alert-9a6caad17af61c75.001-Grand Fo-wind",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "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 Grand Forks. Severe Thunderstorm Warning issued September 6 at 6:11PM CDT until September 6 at 7:15PM CDT by NWS Grand Forks ND",
   "sourceDetail": "NWS Grand Forks ND — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-196"
  },
  {
   "id": "iem-ww-FGF-SV-W-196-Grand Forks-hail-2026-09-06",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-06",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-06. Storm tag hail: 0.88\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.88,
   "warningProductKey": "FGF-SV-W-196"
  },
  {
   "id": "spc-2026-09-03-wind-48.12-24",
   "lat": 48.12,
   "lon": -97.54,
   "zip": "",
   "city": "4 WSW Johnstown",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "source": "SPC Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.93,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "wind reported near 4 WSW Johnstown",
   "sourceDetail": "SPC filtered reports — 2026-09-03",
   "windSpeedMph": 63,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-lsr-2026-09-03-wind-47.97--97.40",
   "lat": 47.97,
   "lon": -97.4,
   "zip": "",
   "city": "3 SSW Mekinock",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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": "Gust Measured at GFK AFB sensor RDR.",
   "sourceDetail": "NWS FGF — ASOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-RDR-2026-09-03-79019",
   "lat": 47.9611,
   "lon": -97.4012,
   "zip": "",
   "city": "GRAND_FORKS_AFB",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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": "GRAND_FORKS_AFB (RDR) recorded a 58 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS_AFB (RDR)",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-FGF-SV-W-185-Grand Forks-wind-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-185"
  },
  {
   "id": "iem-ww-FGF-SV-W-185-Grand Forks-hail-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag hail: 1.5\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.5,
   "warningProductKey": "FGF-SV-W-185"
  },
  {
   "id": "iem-ww-FGF-SV-W-172-Grand Forks-wind-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag wind: 70 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-172"
  },
  {
   "id": "iem-ww-FGF-SV-W-172-Grand Forks-hail-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-172"
  },
  {
   "id": "nws-alert-67863c4fd9814678.001-Grand Fo-wind",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 Grand Forks. Severe Thunderstorm Warning issued September 3 at 6:41PM CDT until September 3 at 7:15PM CDT by NWS Grand Forks ND",
   "sourceDetail": "NWS Grand Forks ND — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-184"
  },
  {
   "id": "iem-ww-FGF-SV-W-174-Grand Forks-wind-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-174"
  },
  {
   "id": "iem-ww-FGF-SV-W-174-Grand Forks-hail-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-174"
  },
  {
   "id": "iem-ww-FGF-SV-W-171-Grand Forks-wind-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag wind: 70 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-171"
  },
  {
   "id": "iem-ww-FGF-SV-W-171-Grand Forks-hail-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-171"
  },
  {
   "id": "iem-ww-FGF-SV-W-184-Grand Forks-hail-2026-09-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-09-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-09-03. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-184"
  },
  {
   "id": "nws-alert-88cc7c5ef5607c64.001-Grand Fo-wind",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-31",
   "county": "Grand Forks",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 62,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Wind Advisory for Grand Forks. Wind Advisory issued August 31 at 6:46PM CDT until August 31 at 7:00PM CDT by NWS Grand Forks ND",
   "sourceDetail": "NWS Grand Forks ND — Wind Advisory",
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-WI-Y-13"
  },
  {
   "id": "iem-ww-FGF-SV-W-168-Grand Forks-wind-2026-08-30",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-30",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-30. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-168"
  },
  {
   "id": "iem-ww-FGF-SV-W-168-Grand Forks-hail-2026-08-30",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-30",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-30. Storm tag hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "FGF-SV-W-168"
  },
  {
   "id": "iem-ww-FGF-SV-W-163-Grand Forks-wind-2026-08-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-24. Storm tag wind: 70 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-163"
  },
  {
   "id": "iem-ww-FGF-SV-W-163-Grand Forks-hail-2026-08-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-24. Storm tag hail: 1.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.75,
   "warningProductKey": "FGF-SV-W-163"
  },
  {
   "id": "iem-ww-FGF-SV-W-164-Grand Forks-wind-2026-08-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-24. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-164"
  },
  {
   "id": "iem-ww-FGF-SV-W-164-Grand Forks-hail-2026-08-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-24. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-164"
  },
  {
   "id": "iem-ww-FGF-SV-W-139-Grand Forks-wind-2026-08-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-03",
   "county": "Grand Forks",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS FGF for Grand Forks on 2026-08-03. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-139"
  },
  {
   "id": "iem-ww-FGF-SV-W-139-Grand Forks-hail-2026-08-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-03. Storm tag hail: 1.25\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.25,
   "warningProductKey": "FGF-SV-W-139"
  },
  {
   "id": "iem-ww-FGF-SV-W-137-Grand Forks-wind-2026-08-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-03",
   "county": "Grand Forks",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS FGF for Grand Forks on 2026-08-03. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-137"
  },
  {
   "id": "iem-ww-FGF-SV-W-137-Grand Forks-hail-2026-08-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-08-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-08-03. Storm tag hail: 1.25\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.25,
   "warningProductKey": "FGF-SV-W-137"
  },
  {
   "id": "iem-lsr-2026-07-30-wind-47.92--97.32",
   "lat": 47.92,
   "lon": -97.32,
   "zip": "",
   "city": "2 E Emerado",
   "date": "2026-07-30",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NDAWN mesonet site 2 miles east of Emerado recorded 57 mph 30 ft wind gust at 4:10 pm CDT.",
   "sourceDetail": "NWS FGF — Mesonet via Iowa Mesonet",
   "windSpeedMph": 57,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-FGF-SV-W-136-Grand Forks-wind-2026-07-30",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-07-30",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-07-30. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-136"
  },
  {
   "id": "iem-ww-FGF-SV-W-136-Grand Forks-hail-2026-07-30",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-07-30",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-07-30. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-136"
  },
  {
   "id": "iem-lsr-2026-07-24-hail-48.08--97.47",
   "lat": 48.08,
   "lon": -97.47,
   "zip": "",
   "city": "Gilby",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "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 Gilby",
   "sourceDetail": "NWS FGF — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-lsr-2026-07-24-hail-48.08--97.38",
   "lat": 48.08,
   "lon": -97.38,
   "zip": "",
   "city": "4 E Gilby",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "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 E Gilby",
   "sourceDetail": "NWS FGF — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.25
  },
  {
   "id": "iem-lsr-2026-07-24-hail-48.07--97.24",
   "lat": 48.07,
   "lon": -97.24,
   "zip": "",
   "city": "3 W Manvel",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Corrects previous hail report from Manvel. Picture from public passed on from broadcast media.",
   "sourceDetail": "NWS FGF — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-lsr-2026-07-24-hail-48.07--97.18",
   "lat": 48.07,
   "lon": -97.18,
   "zip": "",
   "city": "Manvel",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Picture from public passed on from broadcast media.",
   "sourceDetail": "NWS FGF — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-ww-FGF-SV-W-122-Grand Forks-wind-2026-07-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-07-24. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-122"
  },
  {
   "id": "iem-ww-FGF-SV-W-122-Grand Forks-hail-2026-07-24",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-07-24",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-07-24. Storm tag hail: 1.5\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.5,
   "warningProductKey": "FGF-SV-W-122"
  },
  {
   "id": "iem-ww-FGF-SV-W-70-Grand Forks-wind-2026-06-29",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-29",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-29. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-70"
  },
  {
   "id": "iem-ww-FGF-SV-W-70-Grand Forks-hail-2026-06-29",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-29",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-29. Storm tag hail: 1.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.75,
   "warningProductKey": "FGF-SV-W-70"
  },
  {
   "id": "iem-ww-FGF-TO-W-10-Grand Forks-tornado-2026-06-29",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-29",
   "county": "Grand Forks",
   "source": "IEM Watch/Warn Archive",
   "severity": "severe",
   "eventType": "tornado",
   "confidence": 0.85,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "Tornado Warning issued by NWS FGF for Grand Forks on 2026-06-29. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Tornado Warning",
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-TO-W-10"
  },
  {
   "id": "asos-bf-RDR-2026-06-10",
   "lat": 47.9611,
   "lon": -97.4012,
   "zip": "",
   "city": "GRAND_FORKS_AFB",
   "date": "2026-06-10",
   "county": "Grand Forks",
   "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": "GRAND_FORKS_AFB (RDR) recorded a 51 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS_AFB (RDR) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-06-03-hail-48.01--97.34",
   "lat": 48.01,
   "lon": -97.34,
   "zip": "",
   "city": "1 E Mekinock",
   "date": "2026-06-03",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "1 Inch hail reported 1 mile east of Mekinock_ ND. Relayed by media partner.",
   "sourceDetail": "NWS FGF — Broadcast Media via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-ww-FGF-SV-W-21-Grand Forks-wind-2026-06-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-03. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-21"
  },
  {
   "id": "iem-ww-FGF-SV-W-21-Grand Forks-hail-2026-06-03",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-03",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-03. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-21"
  },
  {
   "id": "iem-ww-FGF-SV-W-20-Grand Forks-wind-2026-06-02",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-02",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-02. Storm tag wind: 70 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-20"
  },
  {
   "id": "iem-ww-FGF-SV-W-20-Grand Forks-hail-2026-06-02",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-06-02",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-06-02. Storm tag hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "FGF-SV-W-20"
  },
  {
   "id": "iem-lsr-2026-05-14-wind-47.83--97.77",
   "lat": 47.83,
   "lon": -97.77,
   "zip": "",
   "city": "3 NE Logan Center",
   "date": "2026-05-14",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Mesonet station DVI08123 Northwood ND 12 NW.",
   "sourceDetail": "NWS FGF — Mesonet via Iowa Mesonet",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-05-14",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-05-14",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 54 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 54,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-05-12",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-05-12",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 50 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 50,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-05-03",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-05-03",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 51 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-04-23",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-04-23",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 54 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 54,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RDR-2026-04-23",
   "lat": 47.9611,
   "lon": -97.4012,
   "zip": "",
   "city": "GRAND_FORKS_AFB",
   "date": "2026-04-23",
   "county": "Grand Forks",
   "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": "GRAND_FORKS_AFB (RDR) recorded a 53 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS_AFB (RDR) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-FGF-SV-W-1-Grand Forks-wind-2026-04-22",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-04-22",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-04-22. Storm tag wind: 60 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-SV-W-1"
  },
  {
   "id": "iem-ww-FGF-SV-W-1-Grand Forks-hail-2026-04-22",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-04-22",
   "county": "Grand Forks",
   "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 FGF for Grand Forks on 2026-04-22. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS FGF — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "FGF-SV-W-1"
  },
  {
   "id": "iem-lsr-2026-04-12-hail-47.92--97.05",
   "lat": 47.92,
   "lon": -97.05,
   "zip": "",
   "city": "1 ENE Grand Forks",
   "date": "2026-04-12",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Spotter reports penny sized hail in Grand Forks near 1st Ave N.",
   "sourceDetail": "NWS FGF — Trained Spotter via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 0.75
  },
  {
   "id": "asos-bf-GFK-2026-03-13",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-03-13",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 50 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 50,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-03-12-wind-47.95--97.18",
   "lat": 47.95,
   "lon": -97.18,
   "zip": "",
   "city": "6 WNW Grand Forks",
   "date": "2026-03-12",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "ASOS station KGFK Grand Forks AP ND.",
   "sourceDetail": "NWS FGF — ASOS via Iowa Mesonet",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-03-12",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-03-12",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 52 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-03-08",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-03-08",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 56 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 56,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-02-27",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-02-27",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 59 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 59,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RDR-2026-02-27",
   "lat": 47.9611,
   "lon": -97.4012,
   "zip": "",
   "city": "GRAND_FORKS_AFB",
   "date": "2026-02-27",
   "county": "Grand Forks",
   "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": "GRAND_FORKS_AFB (RDR) recorded a 55 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS_AFB (RDR) [365d backfill 2026-08]",
   "windSpeedMph": 55,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-FGF-HW-W-1-Grand Forks-wind-2026-02-27",
   "zip": "",
   "city": "Grand Forks",
   "date": "2026-02-27",
   "county": "Grand Forks",
   "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 Grand Forks.",
   "sourceDetail": "NWS FGF — HW/W",
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-HW-W-1"
  },
  {
   "id": "asos-bf-GFK-2026-01-18",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-01-18",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 56 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 56,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2026-01-16",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2026-01-16",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 58 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-18-wind-47.95--97.18",
   "lat": 47.95,
   "lon": -97.18,
   "zip": "",
   "city": "6 WNW Grand Forks",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "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 KGFK Grand Forks AP ND.",
   "sourceDetail": "NWS FGF — ASOS via Iowa Mesonet",
   "windSpeedMph": 64,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-18-wind-47.97--97.40",
   "lat": 47.97,
   "lon": -97.4,
   "zip": "",
   "city": "4 NNW Emerado",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "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 KRDR Grand Forks ND AFB.",
   "sourceDetail": "NWS FGF — ASOS via Iowa Mesonet",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-18-wind-47.92--97.32",
   "lat": 47.92,
   "lon": -97.32,
   "zip": "",
   "city": "2 E Emerado",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "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": "NDAWN Emerado 2E 10m wind.",
   "sourceDetail": "NWS FGF — Mesonet via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-18-wind-47.80--97.78",
   "lat": 47.8,
   "lon": -97.78,
   "zip": "",
   "city": "2 E Logan Center",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NDAWN Logan Center 2E 10m wind.",
   "sourceDetail": "NWS FGF — Mesonet via Iowa Mesonet",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-18-wind-48.17--97.71",
   "lat": 48.17,
   "lon": -97.71,
   "zip": "",
   "city": "3 WNW Inkster",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Mesonet station 324319 Inkster ND NDAWN.",
   "sourceDetail": "NWS FGF — Mesonet via Iowa Mesonet",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2025-12-18",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 67 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RDR-2025-12-18",
   "lat": 47.9611,
   "lon": -97.4012,
   "zip": "",
   "city": "GRAND_FORKS_AFB",
   "date": "2025-12-18",
   "county": "Grand Forks",
   "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": "GRAND_FORKS_AFB (RDR) recorded a 60 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS_AFB (RDR) [365d backfill 2026-08]",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2025-12-16",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-12-16",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 57 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 57,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-FGF-HW-W-6-Grand Forks-wind-2025-12-16",
   "zip": "",
   "city": "Grand Forks",
   "date": "2025-12-16",
   "county": "Grand Forks",
   "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 Grand Forks.",
   "sourceDetail": "NWS FGF — HW/W",
   "evidenceLevel": "warning",
   "warningProductKey": "FGF-HW-W-6"
  },
  {
   "id": "asos-bf-GFK-2025-11-02",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-11-02",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 51 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2025-10-26",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-10-26",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 55 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 55,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2025-10-11",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-10-11",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 51 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-10-05-wind-47.96--97.13",
   "lat": 47.96,
   "lon": -97.13,
   "zip": "",
   "city": "4 NW Grand Forks",
   "date": "2025-10-05",
   "county": "Grand Forks",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Corrects previous tstm wnd gst report time from 4 NW Grand Forks.",
   "sourceDetail": "NWS FGF — ASOS via Iowa Mesonet",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-GFK-2025-10-05",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-10-05",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 57 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 57,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-10-04-hail-47.91--97.63",
   "lat": 47.91,
   "lon": -97.63,
   "zip": "",
   "city": "Larimore",
   "date": "2025-10-04",
   "county": "Grand Forks",
   "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 Larimore",
   "sourceDetail": "NWS FGF — Trained Spotter via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 0.88
  },
  {
   "id": "asos-bf-GFK-2025-10-04",
   "lat": 47.9492,
   "lon": -97.1761,
   "zip": "",
   "city": "GRAND_FORKS",
   "date": "2025-10-04",
   "county": "Grand Forks",
   "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": "GRAND_FORKS (GFK) recorded a 63 mph gust.",
   "sourceDetail": "ND_ASOS automated observation — GRAND_FORKS (GFK) [365d backfill 2026-08]",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  }
 ]
}