{
 "dataset": "Frederick, MD storm events — 12-month window, 25-mile radius plus Frederick 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": "2026-09-20T10:25:18.271+00:00",
 "window_days": 365,
 "schema_version": "2.0.0",
 "event_count": 243,
 "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-fb51965633f68623.001-Frederic-wind-2026-09-04",
   "zip": "",
   "city": "",
   "date": "2026-09-04",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued September 4 at 2:04PM EDT until September 4 at 9:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-A-653"
  },
  {
   "id": "nws-alert-8df2779c19e74aa6.001-Frederic-wind-2026-09-03",
   "lat": 39.394000000000005,
   "lon": -77.23599999999999,
   "zip": "",
   "city": "",
   "date": "2026-09-03",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Warning issued September 3 at 10:51PM EDT until September 3 at 11:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-491"
  },
  {
   "id": "nws-alert-872c9d177266cf50.001-Frederic-hail-2026-09-03",
   "lat": 39.394000000000005,
   "lon": -77.23599999999999,
   "zip": "",
   "city": "",
   "date": "2026-09-03",
   "county": "Frederick",
   "source": "NWS Weather Alert",
   "severity": "high",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Frederick. Max hail: 1\". Severe Thunderstorm Warning issued September 3 at 10:25PM EDT until September 3 at 11:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 1\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-491"
  },
  {
   "id": "nws-alert-7abeea66cc85dfee.001-Washingt-wind-2026-09-03",
   "lat": 39.641999999999996,
   "lon": -77.59900000000002,
   "zip": "",
   "city": "",
   "date": "2026-09-03",
   "county": "Washington",
   "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 Washington. Severe Thunderstorm Warning issued September 3 at 9:42PM EDT until September 3 at 9:45PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-488"
  },
  {
   "id": "nws-alert-69ba63c3cda40af3.002-Washingt-hail-2026-09-03",
   "lat": 39.641999999999996,
   "lon": -77.59900000000002,
   "zip": "",
   "city": "",
   "date": "2026-09-03",
   "county": "Washington",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Washington. Max hail: 0.75\". Severe Thunderstorm Warning issued September 3 at 9:28PM EDT until September 3 at 9:45PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-488"
  },
  {
   "id": "ww-LWX-SV-W-459-2026-09-02-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Frederick",
   "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 LWX on 2026-09-02. Duration: 45 min. Counties: Baltimore, Carroll, Frederick, Harford, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #459 (45 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-459"
  },
  {
   "id": "ww-LWX-SV-W-459-2026-09-02-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Frederick",
   "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 LWX on 2026-09-02. Duration: 45 min. Counties: Baltimore, Carroll, Frederick, Harford, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #459 (45 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-459"
  },
  {
   "id": "nws-alert-95e3c4209e30da5a.001-Washingt-wind-2026-09-02",
   "lat": 39.6109090909091,
   "lon": -77.21636363636362,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Washington",
   "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 Washington. Max wind: 60 mph. Severe Thunderstorm Warning issued September 2 at 12:22PM EDT until September 2 at 12:45PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max wind: 60 mph.",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-459"
  },
  {
   "id": "nws-alert-95e3c4209e30da5a.001-Washingt-hail-2026-09-02",
   "lat": 39.6109090909091,
   "lon": -77.21636363636362,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Washington",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Washington. Max hail: 0.75\". Severe Thunderstorm Warning issued September 2 at 12:22PM EDT until September 2 at 12:45PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-459"
  },
  {
   "id": "nws-alert-59184b17c4b7a1eb.001-Baltimor-wind-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Baltimore",
   "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 Baltimore. Severe Thunderstorm Warning issued September 2 at 1:28PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-7427630116978049.001-Baltimor-hail-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Baltimore",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Baltimore. Max hail: 0.75\". Severe Thunderstorm Warning issued September 2 at 1:10PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-59184b17c4b7a1eb.001-Carroll-wind-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Carroll",
   "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 Carroll. Severe Thunderstorm Warning issued September 2 at 1:28PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-7427630116978049.001-Carroll-hail-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Carroll",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Carroll. Max hail: 0.75\". Severe Thunderstorm Warning issued September 2 at 1:10PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-59184b17c4b7a1eb.001-Frederic-wind-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Warning issued September 2 at 1:28PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-7427630116978049.001-Frederic-hail-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Frederick",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Frederick. Max hail: 0.75\". Severe Thunderstorm Warning issued September 2 at 1:10PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-59184b17c4b7a1eb.001-Howard-wind-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Howard",
   "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 Howard. Severe Thunderstorm Warning issued September 2 at 1:28PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-59184b17c4b7a1eb.001-Montgome-wind-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Montgomery",
   "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 Montgomery. Severe Thunderstorm Warning issued September 2 at 1:28PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "nws-alert-7427630116978049.001-Montgome-hail-2026-09-02",
   "lat": 39.26545454545454,
   "lon": -77.17909090909092,
   "zip": "",
   "city": "",
   "date": "2026-09-02",
   "county": "Montgomery",
   "source": "NWS Weather Alert",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Montgomery. Max hail: 0.75\". Severe Thunderstorm Warning issued September 2 at 1:10PM EDT until September 2 at 1:30PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-461"
  },
  {
   "id": "ww-LWX-SV-W-452-2026-08-27-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 50 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #452 (50 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-452"
  },
  {
   "id": "ww-LWX-SV-W-452-2026-08-27-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 50 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #452 (50 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-452"
  },
  {
   "id": "iem-202608272047-hail-39.60--77.82",
   "lat": 39.6,
   "lon": -77.82,
   "zip": "",
   "city": "Williamsport",
   "date": "2026-08-27",
   "county": "Washington",
   "source": "IEM Local Storm Reports",
   "severity": "moderate",
   "eventType": "hail",
   "confidence": 92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "HAIL reported near Williamsport, MD. Hail size: 0.75\".",
   "sourceDetail": "NWS LWX — 911 Call Center via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 0.75
  },
  {
   "id": "ww-LWX-SV-W-455-2026-08-27-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #455 (49 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-455"
  },
  {
   "id": "ww-LWX-SV-W-455-2026-08-27-Frederick-hail",
   "lat": 39.284000000000006,
   "lon": -77.31400000000001,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #455 (49 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-455"
  },
  {
   "id": "ww-LWX-SV-W-455-2026-08-27-Howard-hail",
   "lat": 39.284000000000006,
   "lon": -77.31400000000001,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Howard",
   "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 LWX on 2026-08-27. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #455 (49 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-455"
  },
  {
   "id": "ww-LWX-SV-W-455-2026-08-27-Carroll-hail",
   "lat": 39.284000000000006,
   "lon": -77.31400000000001,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Carroll",
   "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 LWX on 2026-08-27. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #455 (49 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-455"
  },
  {
   "id": "ww-LWX-SV-W-455-2026-08-27-Montgomery-hail",
   "lat": 39.284000000000006,
   "lon": -77.31400000000001,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Montgomery",
   "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 LWX on 2026-08-27. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #455 (49 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-455"
  },
  {
   "id": "ww-LWX-SV-W-453-2026-08-27-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 40 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #453 (40 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-453"
  },
  {
   "id": "ww-LWX-SV-W-453-2026-08-27-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 LWX on 2026-08-27. Duration: 40 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #453 (40 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-453"
  },
  {
   "id": "ww-LWX-SV-W-453-2026-08-27-Washington-wind",
   "lat": 39.38,
   "lon": -77.56777777777778,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Washington",
   "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 LWX on 2026-08-27. Duration: 40 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #453 (40 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-453"
  },
  {
   "id": "ww-LWX-SV-W-453-2026-08-27-Washington-hail",
   "lat": 39.38,
   "lon": -77.56777777777778,
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Washington",
   "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 LWX on 2026-08-27. Duration: 40 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #453 (40 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-453"
  },
  {
   "id": "nws-alert-851831f4bfdcd82c.002-Frederic-wind-2026-08-27",
   "zip": "",
   "city": "",
   "date": "2026-08-27",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued August 27 at 7:37PM EDT until August 27 at 10:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-A-632"
  },
  {
   "id": "ww-LWX-SV-W-431-2026-08-20-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-20",
   "county": "Frederick",
   "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 LWX on 2026-08-20. Duration: 29 min. Counties: Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #431 (29 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-431"
  },
  {
   "id": "ww-LWX-SV-W-431-2026-08-20-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-20",
   "county": "Frederick",
   "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 LWX on 2026-08-20. Duration: 29 min. Counties: Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #431 (29 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-431"
  },
  {
   "id": "nws-alert-1737cae4dafe2340.002-Frederic-wind-2026-08-16",
   "zip": "",
   "city": "",
   "date": "2026-08-16",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued August 16 at 8:11PM EDT until August 16 at 11:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-A-588"
  },
  {
   "id": "nws-alert-9683cc6d57b5def6.001-Frederic-wind-2026-08-10",
   "lat": 39.57857142857143,
   "lon": -77.00285714285714,
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 Frederick. Max wind: 60 mph. Severe Thunderstorm Warning issued August 10 at 4:08PM EDT until August 10 at 4:15PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max wind: 60 mph.",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-384"
  },
  {
   "id": "ww-LWX-SV-W-380-2026-08-10-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 25 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #380 (25 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-380"
  },
  {
   "id": "nws-alert-9683cc6d57b5def6.001-Frederic-hail-2026-08-10",
   "lat": 39.57857142857143,
   "lon": -77.00285714285714,
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "source": "NWS Weather Alert",
   "severity": "high",
   "eventType": "hail",
   "confidence": 88,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning for Frederick. Max hail: 0.75\". Severe Thunderstorm Warning issued August 10 at 4:08PM EDT until August 10 at 4:15PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Warning Max hail: 0.75\".",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1.25,
   "warningProductKey": "LWX-SV-W-384"
  },
  {
   "id": "ww-LWX-SV-W-386-2026-08-10-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 60 min. Counties: Frederick, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #386 (60 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-386"
  },
  {
   "id": "ww-LWX-SV-W-386-2026-08-10-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 60 min. Counties: Frederick, Montgomery. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #386 (60 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-386"
  },
  {
   "id": "ww-LWX-SV-W-387-2026-08-10-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 39 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #387 (39 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-387"
  },
  {
   "id": "ww-LWX-SV-W-392-2026-08-10-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 50 min. Counties: Montgomery, Baltimore, Frederick, Harford, Howard, Carroll. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #392 (50 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-392"
  },
  {
   "id": "ww-LWX-SV-W-392-2026-08-10-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 50 min. Counties: Montgomery, Baltimore, Frederick, Harford, Howard, Carroll. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #392 (50 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-392"
  },
  {
   "id": "ww-LWX-SV-W-380-2026-08-10-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 25 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #380 (25 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-380"
  },
  {
   "id": "ww-LWX-SV-W-387-2026-08-10-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 LWX on 2026-08-10. Duration: 39 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #387 (39 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-387"
  },
  {
   "id": "nws-alert-c6873804f62fd939.002-Frederic-wind",
   "zip": "",
   "city": "Frederick",
   "date": "2026-08-10",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued August 10 at 3:41PM EDT until August 10 at 9:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-A-555"
  },
  {
   "id": "ww-LWX-SV-W-351-2026-08-07-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-08-07",
   "county": "Frederick",
   "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 LWX on 2026-08-07. Duration: 46 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #351 (46 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-351"
  },
  {
   "id": "ww-LWX-SV-W-351-2026-08-07-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-08-07",
   "county": "Frederick",
   "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 LWX on 2026-08-07. Duration: 46 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #351 (46 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-351"
  },
  {
   "id": "nws-alert-4deeda51d8533b3f.001-Frederic-wind",
   "zip": "",
   "city": "Frederick",
   "date": "2026-08-07",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued August 7 at 1:22PM EDT until August 7 at 9:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-A-540"
  },
  {
   "id": "ww-LWX-SV-W-322-2026-07-28-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 44 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 2.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #322 (44 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-322"
  },
  {
   "id": "ww-LWX-SV-W-322-2026-07-28-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 44 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 2.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #322 (44 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 2,
   "warningProductKey": "LWX-SV-W-322"
  },
  {
   "id": "ww-LWX-SV-W-323-2026-07-28-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 43 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #323 (43 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-323"
  },
  {
   "id": "ww-LWX-SV-W-323-2026-07-28-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 43 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #323 (43 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-323"
  },
  {
   "id": "ww-LWX-SV-W-316-2026-07-28-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 58 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #316 (58 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-316"
  },
  {
   "id": "ww-LWX-SV-W-316-2026-07-28-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 58 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #316 (58 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-316"
  },
  {
   "id": "ww-LWX-SV-W-319-2026-07-28-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 46 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #319 (46 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-319"
  },
  {
   "id": "ww-LWX-SV-W-319-2026-07-28-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 46 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #319 (46 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-319"
  },
  {
   "id": "ww-LWX-SV-W-323-2026-07-28-Washington-wind",
   "lat": 39.60666666666666,
   "lon": -77.42666666666666,
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Washington",
   "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 LWX on 2026-07-28. Duration: 43 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #323 (43 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-323"
  },
  {
   "id": "ww-LWX-SV-W-323-2026-07-28-Washington-hail",
   "lat": 39.60666666666666,
   "lon": -77.42666666666666,
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Washington",
   "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 LWX on 2026-07-28. Duration: 43 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #323 (43 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-323"
  },
  {
   "id": "ww-LWX-SV-W-324-2026-07-28-Frederick-wind",
   "lat": 39.35333333333334,
   "lon": -77.11111111111111,
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 54 min. Counties: Baltimore, Howard, Carroll, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #324 (54 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-W-324"
  },
  {
   "id": "ww-LWX-SV-W-324-2026-07-28-Frederick-hail",
   "lat": 39.35333333333334,
   "lon": -77.11111111111111,
   "zip": "",
   "city": "",
   "date": "2026-07-28",
   "county": "Frederick",
   "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 LWX on 2026-07-28. Duration: 54 min. Counties: Baltimore, Howard, Carroll, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #324 (54 min)",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-324"
  },
  {
   "id": "iem-202607281936-hail-39.61--77.77",
   "lat": 39.61,
   "lon": -77.77,
   "zip": "",
   "city": "Halfway",
   "date": "2026-07-28",
   "county": "Washington",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "HAIL reported near Halfway, MD. Hail size: 1\".",
   "sourceDetail": "NWS LWX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "nws-alert-e344bc3cc02d2157.001-Frederic-wind-2026-07-21",
   "zip": "",
   "city": "",
   "date": "2026-07-21",
   "county": "Frederick",
   "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 Frederick. Severe Thunderstorm Watch issued July 21 at 2:47PM EDT until July 21 at 10:00PM EDT by NWS Baltimore MD/Washington DC",
   "sourceDetail": "NWS Baltimore MD/Washington DC — Severe Thunderstorm Watch",
   "evidenceLevel": "warning",
   "originStation": "Baltimore MD/Washington DC Weather Station",
   "warningProductKey": "LWX-SV-A-509"
  },
  {
   "id": "ww-LWX-SV-W-269-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 49 min. Counties: Frederick, Carroll, Montgomery, Howard, Washington. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #269 (49 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-269"
  },
  {
   "id": "ww-LWX-SV-W-269-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 49 min. Counties: Frederick, Carroll, Montgomery, Howard, Washington. Storm tags: wind: 70.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #269 (49 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-269"
  },
  {
   "id": "ww-LWX-SV-W-265-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 41 min. Counties: Frederick, Carroll. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #265 (41 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-265"
  },
  {
   "id": "ww-LWX-SV-W-265-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 41 min. Counties: Frederick, Carroll. Storm tags: wind: 60.0, hail: 1.0\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #265 (41 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-265"
  },
  {
   "id": "ww-LWX-SV-W-266-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 28 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #266 (28 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-266"
  },
  {
   "id": "ww-LWX-SV-W-266-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 28 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #266 (28 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-266"
  },
  {
   "id": "ww-LWX-SV-W-262-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 33 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #262 (33 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-262"
  },
  {
   "id": "ww-LWX-SV-W-262-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 33 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #262 (33 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-262"
  },
  {
   "id": "ww-LWX-SV-W-264-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 70.0, hail: 1.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #264 (49 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-264"
  },
  {
   "id": "ww-LWX-SV-W-264-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 49 min. Counties: Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 70.0, hail: 1.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #264 (49 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.75,
   "warningProductKey": "LWX-SV-W-264"
  },
  {
   "id": "ww-LWX-SV-W-261-2026-07-18-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 50 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #261 (50 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-261"
  },
  {
   "id": "ww-LWX-SV-W-261-2026-07-18-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 LWX on 2026-07-18. Duration: 50 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #261 (50 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-261"
  },
  {
   "id": "iem-ww-LWX-TO-W-15-Frederick-tornado-2026-07-18",
   "zip": "",
   "city": "Frederick",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — TO/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-TO-W-15"
  },
  {
   "id": "iem-ww-LWX-TO-W-16-Frederick-tornado-2026-07-18",
   "zip": "",
   "city": "Frederick",
   "date": "2026-07-18",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — TO/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-TO-W-16"
  },
  {
   "id": "ww-LWX-SV-W-246-2026-07-09-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-09",
   "county": "Frederick",
   "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 LWX on 2026-07-09. Duration: 39 min. Counties: Montgomery, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #246 (39 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-246"
  },
  {
   "id": "ww-LWX-SV-W-246-2026-07-09-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-09",
   "county": "Frederick",
   "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 LWX on 2026-07-09. Duration: 39 min. Counties: Montgomery, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #246 (39 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-246"
  },
  {
   "id": "ww-LWX-SV-W-247-2026-07-09-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-09",
   "county": "Frederick",
   "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 LWX on 2026-07-09. Duration: 32 min. Counties: Carroll, Montgomery, Frederick, Howard. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #247 (32 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-247"
  },
  {
   "id": "ww-LWX-SV-W-247-2026-07-09-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-09",
   "county": "Frederick",
   "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 LWX on 2026-07-09. Duration: 32 min. Counties: Carroll, Montgomery, Frederick, Howard. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #247 (32 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-247"
  },
  {
   "id": "spc-2026-07-05-89-2306",
   "lat": 39.18,
   "lon": -77.1,
   "zip": "",
   "city": "Olney",
   "date": "2026-07-05",
   "county": "Montgomery",
   "source": "SPC Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 90,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Measured wind gust from a trained spotter at the intersection of MD-108 and Zion Rd. (LWX)",
   "sourceDetail": "Storm Prediction Center verified report",
   "windSpeedMph": 60,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-202607052306-wind-39.18--77.10",
   "lat": 39.18,
   "lon": -77.1,
   "zip": "",
   "city": "2 NNW Olney",
   "date": "2026-07-05",
   "county": "Montgomery",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "TSTM WND GST reported near 2 NNW Olney, MD. Peak gust: 69 mph.",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 69,
   "evidenceLevel": "reported"
  },
  {
   "id": "ww-LWX-SV-W-208-2026-07-04-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 30 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #208 (30 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-208"
  },
  {
   "id": "ww-LWX-SV-W-208-2026-07-04-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 30 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #208 (30 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-208"
  },
  {
   "id": "ww-LWX-SV-W-194-2026-07-04-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 27 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #194 (27 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-194"
  },
  {
   "id": "ww-LWX-SV-W-194-2026-07-04-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 27 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #194 (27 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-194"
  },
  {
   "id": "ww-LWX-SV-W-203-2026-07-04-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 30 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 80.0, hail: 1.25\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #203 (30 min)",
   "windSpeedMph": 80,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-203"
  },
  {
   "id": "ww-LWX-SV-W-203-2026-07-04-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 30 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 80.0, hail: 1.25\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #203 (30 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.25,
   "warningProductKey": "LWX-SV-W-203"
  },
  {
   "id": "ww-LWX-SV-W-202-2026-07-04-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 41 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #202 (41 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-202"
  },
  {
   "id": "ww-LWX-SV-W-202-2026-07-04-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 41 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #202 (41 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-202"
  },
  {
   "id": "ww-LWX-SV-W-201-2026-07-04-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 60 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #201 (60 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-201"
  },
  {
   "id": "ww-LWX-SV-W-201-2026-07-04-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-07-04",
   "county": "Frederick",
   "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 LWX on 2026-07-04. Duration: 60 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #201 (60 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-201"
  },
  {
   "id": "ww-LWX-SV-W-147-2026-06-14-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-14",
   "county": "Frederick",
   "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 LWX on 2026-06-14. Duration: 39 min. Counties: Baltimore, Carroll, Frederick. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #147 (39 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-147"
  },
  {
   "id": "ww-LWX-SV-W-147-2026-06-14-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-14",
   "county": "Frederick",
   "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 LWX on 2026-06-14. Duration: 39 min. Counties: Baltimore, Carroll, Frederick. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #147 (39 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-147"
  },
  {
   "id": "ww-LWX-SV-W-88-2026-06-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 45 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #88 (45 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-88"
  },
  {
   "id": "ww-LWX-SV-W-88-2026-06-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 45 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #88 (45 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-88"
  },
  {
   "id": "ww-LWX-SV-W-90-2026-06-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 42 min. Counties: Washington, Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #90 (42 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-90"
  },
  {
   "id": "ww-LWX-SV-W-90-2026-06-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 42 min. Counties: Washington, Carroll, Frederick, Howard, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #90 (42 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-90"
  },
  {
   "id": "ww-LWX-SV-W-92-2026-06-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 36 min. Counties: Anne Arundel, Baltimore, Carroll, Charles, Frederick, Howard, Montgomery, Prince George's. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #92 (36 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-92"
  },
  {
   "id": "ww-LWX-SV-W-92-2026-06-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-11",
   "county": "Frederick",
   "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 LWX on 2026-06-11. Duration: 36 min. Counties: Anne Arundel, Baltimore, Carroll, Charles, Frederick, Howard, Montgomery, Prince George's. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #92 (36 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-92"
  },
  {
   "id": "asos-bf-FDK-2026-06-11",
   "lat": 39.4176,
   "lon": -77.3743,
   "zip": "",
   "city": "FREDERICK MUNI APT",
   "date": "2026-06-11",
   "county": "Frederick",
   "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": "FREDERICK MUNI APT (FDK) recorded a 52 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — FREDERICK MUNI APT (FDK) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "ww-LWX-SV-W-75-2026-06-06-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 64 min. Counties: Carroll, Washington, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #75 (64 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-75"
  },
  {
   "id": "ww-LWX-SV-W-75-2026-06-06-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 64 min. Counties: Carroll, Washington, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #75 (64 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-75"
  },
  {
   "id": "ww-LWX-SV-W-74-2026-06-06-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 46 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #74 (46 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-74"
  },
  {
   "id": "ww-LWX-SV-W-74-2026-06-06-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 46 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #74 (46 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-74"
  },
  {
   "id": "ww-LWX-SV-W-78-2026-06-06-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 48 min. Counties: Howard, Montgomery, Baltimore, Frederick, Carroll. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #78 (48 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-78"
  },
  {
   "id": "ww-LWX-SV-W-78-2026-06-06-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 48 min. Counties: Howard, Montgomery, Baltimore, Frederick, Carroll. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #78 (48 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-78"
  },
  {
   "id": "ww-LWX-SV-W-77-2026-06-06-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 54 min. Counties: Harford, Baltimore, Carroll, Cecil, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #77 (54 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-77"
  },
  {
   "id": "ww-LWX-SV-W-77-2026-06-06-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 54 min. Counties: Harford, Baltimore, Carroll, Cecil, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #77 (54 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-77"
  },
  {
   "id": "ww-LWX-SV-W-76-2026-06-06-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 58 min. Counties: Washington, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #76 (58 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-76"
  },
  {
   "id": "ww-LWX-SV-W-76-2026-06-06-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-06-06",
   "county": "Frederick",
   "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 LWX on 2026-06-06. Duration: 58 min. Counties: Washington, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #76 (58 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-76"
  },
  {
   "id": "asos-bf-FDK-2026-06-06",
   "lat": 39.4176,
   "lon": -77.3743,
   "zip": "",
   "city": "FREDERICK MUNI APT",
   "date": "2026-06-06",
   "county": "Frederick",
   "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": "FREDERICK MUNI APT (FDK) recorded a 52 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — FREDERICK MUNI APT (FDK) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-06-06",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-06-06",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 51 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "ww-LWX-SV-W-55-2026-05-20-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-05-20",
   "county": "Frederick",
   "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 LWX on 2026-05-20. Duration: 44 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #55 (44 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-55"
  },
  {
   "id": "ww-LWX-SV-W-55-2026-05-20-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-05-20",
   "county": "Frederick",
   "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 LWX on 2026-05-20. Duration: 44 min. Counties: Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #55 (44 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-55"
  },
  {
   "id": "ww-LWX-SV-W-59-2026-05-20-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-05-20",
   "county": "Frederick",
   "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 LWX on 2026-05-20. Duration: 34 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #59 (34 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-59"
  },
  {
   "id": "ww-LWX-SV-W-59-2026-05-20-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-05-20",
   "county": "Frederick",
   "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 LWX on 2026-05-20. Duration: 34 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #59 (34 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-59"
  },
  {
   "id": "ncei-1325886-2026-05-20",
   "lon": 212092,
   "zip": "",
   "city": "MT VILLE",
   "date": "2026-05-20",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Trees blew down along US-15 at Mountville Road.",
   "sourceDetail": "Verified by Department of Highways — NCEI Event #1325886",
   "windSpeedMph": 52,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ncei-1325887-2026-05-20",
   "lon": 212092,
   "zip": "",
   "city": "DOUBS",
   "date": "2026-05-20",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Trees blew down along US-15 at MD-464 Point of Rocks Road.",
   "sourceDetail": "Verified by Department of Highways — NCEI Event #1325887",
   "windSpeedMph": 52,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ncei-1325888-2026-05-20",
   "lon": 212092,
   "zip": "",
   "city": "FREDERICK",
   "date": "2026-05-20",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Multiple trees blew down on Monocacy Boulevard near South Market Drive.",
   "sourceDetail": "Verified by 911 Call Center — NCEI Event #1325888",
   "windSpeedMph": 52,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ncei-1325890-2026-05-20",
   "lon": 212092,
   "zip": "",
   "city": "JOHNSVILLE",
   "date": "2026-05-20",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Several large tree branches snapped and a flagpole bent along Coppermine Road in Union Bridge.",
   "sourceDetail": "Verified by Trained Spotter — NCEI Event #1325890",
   "windSpeedMph": 52,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ww-LWX-SV-W-42-2026-05-13-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-05-13",
   "county": "Frederick",
   "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 LWX on 2026-05-13. Duration: 34 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #42 (34 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-42"
  },
  {
   "id": "ww-LWX-SV-W-42-2026-05-13-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-05-13",
   "county": "Frederick",
   "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 LWX on 2026-05-13. Duration: 34 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 1.0\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #42 (34 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "LWX-SV-W-42"
  },
  {
   "id": "asos-bf-RSP-2026-05-13",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-05-13",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 51 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-04-19",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-04-19",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 54 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 54,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-04-05",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-04-05",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 52 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202604012256-hail-39.61--77.80",
   "lat": 39.61,
   "lon": -77.8,
   "zip": "",
   "city": "1 W Halfway",
   "date": "2026-04-01",
   "county": "Washington",
   "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 Halfway, MD. Hail size: 1\".",
   "sourceDetail": "NWS LWX — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "asos-bf-RSP-2026-03-23",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-03-23",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 53 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-03-17",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-03-17",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 58 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "ww-LWX-SV-W-18-2026-03-16-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 17 min. Counties: Frederick, Montgomery. Storm tags: wind: 70.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #18 (17 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-18"
  },
  {
   "id": "ww-LWX-SV-W-18-2026-03-16-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 17 min. Counties: Frederick, Montgomery. Storm tags: wind: 70.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #18 (17 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-18"
  },
  {
   "id": "ww-LWX-SV-W-29-2026-03-16-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 42 min. Counties: Frederick, Anne Arundel, Baltimore, Carroll, Charles, Howard, Montgomery, Prince George's. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #29 (42 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-29"
  },
  {
   "id": "ww-LWX-SV-W-29-2026-03-16-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 42 min. Counties: Frederick, Anne Arundel, Baltimore, Carroll, Charles, Howard, Montgomery, Prince George's. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #29 (42 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-29"
  },
  {
   "id": "ww-LWX-SV-W-19-2026-03-16-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 50 min. Counties: Frederick, Baltimore, Montgomery, Washington, Carroll, Howard. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #19 (50 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-19"
  },
  {
   "id": "ww-LWX-SV-W-19-2026-03-16-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 50 min. Counties: Frederick, Baltimore, Montgomery, Washington, Carroll, Howard. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #19 (50 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-19"
  },
  {
   "id": "ww-LWX-SV-W-16-2026-03-16-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 48 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 70.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #16 (48 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-16"
  },
  {
   "id": "ww-LWX-SV-W-16-2026-03-16-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 LWX on 2026-03-16. Duration: 48 min. Counties: Frederick, Montgomery, Washington. Storm tags: wind: 70.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #16 (48 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-16"
  },
  {
   "id": "iem-ww-LWX-TO-W-8-Frederick-tornado-2026-03-16",
   "zip": "",
   "city": "Frederick",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — TO/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-TO-W-8"
  },
  {
   "id": "iem-ww-LWX-TO-W-10-Frederick-tornado-2026-03-16",
   "zip": "",
   "city": "Frederick",
   "date": "2026-03-16",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — TO/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-TO-W-10"
  },
  {
   "id": "asos-bf-RSP-2026-03-16",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-03-16",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 64 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 64,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-geo-2026-03-16T16:02:00Z-tornado-39.56--77.11",
   "lat": 39.56,
   "lon": -77.11,
   "zip": "",
   "city": "2 ESE Linwood",
   "date": "2026-03-16",
   "county": "Carroll",
   "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 ESE Linwood, MD. NWS Storm Survey confirms EF-0 tornado touchdown near New Windsor with estimated peak winds of 80 mph, maximum path width of 150 yards, and a path length of 1.68 miles.",
   "sourceDetail": "NWS LWX — NWS Storm Survey via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-202603170047-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 WNW Thurmont",
   "date": "2026-03-16",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 WNW Thurmont, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202603170244-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 WNW Thurmont",
   "date": "2026-03-16",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 WNW Thurmont, MD. Peak gust: 74 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 74,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-03-16-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-03-16",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "TSTM WND GST reported near 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-03-13",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-03-13",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 53 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-03-12",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-03-12",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 61 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "ncei-1311461-2026-03-11",
   "lon": 210267,
   "zip": "",
   "city": "WOODSBORO",
   "date": "2026-03-11",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "A barn roof blew off and wires blew down in the 10400 block of MD-194 Woodsboro Pike.",
   "sourceDetail": "Verified by Emergency Manager — NCEI Event #1311461",
   "windSpeedMph": 56,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ncei-1311464-2026-03-11",
   "lon": 210267,
   "zip": "",
   "city": "URBANA",
   "date": "2026-03-11",
   "county": "Frederick",
   "source": "NCEI Storm Events Database",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "A tree blew down along Linthicum Road.",
   "sourceDetail": "Verified by 911 Call Center — NCEI Event #1311464",
   "windSpeedMph": 52,
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "ww-LWX-SV-W-7-2026-03-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 35 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #7 (35 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-7"
  },
  {
   "id": "ww-LWX-SV-W-7-2026-03-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 35 min. Counties: Carroll, Frederick. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #7 (35 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-7"
  },
  {
   "id": "ww-LWX-SV-W-8-2026-03-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 35 min. Counties: Montgomery, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #8 (35 min)",
   "windSpeedMph": 70,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-8"
  },
  {
   "id": "ww-LWX-SV-W-8-2026-03-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 35 min. Counties: Montgomery, Frederick. Storm tags: wind: 70.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #8 (35 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-8"
  },
  {
   "id": "ww-LWX-SV-W-6-2026-03-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 51 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #6 (51 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-6"
  },
  {
   "id": "ww-LWX-SV-W-6-2026-03-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 51 min. Counties: Carroll, Frederick, Washington. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #6 (51 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-6"
  },
  {
   "id": "ww-LWX-SV-W-9-2026-03-11-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 34 min. Counties: Howard, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #9 (34 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-9"
  },
  {
   "id": "ww-LWX-SV-W-9-2026-03-11-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 LWX on 2026-03-11. Duration: 34 min. Counties: Howard, Frederick, Montgomery. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #9 (34 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-9"
  },
  {
   "id": "iem-ww-LWX-TO-W-1-Frederick-tornado-2026-03-11",
   "zip": "",
   "city": "Frederick",
   "date": "2026-03-11",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — TO/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-TO-W-1"
  },
  {
   "id": "iem-geo-2026-03-11T23:06:00Z-tornado-39.33--77.00",
   "lat": 39.33,
   "lon": -77,
   "zip": "",
   "city": "2 S Gaither",
   "date": "2026-03-11",
   "county": "Howard",
   "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 S Gaither, MD. National Weather Service Storm Survey confirms a brief EF-1 tornado occurred in Cooksville, MD from approximately 7:06PM to 7:07PM. Maximum wind is estimated at 90 mph. Path length is 0.4 miles, and a 100 yard max width.",
   "sourceDetail": "NWS LWX — NWS Storm Survey via Iowa Mesonet (GeoJSON)",
   "evidenceLevel": "reported"
  },
  {
   "id": "asos-bf-RSP-2026-02-24",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-02-24",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 61 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-02-11",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-02-11",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 54 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 54,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-02-08",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-02-08",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 51 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2026-02-07",
   "county": "Carroll",
   "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 1 N Watersville",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 72,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.36--77.58",
   "lat": 39.36,
   "lon": -77.58,
   "zip": "",
   "city": "Us-340 At Md-180",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 Us-340 At Md-180",
   "sourceDetail": "NWS LWX — Mesonet via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602071202-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 77 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 77,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602071309-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 72 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 72,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602071450-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2026-02-07",
   "county": "Carroll",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 1 N Watersville, MD. Peak gust: 83 mph.",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 83,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-202602071822-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602071839-wind-39.36--77.58",
   "lat": 39.36,
   "lon": -77.58,
   "zip": "",
   "city": "Us-340 At Md-180",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 Us-340 At Md-180, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — Mesonet via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602071855-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 71 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 71,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202602072123-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 70 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 70,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-LWX-HW-W-1-Frederick-wind-2026-02-07",
   "zip": "",
   "city": "Frederick",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — HW/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-HW-W-1"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-02-07-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-02-07",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 62,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-01-26",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-01-26",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 55 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 55,
   "evidenceLevel": "observed"
  },
  {
   "id": "fema-3634-Frederick",
   "zip": "",
   "city": "Frederick",
   "date": "2026-01-23",
   "county": "Frederick",
   "source": "FEMA Declaration",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Federal disaster declaration: SEVERE WINTER STORM",
   "sourceDetail": "FEMA DR-3634: SEVERE WINTER STORM",
   "evidenceLevel": "official_backfill"
  },
  {
   "id": "asos-bf-RSP-2026-01-16",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-01-16",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 51 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-01-15",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-01-15",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 59 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 59,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202601150856-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2026-01-15",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 68 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 68,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-01-11",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-01-11",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 63 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2026-01-01",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2026-01-01",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 51 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-30-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300544-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 76 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 76,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300629-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 87 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 87,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300705-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 83 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 83,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300845-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 70 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 70,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300858-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512301047-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 82 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 82,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512301105-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 72 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 72,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-30-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 66,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-30-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-30-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-30-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-30",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 71,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.53--77.26",
   "lat": 39.53,
   "lon": -77.26,
   "zip": "",
   "city": "3 E Woodsboro",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 E Woodsboro",
   "sourceDetail": "NWS LWX — Mesonet via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512291754-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 78 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 78,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512291757-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 70 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 70,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512292025-wind-39.53--77.26",
   "lat": 39.53,
   "lon": -77.26,
   "zip": "",
   "city": "3 E Woodsboro",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 E Woodsboro, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — Mesonet via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512292238-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 72 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 72,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512292313-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "severe",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 79 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 79,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300020-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 69 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 69,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512300100-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 68,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 63,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-29-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-29",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-12-21",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-12-21",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 53 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "ww-LWX-SV-W-379-2025-12-19-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 LWX on 2025-12-19. Duration: 33 min. Counties: Cecil, Harford, Frederick. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #379 (33 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-379"
  },
  {
   "id": "ww-LWX-SV-W-379-2025-12-19-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 LWX on 2025-12-19. Duration: 33 min. Counties: Cecil, Harford, Frederick. Storm tags: wind: 60.0, hail: 0.75\", tornado: POSSIBLE. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #379 (33 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-379"
  },
  {
   "id": "asos-bf-RSP-2025-12-19",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-12-19",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 64 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 64,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512190847-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 70 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 70,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512191729-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 WNW Thurmont",
   "date": "2025-12-19",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 WNW Thurmont, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512191915-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 69 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 69,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512200015-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 71 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 71,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202512200327-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 74 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 74,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-DMW-2025-12-19",
   "lat": 39.6083,
   "lon": -77.0077,
   "zip": "",
   "city": "Westminster",
   "date": "2025-12-19",
   "county": "Carroll",
   "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": "Westminster (DMW) recorded a 55 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Westminster (DMW) [365d backfill 2026-08]",
   "windSpeedMph": 55,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-ww-LWX-HW-W-4-Frederick-wind-2025-12-19",
   "zip": "",
   "city": "Frederick",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 Frederick.",
   "sourceDetail": "NWS LWX — HW/W",
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-HW-W-4"
  },
  {
   "id": "iem-lsr-2025-12-19-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 61,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-19-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-19-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-12-19-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-12-19",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 62,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-12-14",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-12-14",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 52 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-12-11",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-12-11",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 53 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 53,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-11-27",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-11-27",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 52 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-11-26",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-11-26",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 60 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202511270152-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-11-26",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 68 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 68,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202511270406-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-11-26",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 69 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 69,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-11-26-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-11-26",
   "county": "Frederick",
   "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 3 SSW Sabillasville",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 59,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-RSP-2025-11-16",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-11-16",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 60 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 60,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-11-16-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2025-11-16",
   "county": "Carroll",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Measured on personal weather station",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 61,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-202511161254-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 SSW Sabillasville",
   "date": "2025-11-16",
   "county": "Frederick",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 3 SSW Sabillasville, MD. Peak gust: 69 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 69,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202511161644-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2025-11-16",
   "county": "Carroll",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "NON-TSTM WND GST reported near 1 N Watersville, MD. Peak gust: 70 mph.",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 70,
   "evidenceLevel": "reported"
  },
  {
   "id": "asos-bf-RSP-2025-11-11",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-11-11",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 56 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 56,
   "evidenceLevel": "observed"
  },
  {
   "id": "ww-LWX-SV-W-377-2025-11-05-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2025-11-05",
   "county": "Frederick",
   "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 LWX on 2025-11-05. Duration: 52 min. Counties: Baltimore, Carroll, Frederick, Harford. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #377 (52 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-377"
  },
  {
   "id": "ww-LWX-SV-W-377-2025-11-05-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2025-11-05",
   "county": "Frederick",
   "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 LWX on 2025-11-05. Duration: 52 min. Counties: Baltimore, Carroll, Frederick, Harford. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #377 (52 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-377"
  },
  {
   "id": "ww-LWX-SV-W-376-2025-11-05-Frederick-wind",
   "zip": "",
   "city": "",
   "date": "2025-11-05",
   "county": "Frederick",
   "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 LWX on 2025-11-05. Duration: 49 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #376 (49 min)",
   "windSpeedMph": 60,
   "evidenceLevel": "warning",
   "warningProductKey": "LWX-SV-W-376"
  },
  {
   "id": "ww-LWX-SV-W-376-2025-11-05-Frederick-hail",
   "zip": "",
   "city": "",
   "date": "2025-11-05",
   "county": "Frederick",
   "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 LWX on 2025-11-05. Duration: 49 min. Counties: Washington, Frederick. Storm tags: wind: 60.0, hail: 0.75\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS LWX — Severe Thunderstorm Warning #376 (49 min)",
   "evidenceLevel": "warning",
   "hailSizeInches": 0.75,
   "warningProductKey": "LWX-SV-W-376"
  },
  {
   "id": "asos-bf-RSP-2025-11-05",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-11-05",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 59 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 59,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-11-05-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2025-11-05",
   "county": "Carroll",
   "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": "A wind gust of 50 knots (58 MPH) was measured by a trained spotter's personal weather station near Mount Airy.",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "reported"
  },
  {
   "id": "iem-202511060208-wind-39.65--77.47",
   "lat": 39.65,
   "lon": -77.47,
   "zip": "",
   "city": "3 WNW Thurmont",
   "date": "2025-11-05",
   "county": "Frederick",
   "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 WNW Thurmont, MD. Peak gust: 68 mph.",
   "sourceDetail": "NWS LWX — AWOS via Iowa Mesonet",
   "windSpeedMph": 68,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-202511060242-wind-39.38--77.10",
   "lat": 39.38,
   "lon": -77.1,
   "zip": "",
   "city": "1 N Watersville",
   "date": "2025-11-05",
   "county": "Carroll",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "TSTM WND GST reported near 1 N Watersville, MD. Peak gust: 67 mph.",
   "sourceDetail": "NWS LWX — Trained Spotter via Iowa Mesonet",
   "windSpeedMph": 67,
   "evidenceLevel": "reported"
  },
  {
   "id": "asos-bf-RSP-2025-10-31",
   "lat": 39.645,
   "lon": -77.468,
   "zip": "",
   "city": "Camp David",
   "date": "2025-10-31",
   "county": "Frederick",
   "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": "Camp David (RSP) recorded a 56 mph gust.",
   "sourceDetail": "MD_ASOS automated observation — Camp David (RSP) [365d backfill 2026-08]",
   "windSpeedMph": 56,
   "evidenceLevel": "observed"
  }
 ]
}