{
 "dataset": "Stockton, CA storm events — 12-month window, 25-mile radius plus San Joaquin 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": "2026-09-20T14:15:26.732+00:00",
 "window_days": 365,
 "schema_version": "2.0.0",
 "event_count": 25,
 "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": "asos-C83-2026-08-31",
   "lat": 37.8276,
   "lon": -121.6244,
   "zip": "",
   "city": "Byron",
   "date": "2026-08-31",
   "county": "Contra Costa",
   "source": "IEM ASOS Station",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 95,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Byron (C83): 51 mph gust at M.",
   "sourceDetail": "CA_ASOS automated observation — Byron (C83) — peak at M",
   "windSpeedMph": 51,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-C83-2026-07-07",
   "lat": 37.8276,
   "lon": -121.6244,
   "zip": "",
   "city": "Byron",
   "date": "2026-07-07",
   "county": "Contra Costa",
   "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": "Byron (C83) recorded a 54 mph gust.",
   "sourceDetail": "CA_ASOS automated observation — Byron (C83) [365d backfill 2026-08]",
   "windSpeedMph": 54,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-C83-2026-06-26",
   "lat": 37.8276,
   "lon": -121.6244,
   "zip": "",
   "city": "Byron",
   "date": "2026-06-26",
   "county": "Contra Costa",
   "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": "Byron (C83) recorded a 55 mph gust.",
   "sourceDetail": "CA_ASOS automated observation — Byron (C83) [365d backfill 2026-08]",
   "windSpeedMph": 55,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2026-04-10-hail-37.74--121.13",
   "lat": 37.74,
   "lon": -121.13,
   "zip": "",
   "city": "Ripon",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Public report of 1 inch hail_ relayed via broadcast media. Time estimated by radar.",
   "sourceDetail": "NWS STO — Public via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1
  },
  {
   "id": "iem-lsr-2026-04-10-hail-38.16--121.69",
   "lat": 38.16,
   "lon": -121.69,
   "zip": "",
   "city": "Rio Vista",
   "date": "2026-04-10",
   "county": "Solano",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.92,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Trained spotter reports 1.5 inch / ping pong hail in Rio Vista.",
   "sourceDetail": "NWS STO — Trained Spotter via Iowa Mesonet",
   "evidenceLevel": "reported",
   "hailSizeInches": 1.5
  },
  {
   "id": "iem-ww-STO-SV-W-16-San Joaquin-wind-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-16"
  },
  {
   "id": "iem-ww-STO-SV-W-16-San Joaquin-hail-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "STO-SV-W-16"
  },
  {
   "id": "iem-ww-STO-SV-W-22-San Joaquin-wind-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-22"
  },
  {
   "id": "iem-ww-STO-SV-W-22-San Joaquin-hail-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "STO-SV-W-22"
  },
  {
   "id": "iem-ww-STO-SV-W-19-San Joaquin-wind-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-19"
  },
  {
   "id": "iem-ww-STO-SV-W-19-San Joaquin-hail-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag hail: 1.5\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.5,
   "warningProductKey": "STO-SV-W-19"
  },
  {
   "id": "iem-ww-STO-SV-W-23-San Joaquin-wind-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-23"
  },
  {
   "id": "iem-ww-STO-SV-W-23-San Joaquin-hail-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "STO-SV-W-23"
  },
  {
   "id": "iem-ww-STO-SV-W-20-San Joaquin-wind-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-20"
  },
  {
   "id": "iem-ww-STO-SV-W-20-San Joaquin-hail-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-10. Storm tag hail: 1.5\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.5,
   "warningProductKey": "STO-SV-W-20"
  },
  {
   "id": "iem-ww-STO-TO-W-1-San Joaquin-tornado-2026-04-10",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-10",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "severe",
   "eventType": "tornado",
   "confidence": 0.85,
   "damageTypes": [
    "Structural roof failure",
    "Debris penetration",
    "Complete shingle removal"
   ],
   "description": "Tornado Warning issued by NWS STO for San Joaquin on 2026-04-10. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Tornado Warning",
   "evidenceLevel": "warning",
   "warningProductKey": "STO-TO-W-1"
  },
  {
   "id": "iem-ww-STO-SV-W-13-San Joaquin-wind-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-13"
  },
  {
   "id": "iem-ww-STO-SV-W-13-San Joaquin-hail-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "STO-SV-W-13"
  },
  {
   "id": "iem-ww-STO-SV-W-14-San Joaquin-wind-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-14"
  },
  {
   "id": "iem-ww-STO-SV-W-14-San Joaquin-hail-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag hail: 1.5\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1.5,
   "warningProductKey": "STO-SV-W-14"
  },
  {
   "id": "iem-ww-STO-SV-W-12-San Joaquin-wind-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "moderate",
   "eventType": "wind",
   "confidence": 0.72,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag wind: 50 mph. This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "windSpeedMph": 50,
   "evidenceLevel": "warning",
   "warningProductKey": "STO-SV-W-12"
  },
  {
   "id": "iem-ww-STO-SV-W-12-San Joaquin-hail-2026-04-09",
   "zip": "",
   "city": "San Joaquin",
   "date": "2026-04-09",
   "county": "San Joaquin",
   "source": "IEM Watch/Warn Archive",
   "severity": "high",
   "eventType": "hail",
   "confidence": 0.72,
   "damageTypes": [
    "Shingle bruising",
    "Granule displacement",
    "Metal denting",
    "Vehicle damage"
   ],
   "description": "Severe Thunderstorm Warning issued by NWS STO for San Joaquin on 2026-04-09. Storm tag hail: 1\". This is a warning — not a confirmed event.",
   "sourceDetail": "NWS STO — Severe Thunderstorm Warning",
   "evidenceLevel": "warning",
   "hailSizeInches": 1,
   "warningProductKey": "STO-SV-W-12"
  },
  {
   "id": "asos-bf-SCK-2025-12-25",
   "lat": 37.8942,
   "lon": -121.2383,
   "zip": "",
   "city": "STOCKTON METRO",
   "date": "2025-12-25",
   "county": "San Joaquin",
   "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": "STOCKTON METRO (SCK) recorded a 52 mph gust.",
   "sourceDetail": "CA_ASOS automated observation — STOCKTON METRO (SCK) [365d backfill 2026-08]",
   "windSpeedMph": 52,
   "evidenceLevel": "observed"
  },
  {
   "id": "asos-bf-SCK-2025-12-24",
   "lat": 37.8942,
   "lon": -121.2383,
   "zip": "",
   "city": "STOCKTON METRO",
   "date": "2025-12-24",
   "county": "San Joaquin",
   "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": "STOCKTON METRO (SCK) recorded a 56 mph gust.",
   "sourceDetail": "CA_ASOS automated observation — STOCKTON METRO (SCK) [365d backfill 2026-08]",
   "windSpeedMph": 56,
   "evidenceLevel": "observed"
  },
  {
   "id": "iem-lsr-2025-11-05-wind-37.84--121.72",
   "lat": 37.84,
   "lon": -121.72,
   "zip": "",
   "city": "6 S Brentwood",
   "date": "2025-11-05",
   "county": "Contra Costa",
   "source": "IEM Local Storm Reports",
   "severity": "high",
   "eventType": "wind",
   "confidence": 0.92,
   "damageTypes": [
    "Roof shingle lift",
    "Soffit/fascia damage",
    "Tree strike risk",
    "Fence/screen damage"
   ],
   "description": "Mesonet station 080PG Byron Hills.",
   "sourceDetail": "NWS MTR — Mesonet via Iowa Mesonet",
   "windSpeedMph": 58,
   "evidenceLevel": "observed"
  }
 ]
}