NOAA NWS / Event history

Severe Thunderstorm Warning issued October 21 at 7:32AM MST until October 21 at 8:00AM MST by NWS Flagstaff AZ

Severe Thunderstorm Warning · Yavapai, AZ. Severe; observed; urgency: immediate.

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Bulletin issued: 21 October 2026 at 14:32 UTC
First saved by us: 21 October 2026 at 14:40 UTC
Last included in a daily record: 21 October 2026
The linked daily edition preserves what we captured that UTC day; this event page is not a live warning.
Source classification: Severe · Source alert

A recent feed check does not mean a new observation. This page preserves source records; it does not establish current safety or warning status.

Issuer / area: NWS Flagstaff AZ · Yavapai, AZ
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 21 October 2026 at 15:00 UTC
Forecast onset / end: 21 October 2026 at 14:32 UTC / 21 October 2026 at 15:00 UTC

Archived official description

SVRFGZ The National Weather Service in Flagstaff has issued a * Severe Thunderstorm Warning for... Yavapai County in west central Arizona... * Until 800 AM MST. * At 732 AM MST, a severe thunderstorm was located near Ponderosa Park, or 10 miles south of Prescott, moving northeast at 35 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Prescott Valley, Prescott, Dewey-Humboldt, Wilhoit, Ponderosa Park, Groom Creek, Downtown Prescott, Walker, Potato Patch, Oak Knoll Village, Whipple, Copper Basin, Palace Station, Wildwood Estates, Embry-Riddle Aeronautical University, Prescott Rodeo Grounds, Rancho Vista Estates and Mt. Union. This includes the following highways... State Route 69 between mile markers 283 and 296. State Route 89 between mile markers 295 and 320. State Route 89A between mile markers 318 and 320. This includes the following recreation areas and campgrounds... White Spar Campground, Upper Wolf Creek Group Campground, Lower Wolf Creek Campground, Lynx Campground, Eagle Ridge Group Campground, Hilltop Campground, Wolf Creek Falls, Acker Park, AC Williams Granite Creek Park, Watson Lake Park and Goldwater Lake Park. This includes the following swimming holes... Wolf Creek Falls.

Instructions in this archived message

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.

The saved record

What changed

0 updates · 1 first record

Each update compares two versions we saved. This may not include every update from the source. A missing report does not mean an event has ended.

First saved record · 21 October 2026 at 14:40 UTC

Saved by us

21 October 2026 at 14:40 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 21 at 7:32AM MST until October 21 at 8:00AM MST by NWS Flagstaff AZ. We have no earlier saved version to compare.

Bulletin issued: 21 October 2026 at 14:32 UTC

View saved version 1

Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

{
  "id": "nws:276e11e6f60554f507be8762",
  "authorityId": "urn:oid:2.49.0.1.840.0.8e990abae9213073c17f8014636e2f2075b6ae40.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 7:32AM MST until October 21 at 8:00AM MST by NWS Flagstaff AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T14:32:00.000Z",
  "issuedAt": "2026-10-21T14:32:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T14:32:00.000Z",
  "onsetAt": "2026-10-21T14:32:00.000Z",
  "expiresAt": "2026-10-21T15:00:00.000Z",
  "forecastEndAt": "2026-10-21T15:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Yavapai, AZ",
  "coordinates": null,
  "issuer": "NWS Flagstaff AZ",
  "summary": "Severe Thunderstorm Warning · Yavapai, AZ. Severe; observed; urgency: immediate.",
  "description": "SVRFGZ\n\nThe National Weather Service in Flagstaff has issued a\n\n* Severe Thunderstorm Warning for...\nYavapai County in west central Arizona...\n\n* Until 800 AM MST.\n\n* At 732 AM MST, a severe thunderstorm was located near Ponderosa\nPark, or 10 miles south of Prescott, moving northeast at 35 mph.\n\nHAZARD...Half dollar size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Damage to vehicles is expected.\n\n* Locations impacted include...\nPrescott Valley, Prescott, Dewey-Humboldt, Wilhoit, Ponderosa Park,\nGroom Creek, Downtown Prescott, Walker, Potato Patch, Oak Knoll\nVillage, Whipple, Copper Basin, Palace Station, Wildwood Estates,\nEmbry-Riddle Aeronautical University, Prescott Rodeo Grounds,\nRancho Vista Estates and Mt. Union.\n\nThis includes the following highways...\nState Route 69 between mile markers 283 and 296. State Route 89\nbetween mile markers 295 and 320. State Route 89A between mile\nmarkers 318 and 320.\n\nThis includes the following recreation areas and campgrounds...\nWhite Spar Campground, Upper Wolf Creek Group Campground, Lower Wolf\nCreek Campground, Lynx Campground, Eagle Ridge Group Campground,\nHilltop Campground, Wolf Creek Falls, Acker Park, AC Williams Granite\nCreek Park, Watson Lake Park and Goldwater Lake Park.\n\nThis includes the following swimming holes...\nWolf Creek Falls.",
  "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing large hail.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8e990abae9213073c17f8014636e2f2075b6ae40.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

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