NOAA NWS / Event history

Severe Thunderstorm Warning issued October 21 at 2:43AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ

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

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Bulletin issued: 21 October 2026 at 09:43 UTC
First saved by us: 21 October 2026 at 09:40 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 update

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 10:00 UTC
Forecast onset / end: 21 October 2026 at 09:43 UTC / 21 October 2026 at 10:00 UTC

Archived official description

At 243 AM MST, a severe thunderstorm was located over Palace Station, or 12 miles south of Prescott, moving northeast at 50 mph. HAZARD...Two inch hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Prescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott, Walker, Potato Patch, Poland Junction, Oak Knoll Village, Palace Station, Wildwood Estates, Prescott Rodeo Grounds, Rancho Vista Estates, Mt. Union, Goldwater Lake and Lynx Lake. This includes the following highways... State Route 69 between mile markers 271 and 276. State Route 89 between mile markers 303 and 312. 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 and Goldwater Lake Park. This includes the following swimming holes... Wolf Creek Falls.

Instructions in this archived message

Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail and damaging winds. This storm is capable of producing all types of severe weather including extremely large hail, destructive straight line winds, and tornadoes. Move quickly to a safe shelter such as an interior room, a bathroom, closet or basement.

The saved record

What changed

1 update · 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.

Showing 1 change

Saved by us

21 October 2026 at 09:55 UTC

Version 2

6 recorded details changed

Title: Before
Severe Thunderstorm Warning issued October 21 at 2:36AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ
After
Severe Thunderstorm Warning issued October 21 at 2:43AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ
Source updated: Before
21 October 2026 at 09:36 UTC
After
21 October 2026 at 09:43 UTC
Effective from: Before
21 October 2026 at 09:36 UTC
After
21 October 2026 at 09:43 UTC
Forecast onset: Before
21 October 2026 at 09:36 UTC
After
21 October 2026 at 09:43 UTC
Official description: Before
At 236 AM MST, a severe thunderstorm was located 5 miles southwest of Palace Station, or 16 miles south of Prescott, moving northeast at 50 mph. HAZARD...Two inch hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Prescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott, Walker, Potato Patch, Poland Junction, Oak Knoll Village, Palace Station, Wildwood Estates, Prescott Rodeo Grounds, Rancho Vista Estates, Walnut Grove, Mt. Union, Goldwater Lake and Lynx Lake. This includes the following highways... State Route 69 between mile markers 269 and 277. State Route 89 between mile markers 301 and 312. This includes the following recreation areas and campgrounds... White Spar Campground, Upper Wolf Creek Group…
After
At 243 AM MST, a severe thunderstorm was located over Palace Station, or 12 miles south of Prescott, moving northeast at 50 mph. HAZARD...Two inch hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Prescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott, Walker, Potato Patch, Poland Junction, Oak Knoll Village, Palace Station, Wildwood Estates, Prescott Rodeo Grounds, Rancho Vista Estates, Mt. Union, Goldwater Lake and Lynx Lake. This includes the following highways... State Route 69 between mile markers 271 and 276. State Route 89 between mile markers 303 and 312. This includes the following recreation areas and campgrounds... White Spar Campground, Upper Wolf Creek Group…
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b7cc37318de5a834e3afa71b6b8e9fc8653de5e4.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5cfefb958c4b914d7e9d8c1e5482594bf1e65238.001.1

Bulletin issued: 21 October 2026 at 09:43 UTC

View saved version 2

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

{
  "id": "nws:1b38ab5ea8a8798ea48b5510",
  "authorityId": "urn:oid:2.49.0.1.840.0.5cfefb958c4b914d7e9d8c1e5482594bf1e65238.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
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      "identifier": "urn:oid:2.49.0.1.840.0.9218d016a1f1d8f4b30d2f4812b3189641d524bf.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
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    {
      "identifier": "urn:oid:2.49.0.1.840.0.b7cc37318de5a834e3afa71b6b8e9fc8653de5e4.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 2:43AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T09:43:00.000Z",
  "issuedAt": "2026-10-21T09:43:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T09:43:00.000Z",
  "onsetAt": "2026-10-21T09:43:00.000Z",
  "expiresAt": "2026-10-21T10:00:00.000Z",
  "forecastEndAt": "2026-10-21T10:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Yavapai, AZ",
  "coordinates": null,
  "issuer": "NWS Flagstaff AZ",
  "summary": "Severe Thunderstorm Warning · Yavapai, AZ. Severe; observed; urgency: immediate.",
  "description": "At 243 AM MST, a severe thunderstorm was located over Palace Station,\nor 12 miles south of Prescott, moving northeast at 50 mph.\n\nHAZARD...Two inch hail and 60 mph wind gusts.\n\nSOURCE...Radar indicated.\n\nIMPACT...People and animals outdoors will be injured. Expect hail\ndamage to roofs, siding, windows, and vehicles. Expect wind\ndamage to roofs, siding, and trees.\n\nLocations impacted include...\nPrescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott,\nWalker, Potato Patch, Poland Junction, Oak Knoll Village, Palace\nStation, Wildwood Estates, Prescott Rodeo Grounds, Rancho Vista\nEstates, Mt. Union, Goldwater Lake and Lynx Lake.\n\nThis includes the following highways...\nState Route 69 between mile markers 271 and 276. State Route 89\nbetween mile markers 303 and 312.\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 and Goldwater Lake Park.\n\nThis includes the following swimming holes...\nWolf Creek Falls.",
  "instruction": "Anyone outdoors should move to shelter inside a well-built structure\nand stay away from windows. This storm is capable of producing\ndangerous hail and damaging winds.\n\nThis storm is capable of producing all types of severe weather\nincluding extremely large hail, destructive straight line winds, and\ntornadoes. Move quickly to a safe shelter such as an interior room, a\nbathroom, closet or basement.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5cfefb958c4b914d7e9d8c1e5482594bf1e65238.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

The external page may have changed since this version was saved.

First saved record · 21 October 2026 at 09:40 UTC

Saved by us

21 October 2026 at 09:40 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 21 at 2:36AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ. We have no earlier saved version to compare.

Bulletin issued: 21 October 2026 at 09:36 UTC

View saved version 1

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

{
  "id": "nws:18e7817258e3bd4ab6a7160b",
  "authorityId": "urn:oid:2.49.0.1.840.0.b7cc37318de5a834e3afa71b6b8e9fc8653de5e4.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.9218d016a1f1d8f4b30d2f4812b3189641d524bf.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 2:36AM MST until October 21 at 3:00AM MST by NWS Flagstaff AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T09:36:00.000Z",
  "issuedAt": "2026-10-21T09:36:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T09:36:00.000Z",
  "onsetAt": "2026-10-21T09:36:00.000Z",
  "expiresAt": "2026-10-21T10:00:00.000Z",
  "forecastEndAt": "2026-10-21T10:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Yavapai, AZ",
  "coordinates": null,
  "issuer": "NWS Flagstaff AZ",
  "summary": "Severe Thunderstorm Warning · Yavapai, AZ. Severe; observed; urgency: immediate.",
  "description": "At 236 AM MST, a severe thunderstorm was located 5 miles southwest of\nPalace Station, or 16 miles south of Prescott, moving northeast at 50\nmph.\n\nHAZARD...Two inch hail and 60 mph wind gusts.\n\nSOURCE...Radar indicated.\n\nIMPACT...People and animals outdoors will be injured. Expect hail\ndamage to roofs, siding, windows, and vehicles. Expect wind\ndamage to roofs, siding, and trees.\n\nLocations impacted include...\nPrescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott,\nWalker, Potato Patch, Poland Junction, Oak Knoll Village, Palace\nStation, Wildwood Estates, Prescott Rodeo Grounds, Rancho Vista\nEstates, Walnut Grove, Mt. Union, Goldwater Lake and Lynx Lake.\n\nThis includes the following highways...\nState Route 69 between mile markers 269 and 277. State Route 89\nbetween mile markers 301 and 312.\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 and Goldwater Lake Park.\n\nThis includes the following swimming holes...\nWolf Creek Falls.",
  "instruction": "Anyone outdoors should move to shelter inside a well-built structure\nand stay away from windows. This storm is capable of producing\ndangerous hail and damaging winds.\n\nThis storm is capable of producing all types of severe weather\nincluding extremely large hail, destructive straight line winds, and\ntornadoes. Move quickly to a safe shelter such as an interior room, a\nbathroom, closet or basement.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b7cc37318de5a834e3afa71b6b8e9fc8653de5e4.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

The external page may have changed since this version was saved.