Severe Thunderstorm Warning issued October 21 at 8:40PM MST until October 21 at 9:00PM MST by NWS Flagstaff AZ

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1. Saved by us

   22 October 2026 at 03:55 UTC

   Version 2

   Source status changed

   Title

   Before

   Severe Thunderstorm Warning issued October 21 at 8:29PM MST until October 21 at 9:00PM MST by NWS Flagstaff AZ

   After

   Severe Thunderstorm Warning issued October 21 at 8:40PM MST until October 21 at 9:00PM MST by NWS Flagstaff AZ

   Source updated

   Before

   22 October 2026 at 03:29 UTC

   After

   22 October 2026 at 03:40 UTC

   Effective from

   Before

   22 October 2026 at 03:29 UTC

   After

   22 October 2026 at 03:40 UTC

   Forecast onset

   Before

   22 October 2026 at 03:29 UTC

   After

   22 October 2026 at 03:40 UTC

   Message type

   Before

   Alert

   After

   Update

   Source status

   Before

   Source alert

   After

   Source update

   Official description

   Before

   SVRFGZ The National Weather Service in Flagstaff has issued a * Severe Thunderstorm Warning for... Navajo County in north central Arizona... Apache County in northeastern Arizona... * Until 900 PM MST /1000 PM MDT/. * At 829 PM MST /929 PM MDT/, a severe thunderstorm was located 7 miles northeast of Sun Valley, or 15 miles northeast of Holbrook, moving northeast at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Sun Valley, Petrified Forest National Park, Petrified Forest N.P. Headquarters and Petrifi…

   After

   At 840 PM MST /940 PM MDT/, a severe thunderstorm was located 14 miles northeast of Sun Valley, or 22 miles northeast of Holbrook, moving northeast at 40 mph. HAZARD...Golf ball size 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... Sun Valley, Petrified Forest National Park, Petrified Forest N.P. Headquarters and Petrifi…

   Official instructions

   Before

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

   After

   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.

   External source link

   Before

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1c5952f3fb046b6cb2d66a32e05963edf0096b51.001.1

   After

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.70ab6df0043dd073ee2c80c3fd9054d25185944b.001.1

   Bulletin issued: 22 October 2026 at 03:40 UTC

   View saved version 2

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

   {
     "id": "nws:4a9db78305e9cd2fdf3c5613",
     "authorityId": "urn:oid:2.49.0.1.840.0.70ab6df0043dd073ee2c80c3fd9054d25185944b.001.1",
     "sender": "w-nws.webmaster@noaa.gov",
     "references": [
       {
         "identifier": "urn:oid:2.49.0.1.840.0.1c5952f3fb046b6cb2d66a32e05963edf0096b51.001.1",
         "sender": "w-nws.webmaster@noaa.gov"
       }
     ],
     "category": "weather",
     "title": "Severe Thunderstorm Warning issued October 21 at 8:40PM MST until October 21 at 9:00PM MST by NWS Flagstaff AZ",
     "eventType": "Severe Thunderstorm Warning",
     "occurredAt": "2026-10-22T03:40:00.000Z",
     "issuedAt": "2026-10-22T03:40:00.000Z",
     "timeBasis": "Bulletin issued",
     "effectiveAt": "2026-10-22T03:40:00.000Z",
     "onsetAt": "2026-10-22T03:40:00.000Z",
     "expiresAt": "2026-10-22T04:00:00.000Z",
     "forecastEndAt": "2026-10-22T04:00:00.000Z",
     "severity": "Severe",
     "urgency": "Immediate",
     "certainty": "Observed",
     "messageType": "Update",
     "status": "Source update",
     "place": "Apache, AZ; Navajo, AZ",
     "coordinates": null,
     "issuer": "NWS Flagstaff AZ",
     "summary": "Severe Thunderstorm Warning · Apache, AZ; Navajo, AZ. Severe; observed; urgency: immediate.",
     "description": "At 840 PM MST /940 PM MDT/, a severe thunderstorm was located 14\nmiles northeast of Sun Valley, or 22 miles northeast of Holbrook,\nmoving northeast at 40 mph.\n\nHAZARD...Golf ball size 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...\nSun Valley, Petrified Forest National Park, Petrified Forest N.P.\nHeadquarters and Petrified Forest National Wilderness Area.\n\nThis includes the following highways...\nInterstate 40 between mile markers 298 and 316. State Route 77\nbetween mile markers 405 and 408.",
     "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.",
     "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.70ab6df0043dd073ee2c80c3fd9054d25185944b.001.1",
     "source": "nws",
     "sourceName": "NOAA NWS"
   }

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