Severe Thunderstorm Warning issued October 22 at 2:18AM MST until October 22 at 2:30AM MST by NWS Flagstaff AZ

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   22 October 2026 at 09:25 UTC

   Version 2

   Source status changed

   Title

   Before

   Severe Thunderstorm Warning issued October 22 at 2:07AM MST until October 22 at 2:30AM MST by NWS Flagstaff AZ

   After

   Severe Thunderstorm Warning issued October 22 at 2:18AM MST until October 22 at 2:30AM MST by NWS Flagstaff AZ

   Source updated

   Before

   22 October 2026 at 09:07 UTC

   After

   22 October 2026 at 09:18 UTC

   Effective from

   Before

   22 October 2026 at 09:07 UTC

   After

   22 October 2026 at 09:18 UTC

   Forecast onset

   Before

   22 October 2026 at 09:07 UTC

   After

   22 October 2026 at 09:18 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 230 AM MST /330 AM MDT/. * At 207 AM MST /307 AM MDT/, a severe thunderstorm was located 13 miles east of Sun Valley, or 20 miles east of Holbrook, moving north at 40 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Petrified Forest National Park, Petrified Forest N.P. Headquarters and Petrified Forest National Wilderness Area. This includes Interstate 40 between mile markers 304 and 316.

   After

   At 218 AM MST /318 AM MDT/, a severe thunderstorm was located 16 miles northeast of Sun Valley, or 24 miles northeast of Holbrook, moving north at 40 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Petrified Forest National Park, Petrified Forest N.P. Headquarters and Petrified Forest National Wilderness Area. This includes Interstate 40 between mile markers 305 and 316.

   External source link

   Before

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.fdac7fdce0f5c403b9da9db683b297961e31fb6f.001.1

   After

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cedd02b1b8c924fd355cc67efd7a3d4b3f987b5e.001.1

   Bulletin issued: 22 October 2026 at 09:18 UTC

   View saved version 2

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

   {
     "id": "nws:853ffd0dadbef532908334f7",
     "authorityId": "urn:oid:2.49.0.1.840.0.cedd02b1b8c924fd355cc67efd7a3d4b3f987b5e.001.1",
     "sender": "w-nws.webmaster@noaa.gov",
     "references": [
       {
         "identifier": "urn:oid:2.49.0.1.840.0.fdac7fdce0f5c403b9da9db683b297961e31fb6f.001.1",
         "sender": "w-nws.webmaster@noaa.gov"
       }
     ],
     "category": "weather",
     "title": "Severe Thunderstorm Warning issued October 22 at 2:18AM MST until October 22 at 2:30AM MST by NWS Flagstaff AZ",
     "eventType": "Severe Thunderstorm Warning",
     "occurredAt": "2026-10-22T09:18:00.000Z",
     "issuedAt": "2026-10-22T09:18:00.000Z",
     "timeBasis": "Bulletin issued",
     "effectiveAt": "2026-10-22T09:18:00.000Z",
     "onsetAt": "2026-10-22T09:18:00.000Z",
     "expiresAt": "2026-10-22T09:30:00.000Z",
     "forecastEndAt": "2026-10-22T09:30:00.000Z",
     "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 218 AM MST /318 AM MDT/, a severe thunderstorm was located 16\nmiles northeast of Sun Valley, or 24 miles northeast of Holbrook,\nmoving north at 40 mph.\n\nHAZARD...Quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Damage to vehicles is expected.\n\nLocations impacted include...\nPetrified Forest National Park, Petrified Forest N.P. Headquarters\nand Petrified Forest National Wilderness Area.\n\nThis includes Interstate 40 between mile markers 305 and 316.",
     "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing large hail.\n\nTorrential rainfall is also occurring with this storm and may lead to\nflash flooding. Do not drive your vehicle through flooded roadways.",
     "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cedd02b1b8c924fd355cc67efd7a3d4b3f987b5e.001.1",
     "source": "nws",
     "sourceName": "NOAA NWS"
   }

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