Severe Thunderstorm Warning issued October 21 at 3:55PM MST until October 21 at 4:30PM MST by NWS Tucson AZ

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1. Saved by us

   21 October 2026 at 23:10 UTC

   Version 2

   Source status changed

   Title

   Before

   Severe Thunderstorm Warning issued October 21 at 3:49PM MST until October 21 at 4:30PM MST by NWS Tucson AZ

   After

   Severe Thunderstorm Warning issued October 21 at 3:55PM MST until October 21 at 4:30PM MST by NWS Tucson AZ

   Source updated

   Before

   21 October 2026 at 22:49 UTC

   After

   21 October 2026 at 22:55 UTC

   Effective from

   Before

   21 October 2026 at 22:49 UTC

   After

   21 October 2026 at 22:55 UTC

   Forecast onset

   Before

   21 October 2026 at 22:49 UTC

   After

   21 October 2026 at 22:55 UTC

   Message type

   Before

   Alert

   After

   Update

   Source status

   Before

   Source alert

   After

   Source update

   Official description

   Before

   SVRTWC The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... South Central Graham County in southeastern Arizona... * Until 430 PM MST. * At 349 PM MST, a severe thunderstorm was located 20 miles northwest of Willcox, moving northeast at 30 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... Roper Lake State Park, Fort Grant, Bonita, Mount Graham, Frye Mesa Dam and Swift Trail Jun…

   After

   At 355 PM MST, a severe thunderstorm was located 19 miles northwest of Willcox, moving northeast at 30 mph. HAZARD...Ping pong 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... Roper Lake State Park, Fort Grant, Bonita, Mount Graham, Frye Mesa Dam and Swift Trail Jun…

   Official instructions

   Before

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

   After

   …ide a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure.

   External source link

   Before

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.fec471f3d0384d5892bea585335c16f8d49bd0c2.001.1

   After

   https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3102c49830a54d52d9522366cb026227cfb49185.001.1

   Bulletin issued: 21 October 2026 at 22:55 UTC

   View saved version 2

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

   {
     "id": "nws:d9ae11103d08b31cd0ee0133",
     "authorityId": "urn:oid:2.49.0.1.840.0.3102c49830a54d52d9522366cb026227cfb49185.001.1",
     "sender": "w-nws.webmaster@noaa.gov",
     "references": [
       {
         "identifier": "urn:oid:2.49.0.1.840.0.fec471f3d0384d5892bea585335c16f8d49bd0c2.001.1",
         "sender": "w-nws.webmaster@noaa.gov"
       }
     ],
     "category": "weather",
     "title": "Severe Thunderstorm Warning issued October 21 at 3:55PM MST until October 21 at 4:30PM MST by NWS Tucson AZ",
     "eventType": "Severe Thunderstorm Warning",
     "occurredAt": "2026-10-21T22:55:00.000Z",
     "issuedAt": "2026-10-21T22:55:00.000Z",
     "timeBasis": "Bulletin issued",
     "effectiveAt": "2026-10-21T22:55:00.000Z",
     "onsetAt": "2026-10-21T22:55:00.000Z",
     "expiresAt": "2026-10-21T23:30:00.000Z",
     "forecastEndAt": "2026-10-21T23:30:00.000Z",
     "severity": "Severe",
     "urgency": "Immediate",
     "certainty": "Observed",
     "messageType": "Update",
     "status": "Source update",
     "place": "Graham, AZ",
     "coordinates": null,
     "issuer": "NWS Tucson AZ",
     "summary": "Severe Thunderstorm Warning · Graham, AZ. Severe; observed; urgency: immediate.",
     "description": "At 355 PM MST, a severe thunderstorm was located 19 miles northwest\nof Willcox, moving northeast at 30 mph.\n\nHAZARD...Ping pong 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...\nRoper Lake State Park, Fort Grant, Bonita, Mount Graham, Frye Mesa\nDam and Swift Trail Junction.\n\nThis includes the following highways...\nRoute 191 between mile markers 105 and 115. Route 266 between mile\nmarkers 109 and 126.",
     "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing damaging winds and large\nhail.\n\nTornadoes can develop quickly from severe thunderstorms. Seek shelter\nimmediately in an interior room on the lowest floor of a well-built\nstructure.",
     "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.3102c49830a54d52d9522366cb026227cfb49185.001.1",
     "source": "nws",
     "sourceName": "NOAA NWS"
   }

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