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Severe Thunderstorm Warning issued October 21 at 1:54PM MST until October 21 at 2:00PM MST by NWS Tucson AZ

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

See what changed ↓Detailed event record ↗
Bulletin issued
21 October 2026 at 20:54 UTC
First saved by us
21 October 2026 at 20:10 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 Tucson AZ · Pinal, AZ
Certainty / urgency
Observed / Immediate
Message expiry (not hazard end)
21 October 2026 at 21:00 UTC
Forecast onset / end
21 October 2026 at 20:54 UTC / 21 October 2026 at 21:00 UTC

Archived official description

At 154 PM MST, a severe thunderstorm was located near Aravaipa Canyon Wilderness, moving north at 45 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... Aravaipa Canyon Wilderness.

Instructions in this archived message

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

The saved record

What changed

2 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.

Showing 2 changes

  1. Saved by us

    Version 3

    8 recorded details changed

    Title
    Before

    Severe Thunderstorm Warning issued October 21 at 1:32PM MST until October 21 at 2:00PM MST by NWS Tucson AZ

    After

    Severe Thunderstorm Warning issued October 21 at 1:54PM MST until October 21 at 2:00PM MST by NWS Tucson AZ

    Source updated
    Before

    21 October 2026 at 20:32 UTC

    After

    21 October 2026 at 20:54 UTC

    Effective from
    Before

    21 October 2026 at 20:32 UTC

    After

    21 October 2026 at 20:54 UTC

    Forecast onset
    Before

    21 October 2026 at 20:32 UTC

    After

    21 October 2026 at 20:54 UTC

    Reported area
    Before

    Graham, AZ; Pinal, AZ

    After

    Pinal, AZ

    Source summary
    Before

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

    After

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

    Official description
    Before

    At 132 PM MST, two severe thunderstorms were located 5 and 13 miles east of San Manuel, moving north at 45 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... Mammoth, San Manuel, Aravaipa Canyon Wilderness and Klondyke. This includes Route 77 between mile markers 111 and 118.

    After

    At 154 PM MST, a severe thunderstorm was located near Aravaipa Canyon Wilderness, moving north at 45 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... Aravaipa Canyon Wilderness.

    External source link
    Before

    https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.13bd14ac679fbdc44f6d84fc0ea7d8fa475cb7b5.002.1

    After

    https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ec50e784d00f6f7950c109491aaa262abaa45d12.001.1

    Bulletin issued: 21 October 2026 at 20:54 UTC

    View saved version 3

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

    {
  "id": "nws:19960ea8a0673751afe98db7",
  "authorityId": "urn:oid:2.49.0.1.840.0.ec50e784d00f6f7950c109491aaa262abaa45d12.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.dfb65d005534948bd9f91e02efd1078850b2e78d.002.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
      "identifier": "urn:oid:2.49.0.1.840.0.55fc4adbc30dc5fc6bfb8feb252b59943b65cbb3.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
      "identifier": "urn:oid:2.49.0.1.840.0.13bd14ac679fbdc44f6d84fc0ea7d8fa475cb7b5.002.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 1:54PM MST until October 21 at 2:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T20:54:00.000Z",
  "issuedAt": "2026-10-21T20:54:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T20:54:00.000Z",
  "onsetAt": "2026-10-21T20:54:00.000Z",
  "expiresAt": "2026-10-21T21:00:00.000Z",
  "forecastEndAt": "2026-10-21T21:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Pinal, AZ",
  "coordinates": null,
  "issuer": "NWS Tucson AZ",
  "summary": "Severe Thunderstorm Warning · Pinal, AZ. Severe; observed; urgency: immediate.",
  "description": "At 154 PM MST, a severe thunderstorm was located near Aravaipa Canyon\nWilderness, moving north at 45 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is expected. Expect wind damage to\nroofs, siding, and trees.\n\nLocations impacted include...\nAravaipa Canyon Wilderness.",
  "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing damaging winds and large\nhail.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ec50e784d00f6f7950c109491aaa262abaa45d12.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}
    Visit the external source ↗

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

  2. Saved by us

    Version 2

    Source status changed

    Title
    Before

    Severe Thunderstorm Warning issued October 21 at 1:09PM MST until October 21 at 2:00PM MST by NWS Tucson AZ

    After

    Severe Thunderstorm Warning issued October 21 at 1:32PM MST until October 21 at 2:00PM MST by NWS Tucson AZ

    Source updated
    Before

    21 October 2026 at 20:09 UTC

    After

    21 October 2026 at 20:32 UTC

    Effective from
    Before

    21 October 2026 at 20:09 UTC

    After

    21 October 2026 at 20:32 UTC

    Forecast onset
    Before

    21 October 2026 at 20:09 UTC

    After

    21 October 2026 at 20:32 UTC

    Message type
    Before

    Alert

    After

    Update

    Source status
    Before

    Source alert

    After

    Source update

    Reported area
    Before

    Cochise, AZ; Graham, AZ; Pima, AZ; Pinal, AZ

    After

    Graham, AZ; Pinal, AZ

    Source summary
    Before

    Severe Thunderstorm Warning · Cochise, AZ; Graham, AZ; Pima, AZ; Pinal, AZ. Severe; observed; urgency: immediate.

    After

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

    Official description
    Before

    SVRTWC The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Northwestern Cochise County in southeastern Arizona... Southwestern Graham County in southeastern Arizona... Northeastern Pima County in southeastern Arizona... Southeastern Pinal County in southeastern Arizona... * Until 200 PM MST. * At 109 PM MST, a severe thunderstorm was located 15 miles northeast of Saguaro National Park East, moving north at 45 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... Mammoth, San Manuel, Aravaipa Canyon Wilderness, Klondyke, Redington and Cascabel. This includes Route 77 between mile markers 111 and 118.

    After

    At 132 PM MST, two severe thunderstorms were located 5 and 13 miles east of San Manuel, moving north at 45 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... Mammoth, San Manuel, Aravaipa Canyon Wilderness and Klondyke. This includes Route 77 between mile markers 111 and 118.

    External source link
    Before

    https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.55fc4adbc30dc5fc6bfb8feb252b59943b65cbb3.001.1

    After

    https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.13bd14ac679fbdc44f6d84fc0ea7d8fa475cb7b5.002.1

    Bulletin issued: 21 October 2026 at 20:32 UTC

    View saved version 2

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

    {
  "id": "nws:2a8169aedf354ea4f67df6f7",
  "authorityId": "urn:oid:2.49.0.1.840.0.13bd14ac679fbdc44f6d84fc0ea7d8fa475cb7b5.002.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.55fc4adbc30dc5fc6bfb8feb252b59943b65cbb3.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 1:32PM MST until October 21 at 2:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T20:32:00.000Z",
  "issuedAt": "2026-10-21T20:32:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T20:32:00.000Z",
  "onsetAt": "2026-10-21T20:32:00.000Z",
  "expiresAt": "2026-10-21T21:00:00.000Z",
  "forecastEndAt": "2026-10-21T21:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Graham, AZ; Pinal, AZ",
  "coordinates": null,
  "issuer": "NWS Tucson AZ",
  "summary": "Severe Thunderstorm Warning · Graham, AZ; Pinal, AZ. Severe; observed; urgency: immediate.",
  "description": "At 132 PM MST, two severe thunderstorms were located 5 and 13 miles\neast of San Manuel, moving north at 45 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is expected. Expect wind damage to\nroofs, siding, and trees.\n\nLocations impacted include...\nMammoth, San Manuel, Aravaipa Canyon Wilderness and Klondyke.\n\nThis includes Route 77 between mile markers 111 and 118.",
  "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing damaging winds and large\nhail.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.13bd14ac679fbdc44f6d84fc0ea7d8fa475cb7b5.002.1",
  "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 20:10 UTC

  1. Saved by us

    Starting point

    First saved record

    Our first saved version of Severe Thunderstorm Warning issued October 21 at 1:09PM MST until October 21 at 2:00PM MST by NWS Tucson AZ. We have no earlier saved version to compare.

    Bulletin issued: 21 October 2026 at 20:09 UTC

    View saved version 1

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

    {
  "id": "nws:3b62ccd56e14957c243b08c8",
  "authorityId": "urn:oid:2.49.0.1.840.0.55fc4adbc30dc5fc6bfb8feb252b59943b65cbb3.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 1:09PM MST until October 21 at 2:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T20:09:00.000Z",
  "issuedAt": "2026-10-21T20:09:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T20:09:00.000Z",
  "onsetAt": "2026-10-21T20:09:00.000Z",
  "expiresAt": "2026-10-21T21:00:00.000Z",
  "forecastEndAt": "2026-10-21T21:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Cochise, AZ; Graham, AZ; Pima, AZ; Pinal, AZ",
  "coordinates": null,
  "issuer": "NWS Tucson AZ",
  "summary": "Severe Thunderstorm Warning · Cochise, AZ; Graham, AZ; Pima, AZ; Pinal, AZ. Severe; observed; urgency: immediate.",
  "description": "SVRTWC\n\nThe National Weather Service in Tucson has issued a\n\n* Severe Thunderstorm Warning for...\nNorthwestern Cochise County in southeastern Arizona...\nSouthwestern Graham County in southeastern Arizona...\nNortheastern Pima County in southeastern Arizona...\nSoutheastern Pinal County in southeastern Arizona...\n\n* Until 200 PM MST.\n\n* At 109 PM MST, a severe thunderstorm was located 15 miles northeast\nof Saguaro National Park East, moving north at 45 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is expected. Expect wind damage to\nroofs, siding, and trees.\n\n* Locations impacted include...\nMammoth, San Manuel, Aravaipa Canyon Wilderness, Klondyke,\nRedington and Cascabel.\n\nThis includes Route 77 between mile markers 111 and 118.",
  "instruction": "Seek shelter inside a well-built structure and stay away from\nwindows. This storm is capable of producing damaging winds and large\nhail.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.55fc4adbc30dc5fc6bfb8feb252b59943b65cbb3.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}
    Visit the external source ↗

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