NOAA NWS / Event history

Severe Thunderstorm Warning issued October 21 at 3:42PM MST until October 21 at 4:00PM MST by NWS Tucson AZ

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

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Bulletin issued: 21 October 2026 at 22:42 UTC
First saved by us: 21 October 2026 at 22:10 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 · Graham, AZ
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 21 October 2026 at 23:00 UTC
Forecast onset / end: 21 October 2026 at 22:42 UTC / 21 October 2026 at 23:00 UTC

Archived official description

At 342 PM MST, a severe thunderstorm was located 20 miles southwest of Thatcher, moving northeast at 20 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. Other locations impacted by the severe thunderstorm include Fort Grant, Bonita and Mount Graham. This includes Route 266 between mile markers 123 and 126.

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.

The saved record

What changed

3 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 3 changes

Saved by us

21 October 2026 at 22:55 UTC

Version 4

6 recorded details changed

Title: Before
Severe Thunderstorm Warning issued October 21 at 3:31PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
After
Severe Thunderstorm Warning issued October 21 at 3:42PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
Source updated: Before
21 October 2026 at 22:31 UTC
After
21 October 2026 at 22:42 UTC
Effective from: Before
21 October 2026 at 22:31 UTC
After
21 October 2026 at 22:42 UTC
Forecast onset: Before
21 October 2026 at 22:31 UTC
After
21 October 2026 at 22:42 UTC
Official description: Before
At 331 PM MST, a severe thunderstorm was located 23 miles southwest of Thatcher, moving northeast at 20 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. Other locations impacted by the severe thunderstorm include Bonita, Fort Grant and Mount Graham. This includes Route 266 between mile markers 114 and 126.
After
At 342 PM MST, a severe thunderstorm was located 20 miles southwest of Thatcher, moving northeast at 20 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. Other locations impacted by the severe thunderstorm include Fort Grant, Bonita and Mount Graham. This includes Route 266 between mile markers 123 and 126.
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.055e1e6456ffbfa094e0f0cee6c4a3e9860e3644.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9304de5fe2d898e8e2b436c73727f1f53f434b57.001.1

Bulletin issued: 21 October 2026 at 22:42 UTC

View saved version 4

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

{
  "id": "nws:6c21eb814ab6882ae98f01e3",
  "authorityId": "urn:oid:2.49.0.1.840.0.9304de5fe2d898e8e2b436c73727f1f53f434b57.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.5cef154eb23344b0328b684d50cdb3ba30b11b4f.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
      "identifier": "urn:oid:2.49.0.1.840.0.53f9082eb2ece8840260178540600429be4e7fa6.002.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
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      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 3:42PM MST until October 21 at 4:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T22:42:00.000Z",
  "issuedAt": "2026-10-21T22:42:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T22:42:00.000Z",
  "onsetAt": "2026-10-21T22:42:00.000Z",
  "expiresAt": "2026-10-21T23:00:00.000Z",
  "forecastEndAt": "2026-10-21T23:00:00.000Z",
  "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 342 PM MST, a severe thunderstorm was located 20 miles southwest\nof Thatcher, moving northeast at 20 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\nOther locations impacted by the severe thunderstorm include Fort\nGrant, Bonita and Mount Graham.\n\nThis includes Route 266 between mile markers 123 and 126.",
  "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:2.49.0.1.840.0.9304de5fe2d898e8e2b436c73727f1f53f434b57.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

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

Saved by us

21 October 2026 at 22:40 UTC

Version 3

6 recorded details changed

Title: Before
Severe Thunderstorm Warning issued October 21 at 3:18PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
After
Severe Thunderstorm Warning issued October 21 at 3:31PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
Source updated: Before
21 October 2026 at 22:18 UTC
After
21 October 2026 at 22:31 UTC
Effective from: Before
21 October 2026 at 22:18 UTC
After
21 October 2026 at 22:31 UTC
Forecast onset: Before
21 October 2026 at 22:18 UTC
After
21 October 2026 at 22:31 UTC
Official description: Before
At 318 PM MST, a severe thunderstorm was located 25 miles northwest of Willcox, moving northeast at 25 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. Other locations impacted by the severe thunderstorm include Bonita, Fort Grant and Mount Graham. This includes Route 266 between mile markers 113 and 126.
After
At 331 PM MST, a severe thunderstorm was located 23 miles southwest of Thatcher, moving northeast at 20 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. Other locations impacted by the severe thunderstorm include Bonita, Fort Grant and Mount Graham. This includes Route 266 between mile markers 114 and 126.
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.53f9082eb2ece8840260178540600429be4e7fa6.002.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.055e1e6456ffbfa094e0f0cee6c4a3e9860e3644.001.1

Bulletin issued: 21 October 2026 at 22:31 UTC

View saved version 3

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

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  "id": "nws:80f33b35ec1c6644bd10163c",
  "authorityId": "urn:oid:2.49.0.1.840.0.055e1e6456ffbfa094e0f0cee6c4a3e9860e3644.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.5cef154eb23344b0328b684d50cdb3ba30b11b4f.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
      "identifier": "urn:oid:2.49.0.1.840.0.53f9082eb2ece8840260178540600429be4e7fa6.002.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 3:31PM MST until October 21 at 4:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T22:31:00.000Z",
  "issuedAt": "2026-10-21T22:31:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T22:31:00.000Z",
  "onsetAt": "2026-10-21T22:31:00.000Z",
  "expiresAt": "2026-10-21T23:00:00.000Z",
  "forecastEndAt": "2026-10-21T23:00:00.000Z",
  "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 331 PM MST, a severe thunderstorm was located 23 miles southwest\nof Thatcher, moving northeast at 20 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\nOther locations impacted by the severe thunderstorm include Bonita,\nFort Grant and Mount Graham.\n\nThis includes Route 266 between mile markers 114 and 126.",
  "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:2.49.0.1.840.0.055e1e6456ffbfa094e0f0cee6c4a3e9860e3644.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

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

Saved by us
21 October 2026 at 22:25 UTC
Version 2
Source status changed
Title
Before
Severe Thunderstorm Warning issued October 21 at 3:04PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
After
Severe Thunderstorm Warning issued October 21 at 3:18PM MST until October 21 at 4:00PM MST by NWS Tucson AZ
Source updated
Before
21 October 2026 at 22:04 UTC
After
21 October 2026 at 22:18 UTC
Effective from
Before
21 October 2026 at 22:04 UTC
After
21 October 2026 at 22:18 UTC
Forecast onset
Before
21 October 2026 at 22:04 UTC
After
21 October 2026 at 22:18 UTC
Message type
Before
Alert
After
Update
Source status
Before
Source alert
After
Source update
Reported area
Before
Cochise, AZ; Graham, AZ
After
Graham, AZ
Source summary
Before
Severe Thunderstorm Warning · ~~Cochise, AZ;~~ Graham, AZ. Severe; observed; urgency: immediate.
After
Severe Thunderstorm Warning · Graham, 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... * Until 400 PM MST. * At 304 PM MST, a severe thunderstorm was located 24 miles northwest of Willcox, moving northeast at 25 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. * Other locations impacted by the severe thunderstorm include Bonita, Fort Grant and Mount Graham. This includes Route 26…
After
At 318 PM MST, a severe thunderstorm was located 25 miles northwest of Willcox, moving northeast at 25 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. Other locations impacted by the severe thunderstorm include Bonita, Fort Grant and Mount Graham. This includes Route 26…
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:2.49.0.1.840.0.5cef154eb23344b0328b684d50cdb3ba30b11b4f.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.53f9082eb2ece8840260178540600429be4e7fa6.002.1
Bulletin issued: 21 October 2026 at 22:18 UTC
View saved version 2
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
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Visit the external source ↗
The external page may have changed since this version was saved.

First saved record · 21 October 2026 at 22:10 UTC

Saved by us

21 October 2026 at 22:10 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 21 at 3:04PM MST until October 21 at 4:00PM MST by NWS Tucson AZ. We have no earlier saved version to compare.

Bulletin issued: 21 October 2026 at 22:04 UTC

View saved version 1

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

{
  "id": "nws:27f982e01bb066ab3cf48d19",
  "authorityId": "urn:oid:2.49.0.1.840.0.5cef154eb23344b0328b684d50cdb3ba30b11b4f.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 21 at 3:04PM MST until October 21 at 4:00PM MST by NWS Tucson AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T22:04:00.000Z",
  "issuedAt": "2026-10-21T22:04:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T22:04:00.000Z",
  "onsetAt": "2026-10-21T22:04:00.000Z",
  "expiresAt": "2026-10-21T23:00:00.000Z",
  "forecastEndAt": "2026-10-21T23:00:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Cochise, AZ; Graham, AZ",
  "coordinates": null,
  "issuer": "NWS Tucson AZ",
  "summary": "Severe Thunderstorm Warning · Cochise, AZ; Graham, 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...\n\n* Until 400 PM MST.\n\n* At 304 PM MST, a severe thunderstorm was located 24 miles northwest\nof Willcox, moving northeast at 25 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* Other locations impacted by the severe thunderstorm include Bonita,\nFort Grant and Mount Graham.\n\nThis includes Route 266 between mile markers 113 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.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5cef154eb23344b0328b684d50cdb3ba30b11b4f.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

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

Severe Thunderstorm Warning issued October 21 at 3:42PM MST until October 21 at 4:00PM MST by NWS Tucson AZ

Archived official description

Instructions in this archived message

What changed

6 recorded details changed

6 recorded details changed

Source status changed

First saved record