NOAA NWS / Event history

Severe Thunderstorm Warning issued October 21 at 5:13PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ

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

See what changed ↓Detailed event record ↗

Bulletin issued: 22 October 2026 at 00:13 UTC
First saved by us: 21 October 2026 at 23:55 UTC
Last included in a daily record: 22 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 Phoenix AZ · Gila, AZ; Maricopa, AZ
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 22 October 2026 at 00:30 UTC
Forecast onset / end: 22 October 2026 at 00:13 UTC / 22 October 2026 at 00:30 UTC

Archived official description

At 513 PM MST, a severe thunderstorm was located over Ballantine Trailhead, moving north at 40 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Round Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain, Sycamore Creek, Punkin Center, Tonto Basin, Four Peaks and Rio Verde. This includes the following highways... AZ Route 87 between mile markers 199 and 208. AZ Route 188 between mile markers 254 and 263.

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. Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure.

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

Saved by us

22 October 2026 at 00:25 UTC

Version 3

6 recorded details changed

Title: Before
Severe Thunderstorm Warning issued October 21 at 5:05PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ
After
Severe Thunderstorm Warning issued October 21 at 5:13PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ
Source updated: Before
22 October 2026 at 00:05 UTC
After
22 October 2026 at 00:13 UTC
Effective from: Before
22 October 2026 at 00:05 UTC
After
22 October 2026 at 00:13 UTC
Forecast onset: Before
22 October 2026 at 00:05 UTC
After
22 October 2026 at 00:13 UTC
Official description: Before
At 505 PM MST, a severe thunderstorm was located over Sugarloaf Mountain, moving north at 40 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Round Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain, Sycamore Creek, Punkin Center, Tonto Basin, Four Peaks, Rio Verde and Fort McDowell. This includes the following highways... AZ Route 87 between mile markers 197 and 206. AZ Route 188 between mile markers 254 and 263.
After
At 513 PM MST, a severe thunderstorm was located over Ballantine Trailhead, moving north at 40 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Round Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain, Sycamore Creek, Punkin Center, Tonto Basin, Four Peaks and Rio Verde. This includes the following highways... AZ Route 87 between mile markers 199 and 208. AZ Route 188 between mile markers 254 and 263.
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f43714b52cebf15a7a220433982c728de6a5d4ce.002.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7ebd2c9cea12c108ffc9189aa85a1b3e727b046f.001.1

Bulletin issued: 22 October 2026 at 00:13 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:2bc9d0e9fa5010c7f2ff8c5d",
  "authorityId": "urn:oid:2.49.0.1.840.0.7ebd2c9cea12c108ffc9189aa85a1b3e727b046f.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
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      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
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      "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 5:13PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-22T00:13:00.000Z",
  "issuedAt": "2026-10-22T00:13:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-22T00:13:00.000Z",
  "onsetAt": "2026-10-22T00:13:00.000Z",
  "expiresAt": "2026-10-22T00:30:00.000Z",
  "forecastEndAt": "2026-10-22T00:30:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Gila, AZ; Maricopa, AZ",
  "coordinates": null,
  "issuer": "NWS Phoenix AZ",
  "summary": "Severe Thunderstorm Warning · Gila, AZ; Maricopa, AZ. Severe; observed; urgency: immediate.",
  "description": "At 513 PM MST, a severe thunderstorm was located over Ballantine\nTrailhead, moving north at 40 mph.\n\nHAZARD...60 mph wind gusts and half dollar 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...\nRound Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain,\nSycamore Creek, Punkin Center, Tonto Basin, Four Peaks and Rio\nVerde.\n\nThis includes the following highways...\nAZ Route 87 between mile markers 199 and 208. AZ Route 188 between\nmile markers 254 and 263.",
  "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:2.49.0.1.840.0.7ebd2c9cea12c108ffc9189aa85a1b3e727b046f.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
22 October 2026 at 00:10 UTC
Version 2
9 recorded details changed
Title
Before
Severe Thunderstorm Warning issued October 21 at 4:52PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ
After
Severe Thunderstorm Warning issued October 21 at 5:05PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ
Source updated
Before
21 October 2026 at 23:52 UTC
After
22 October 2026 at 00:05 UTC
Effective from
Before
21 October 2026 at 23:52 UTC
After
22 October 2026 at 00:05 UTC
Forecast onset
Before
21 October 2026 at 23:52 UTC
After
22 October 2026 at 00:05 UTC
Reported area
Before
Gila, AZ; Maricopa, AZ; Pinal, AZ
After
Gila, AZ; Maricopa, AZ
Source summary
Before
Severe Thunderstorm Warning · Gila, AZ; Maricopa, ~~AZ; Pinal,~~ AZ. Severe; observed; urgency: immediate.
After
Severe Thunderstorm Warning · Gila, AZ; Maricopa, AZ. Severe; observed; urgency: immediate.
Official description
Before
At 452 PM MST, a severe thunderstorm was located over Saguaro Lake, or 8 miles south of Sugarloaf Mountain, moving north at 40 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Apache Junction, Fountain Hills, Sugarloaf Mountain, Ballantine Trailhead, Round Valley, Sunflower, Sycamore Creek, Saguaro Lake, Goldfield Ranch, Rio Verde, Salt River Tubing Recreation Area, Four Peaks, Canyon Lake, Punkin Center, Tonto Basin, Goldfield, Lost Dutchman State Park, Usery Mountain Park and Granite Reef Dam. This includes the following highways... AZ Route 87 between mile markers 185 and 194. AZ Route 202 between mile markers 21 and 24. AZ Route 188 between mile markers 254 and 263.
After
At 505 PM MST, a severe thunderstorm was located over Sugarloaf Mountain, moving north at 40 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Round Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain, Sycamore Creek, Punkin Center, Tonto Basin, Four Peaks, Rio Verde and Fort McDowell. This includes the following highways... AZ Route 87 between mile markers 197 and 206. AZ Route 188 between mile markers 254 and 263.
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:2.49.0.1.840.0.97b09b80e4f87dcf67d0912e113b112161fa9ef5.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.f43714b52cebf15a7a220433982c728de6a5d4ce.002.1
Bulletin issued: 22 October 2026 at 00:05 UTC
View saved version 2
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:df31093b6c4baea18cb5d350", "authorityId": "urn:oid:2.49.0.1.840.0.f43714b52cebf15a7a220433982c728de6a5d4ce.002.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.9bae02e15139329174c8a5497d88ac7d13056347.001.1", "sender": "w-nws.webmaster@noaa.gov" }, { "identifier": "urn:oid:2.49.0.1.840.0.97b09b80e4f87dcf67d0912e113b112161fa9ef5.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Severe Thunderstorm Warning issued October 21 at 5:05PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ", "eventType": "Severe Thunderstorm Warning", "occurredAt": "2026-10-22T00:05:00.000Z", "issuedAt": "2026-10-22T00:05:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-22T00:05:00.000Z", "onsetAt": "2026-10-22T00:05:00.000Z", "expiresAt": "2026-10-22T00:30:00.000Z", "forecastEndAt": "2026-10-22T00:30:00.000Z", "severity": "Severe", "urgency": "Immediate", "certainty": "Observed", "messageType": "Update", "status": "Source update", "place": "Gila, AZ; Maricopa, AZ", "coordinates": null, "issuer": "NWS Phoenix AZ", "summary": "Severe Thunderstorm Warning · Gila, AZ; Maricopa, AZ. Severe; observed; urgency: immediate.", "description": "At 505 PM MST, a severe thunderstorm was located over Sugarloaf\nMountain, moving north at 40 mph.\n\nHAZARD...60 mph wind gusts and half dollar 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...\nRound Valley, Ballantine Trailhead, Sunflower, Sugarloaf Mountain,\nSycamore Creek, Punkin Center, Tonto Basin, Four Peaks, Rio Verde\nand Fort McDowell.\n\nThis includes the following highways...\nAZ Route 87 between mile markers 197 and 206. AZ Route 188 between\nmile markers 254 and 263.", "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.f43714b52cebf15a7a220433982c728de6a5d4ce.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 23:55 UTC

Saved by us

21 October 2026 at 23:55 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 21 at 4:52PM MST until October 21 at 5:30PM MST by NWS Phoenix AZ. We have no earlier saved version to compare.

Bulletin issued: 21 October 2026 at 23:52 UTC

View saved version 1