NOAA NWS / Event history

Severe Thunderstorm Warning issued October 20 at 11:02PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ

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

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Bulletin issued: 21 October 2026 at 06:02 UTC
First saved by us: 21 October 2026 at 05:40 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 Phoenix AZ · Maricopa, AZ
Certainty / urgency: Observed / Immediate
Message expiry (not hazard end): 21 October 2026 at 06:15 UTC
Forecast onset / end: 21 October 2026 at 06:02 UTC / 21 October 2026 at 06:15 UTC

Archived official description

At 1102 PM MST, a severe thunderstorm was located over Sugarloaf Mountain, moving northeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is possible. Wind damage to roofs, siding, and trees is possible. Locations impacted include... Sugarloaf Mountain.

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. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Phoenix AZ.

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

21 October 2026 at 06:10 UTC

Version 3

6 recorded details changed

Title: Before
Severe Thunderstorm Warning issued October 20 at 10:49PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ
After
Severe Thunderstorm Warning issued October 20 at 11:02PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ
Source updated: Before
21 October 2026 at 05:49 UTC
After
21 October 2026 at 06:02 UTC
Effective from: Before
21 October 2026 at 05:49 UTC
After
21 October 2026 at 06:02 UTC
Forecast onset: Before
21 October 2026 at 05:49 UTC
After
21 October 2026 at 06:02 UTC
Official description: Before
At 1049 PM MST, a severe thunderstorm was located over Goldfield Ranch, or 6 miles east of Fountain Hills, moving northeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is possible. Wind damage to roofs, siding, and trees is possible. Locations impacted include... Fountain Hills, Sugarloaf Mountain, Goldfield Ranch, Rio Verde, Salt River Tubing Recreation Area, Saguaro Lake and Fort McDowell.
After
At 1102 PM MST, a severe thunderstorm was located over Sugarloaf Mountain, moving northeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is possible. Wind damage to roofs, siding, and trees is possible. Locations impacted include... Sugarloaf Mountain.
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2eacb98155f5a2aba61f1a73451973384ba95a01.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1fdaeff692f0af054017932337dba2dec317424c.001.1

Bulletin issued: 21 October 2026 at 06:02 UTC

View saved version 3

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

{
  "id": "nws:48e9debbfea544fef4c811e4",
  "authorityId": "urn:oid:2.49.0.1.840.0.1fdaeff692f0af054017932337dba2dec317424c.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.7d2823eee44795ab1334512abb50e9528bc83966.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    },
    {
      "identifier": "urn:oid:2.49.0.1.840.0.2eacb98155f5a2aba61f1a73451973384ba95a01.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Warning issued October 20 at 11:02PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ",
  "eventType": "Severe Thunderstorm Warning",
  "occurredAt": "2026-10-21T06:02:00.000Z",
  "issuedAt": "2026-10-21T06:02:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-21T06:02:00.000Z",
  "onsetAt": "2026-10-21T06:02:00.000Z",
  "expiresAt": "2026-10-21T06:15:00.000Z",
  "forecastEndAt": "2026-10-21T06:15:00.000Z",
  "severity": "Severe",
  "urgency": "Immediate",
  "certainty": "Observed",
  "messageType": "Update",
  "status": "Source update",
  "place": "Maricopa, AZ",
  "coordinates": null,
  "issuer": "NWS Phoenix AZ",
  "summary": "Severe Thunderstorm Warning · Maricopa, AZ. Severe; observed; urgency: immediate.",
  "description": "At 1102 PM MST, a severe thunderstorm was located over Sugarloaf\nMountain, moving northeast at 30 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is possible. Wind damage to roofs,\nsiding, and trees is possible.\n\nLocations impacted include...\nSugarloaf Mountain.",
  "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\nTorrential rainfall is also occurring with this storm and may lead to\nflash flooding. Do not drive your vehicle through flooded roadways.\n\nReport severe weather to your nearest law enforcement agency or the\nNational Weather Service office in Phoenix AZ.",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1fdaeff692f0af054017932337dba2dec317424c.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 05:55 UTC
Version 2
Source status changed
Title
Before
Severe Thunderstorm Warning issued October 20 at 10:28PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ
After
Severe Thunderstorm Warning issued October 20 at 10:49PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ
Source updated
Before
21 October 2026 at 05:28 UTC
After
21 October 2026 at 05:49 UTC
Effective from
Before
21 October 2026 at 05:28 UTC
After
21 October 2026 at 05:49 UTC
Forecast onset
Before
21 October 2026 at 05:28 UTC
After
21 October 2026 at 05:49 UTC
Message type
Before
Alert
After
Update
Source status
Before
Source alert
After
Source update
Official description
Before
SVRPSR The National Weather Service in Phoenix has issued a * Severe Thunderstorm Warning for... Maricopa County in south central Arizona... * Until 1115 PM MST. * At 1028 PM MST, a severe thunderstorm was located over Falcon Field Airport, or 5 miles north of Mesa, moving northeast at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is possible. Wind damage to roofs, siding, and trees is possible. * Locations impacted include... Mesa, Fountain Hills, Sugarloaf Mountain, East Mesa, Goldfield Ranch, Salt River Tubing Recreation Area, Granite Reef Dam, Saguaro Lake, Rio Verde, McDowell Mountain Park, Usery Mountain Park, Falcon Field Airport and Fort McDowell.
After
At 1049 PM MST, a severe thunderstorm was located over Goldfield Ranch, or 6 miles east of Fountain Hills, moving northeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is possible. Wind damage to roofs, siding, and trees is possible. Locations impacted include... Fountain Hills, Sugarloaf Mountain, Goldfield Ranch, Rio Verde, Salt River Tubing Recreation Area, Saguaro Lake and Fort McDowell.
External source link
Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7d2823eee44795ab1334512abb50e9528bc83966.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2eacb98155f5a2aba61f1a73451973384ba95a01.001.1
Bulletin issued: 21 October 2026 at 05:49 UTC
View saved version 2
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:0384403b983dc413840055e3", "authorityId": "urn:oid:2.49.0.1.840.0.2eacb98155f5a2aba61f1a73451973384ba95a01.001.1", "sender": "w-nws.webmaster@noaa.gov", "references": [ { "identifier": "urn:oid:2.49.0.1.840.0.7d2823eee44795ab1334512abb50e9528bc83966.001.1", "sender": "w-nws.webmaster@noaa.gov" } ], "category": "weather", "title": "Severe Thunderstorm Warning issued October 20 at 10:49PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ", "eventType": "Severe Thunderstorm Warning", "occurredAt": "2026-10-21T05:49:00.000Z", "issuedAt": "2026-10-21T05:49:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-21T05:49:00.000Z", "onsetAt": "2026-10-21T05:49:00.000Z", "expiresAt": "2026-10-21T06:15:00.000Z", "forecastEndAt": "2026-10-21T06:15:00.000Z", "severity": "Severe", "urgency": "Immediate", "certainty": "Observed", "messageType": "Update", "status": "Source update", "place": "Maricopa, AZ", "coordinates": null, "issuer": "NWS Phoenix AZ", "summary": "Severe Thunderstorm Warning · Maricopa, AZ. Severe; observed; urgency: immediate.", "description": "At 1049 PM MST, a severe thunderstorm was located over Goldfield\nRanch, or 6 miles east of Fountain Hills, moving northeast at 30 mph.\n\nHAZARD...60 mph wind gusts and quarter size hail.\n\nSOURCE...Radar indicated.\n\nIMPACT...Hail damage to vehicles is possible. Wind damage to roofs,\nsiding, and trees is possible.\n\nLocations impacted include...\nFountain Hills, Sugarloaf Mountain, Goldfield Ranch, Rio Verde,\nSalt River Tubing Recreation Area, Saguaro Lake and Fort McDowell.", "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\nTorrential rainfall is also occurring with this storm and may lead to\nflash flooding. Do not drive your vehicle through flooded roadways.\n\nReport severe weather to your nearest law enforcement agency or the\nNational Weather Service office in Phoenix AZ.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2eacb98155f5a2aba61f1a73451973384ba95a01.001.1", "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 05:40 UTC

Saved by us

21 October 2026 at 05:40 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Warning issued October 20 at 10:28PM MST until October 20 at 11:15PM MST by NWS Phoenix AZ. We have no earlier saved version to compare.

Bulletin issued: 21 October 2026 at 05:28 UTC

View saved version 1