First published Oct 23, 2026, 1:23:15 AM UTC · Last updated Oct 23, 2026, 1:23:15 AM UTC

Floods

Flash Flood Warning — NWS Tucson AZ

Original source title

Flash Flood Warning issued October 22 at 5:50PM MST until October 22 at 8:00PM MST by NWS Tucson AZ

Reported by U.S. National Weather Service Alerts NWS

The National Weather Service in Tucson extended a flash flood warning for parts of Graham and Greenlee counties, Arizona, until 8:00 PM MST on October 22. Radar indicated heavy rain and ongoing or imminent life-threatening flash flooding; the warning advised people to turn around rather than drive through flooded roads.

At a glance

Affected location: East Central Graham County and Central Greenlee County, Arizona

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Why it matters

The warning identifies life-threatening flooding and directs people to avoid flooded roads.

Location

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Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 8/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 5/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Flash Flood Warning issued October 22 at 5:50PM MST until October 22 at 8:00PM MST by NWS Tucson AZ

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Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

Nearby · within 200 km
Severe Thunderstorm Warnings — TucsonOct 23, 2026, 1:43 AM UTC
3 related advisories are grouped here. Expand the group to review every affected area and source advisory.
Nearby · within 200 km
Severe Thunderstorm Warnings — FlagstaffOct 22, 2026, 11:28 PM UTC
28 related advisories are grouped here. Expand the group to review every affected area and source advisory.
Nearby · within 200 km
Flash Flood Warning for Graham County, ArizonaOct 22, 2026, 11:14 PM UTC
In Graham, Arizona, law enforcement reported heavy rain and flash flooding already occurring, with life-threatening flooding possible across creeks, streets, highways, and underpasses. The warning instructed people to avoid driving on flooded roads.
Nearby · within 200 km
NWS Tucson warns of severe thunderstorm with large hail and damaging winds in Graham and Pinal CountiesOct 22, 2026, 10:06 PM UTC
A severe thunderstorm was reported southeast of Peridot, moving northeast at 50 mph, with tennis-ball-size hail and 60 mph wind gusts. People outdoors were instructed to shelter inside a sturdy building and stay away from windows.
Nearby · within 200 km
NWS Tucson issues severe thunderstorm warning for Graham, ArizonaOct 22, 2026, 10:03 PM UTC
The National Weather Service issued a severe thunderstorm warning for Graham, Arizona, from 3:03 to 3:30 p.m. MST on October 22, 2026. The alert reported 60 mph wind gusts and quarter-size hail and advised people to shelter indoors.
Nearby · within 200 km
Severe Thunderstorm Warnings — PhoenixOct 22, 2026, 8:58 PM UTC
7 related advisories are grouped here. Expand the group to review every affected area and source advisory.

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