First published Oct 21, 2026, 6:29:15 PM UTC · Last updated Oct 21, 2026, 6:29:15 PM UTC

Floods

Flash Flood Warning — NWS Flagstaff AZ

Original source title

Flash Flood Warning issued October 21 at 11:02AM MST until October 21 at 3:00PM MST by NWS Flagstaff AZ

Reported by U.S. National Weather Service Alerts NWS

The National Weather Service in Flagstaff issued a life-threatening flash flood warning for the Moenkopi Wash area of Coconino County, Arizona, through 3:00 p.m. MST on October 21, 2026. The source reports a rapid rise in a river gauge and says flash flooding was ongoing or expected shortly.

At a glance

Affected location: Moenkopi Wash, Coconino County, Arizona

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Why it matters

The warning describes life-threatening flooding and instructs people encountering floodwaters to climb to safety.

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: 2/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The 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 21 at 11:02AM MST until October 21 at 3:00PM MST by NWS Flagstaff AZ

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