Flash Flood Warning for Coconino County, AZ
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NWS Flagstaff has issued a Flash Flood Warning for the Havasu Creek basin in Coconino County until 3:00 PM MST due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Coconino County, Arizona
- Issued
- August 29, 2026
- Issuing authority
- NWS Flagstaff AZ
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Flash Flood Warning issued by NWS Flagstaff AZ. Effective from 12:02 PM MST to 3:00 PM MST on August 29, 2026.
Affected Areas
Coconino County in north central Arizona, specifically the Havasu Creek basin from Supai northward to the Colorado River. Includes rural areas, swimming holes on Havasu Creek near Supai, Little Coyote Canyon, and the Colorado River between river miles 156 and 158.
What You Should Do
Campers and hikers should move to higher ground immediately. Stay away from creeks and washes. Some campsites will be flooded.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain over the Havasu Creek basin. Between 0.5 and 0.75 inches of rain have fallen, with additional rainfall amounts of 0.25 to 0.5 inches possible. Life threatening flash flooding is ongoing or expected to begin shortly.
Timeline
Alert in effect from 12:02 PM MST until 3:00 PM MST on August 29, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (945 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 29, 2026.
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