NWS Flagstaff AZFF.W 0137August 29, 2026
Flash Flood Warning: Coconino, AZ
The National Weather Service office in Flagstaff issued a flash flood warning for Coconino in Arizona, which was in force until 12:15 a.m. local time on August 30. It was the 137th flash flood warning the NWS office in Flagstaff issued in 2026. Arizona had 177 flash flood warnings in August 2026, against 108 in an average August of 2008-2025 (Arizona's flash flood warnings by year).
ExpiredWarning
In force for 6.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Flagstaff AZ
- Area
- Coconino
- State
- Arizona
- Level
- Warning
- Issued
- 5:22 p.m. PDT, August 29, 2026
- Expires
- 12:15 a.m. PDT, August 30, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KFGZ FF.W 0137
- Official source
- National Weather Service: the notice at its source
Flash Flood Warnings in Arizona since 2008Every warning type in Arizona
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWFGZ The National Weather Service in Flagstaff has issued a * Flash Flood Warning for... Coconino County in north central Arizona...the Colorado River near mile marker 62. * Until 1215 AM MST /115 AM MDT/ Tonight. * At 522 PM MST /622 PM MDT/, Doppler radar indicated thunderstorms that produced heavy rain earlier southwest of Cameron have resulted in a flash flood along the Little Colorado River west of Cameron. Between 1 and 2 inches were estimate by radar earlier in the afternoon. Flash flooding is ongoing or expected to begin shortly. The flood wave is expected to reach the Colorado River between 10 PM and 1 AM. HAZARD...Life threatening flash flooding. Heavy rain from thunderstorms earlier. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding along the Little Colorado River west of Cameron. * Some locations that will experience flash flooding include... Little Colorado River Navajo Tribal Park. This includes the following highways... the Colorado River near mile marker 62. State Route 64 between mile markers 281 and 284. This includes the following recreation areas and campgrounds... Blue Water Base Camp, Old Fish Camp Site, Above LCR Camp Site and Below LCR Camp Site. This includes the following swimming holes... Blue Water Base Camp. This includes the following Little Colorado River west of Cameron.
What the agency told people to do
Flooding of washes and creeks will occur, some dirt roads will become muddy and impassable. Paved roads and underpasses could become flooded as well.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.