NWS Flagstaff AZFF.W 0133August 28, 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 7:00 p.m. local time on August 28. It was the 133rd 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 2.9 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
- 4:08 p.m. PDT, August 28, 2026
- Expires
- 7:00 p.m. PDT, August 28, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KFGZ FF.W 0133
- 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... The Antelope Creek basin in... Coconino County in north central Arizona... * Until 700 PM MST /800 PM MDT/. * At 408 PM MST /508 PM MDT/, Doppler radar indicated thunderstorms producing heavy rain over the Antelope Creek basin. Between 0.15 and 0.4 inches of rain have fallen. Additional rainfall amounts of 0.25 to 0.75 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Antelope Creek basin. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Antelope Creek basin. * Some locations that will experience flash flooding include... Mainly rural areas of Coconino County. This includes the following slot canyons... Upper Antelope Canyon, Lower Antelope Canyon, Owl Canyon, Rattlesnake Canyon and Porcupine Canyon. This includes the following creeks, washes and rivers... Antelope Creek.
What the agency told people to do
Get out of Antelope Canyon and other area slot canyons immediately! Deadly flash flooding is imminent or occurring!
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.