Arizona Severe Flash Flood Warning | Effective 07-18-2026 18:58

Headline: 
Flash Flood Warning issued July 18 at 6:58PM MST until July 18 at 10:00PM MST by NWS Flagstaff AZ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 18, 2026 - 6:58pm
Expires: 
July 18, 2026 - 10:00pm
Description: 
FFWFGZ The National Weather Service in Flagstaff has issued a * Flash Flood Warning for... Coconino County in north central Arizona... * Until 1000 PM MST /1100 PM MDT/. * At 658 PM MST /758 PM MDT/, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 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. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, normally dry washes and roads. * Some locations that will experience flash flooding include... Grand Falls and Wolf Crossing. This includes the following creeks, washes and rivers... Little Colorado River and San Francisco Wash.
Instruction: 
Flooding of washes and creeks will occur, some dirt roads will become muddy and impassable. Paved roads and underpasses could become flooded as well.
SNM: AVISO DE INUNDACIONES REPENTINAS hasta 10:00 PM MST. Evite areas inundadas.
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 10:00 PM MST. Esta es una situacion peligrosa y amenaza la vida. No intente viajar a menos que sea para abandonar un area propensa a inundaciones o bajo una orden de desalojo.
Area Description: 
Coconino, AZ
Forcast Office: 
NWS Flagstaff AZ