Arizona Severe Flash Flood Warning | Effective 07-20-2026 16:49

Headline: 
Flash Flood Warning issued July 20 at 4:49PM MST until July 20 at 7:45PM MST by NWS Flagstaff AZ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 20, 2026 - 4:49pm
Expires: 
July 20, 2026 - 7:45pm
Description: 
FFWFGZ The National Weather Service in Flagstaff has issued a * Flash Flood Warning for... Coconino County in north central Arizona... Navajo County in north central Arizona... * Until 745 PM MST. * At 449 PM MST, Doppler radar indicated thunderstorms producing heavy rain west of Winslow, along I-40. 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, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Winslow, Winslow-Lindbergh Regional Airport and West Winslow. This includes the following highways... Interstate 40 between mile markers 244 and 252. Business Interstate 40 between mile markers 252 and 253. State Route 99 between mile markers 53 and 54. This includes the following creeks, washes and rivers... Tucker Flat 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 7:45 PM MST. Evite areas inundadas.
Servicio Nacional de Meteorologia: AVISO DE INUNDACIONES REPENTINAS en efecto para esta area hasta las 7:45 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; Navajo, AZ
Forcast Office: 
NWS Flagstaff AZ