Arizona Severe Flash Flood Warning | Effective 07/21/2026 16:43

Headline: 
Flash Flood Warning issued July 21 at 4:43PM MST until July 21 at 7:45PM MST by NWS Phoenix AZ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 4:43pm
Expires: 
July 21, 2026 - 7:45pm
Description: 
FFWPSR The National Weather Service in Phoenix has issued a * Flash Flood Warning for... Pinal County in southeastern Arizona... * Until 745 PM MST. * At 443 PM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch 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 and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Superior, Top-Of-The-World, Boyce Thompson Arboretum. This includes the following highways... AZ Route 177 between mile markers 159 and 167. US Highway 60 between mile markers 221 and 230.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Area Description: 
Pinal, AZ
Forcast Office: 
NWS Phoenix AZ