Arizona Severe Flash Flood Warning | Effective 08/03/2026 16:10

Headline: 
Flash Flood Warning issued August 3 at 4:10PM MST until August 3 at 6:30PM MST by NWS Tucson AZ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
August 3, 2026 - 4:10pm
Expires: 
August 3, 2026 - 6:30pm
Description: 
At 410 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area have now diminished. Between 1 and 2 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Pena Blanca Lake including Pena Blanca Road between Interstate 19 and Pena Blanca Lake. This includes the following streams and drainages... Tonto Canyon, Peasco Canyon, Sycamore Canyon, Potrero Creek, Santa Cruz River and Sonoita Creek.
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.
Area Description: 
Santa Cruz, AZ
Forcast Office: 
NWS Tucson AZ
Sender: 
w-nws.webmaster@noaa.gov