Arizona Severe Flash Flood Warning | Effective 09/29/2026 16:31

Headline: 
Flash Flood Warning issued September 29 at 4:31PM MST until September 29 at 8:30PM MST by NWS Phoenix AZ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
September 29, 2026 - 4:31pm
Expires: 
September 29, 2026 - 8:30pm
Description: 
FFWPSR The National Weather Service in Phoenix has issued a * Flash Flood Warning for... The Sand Stone burn scar in... Maricopa County in south central Arizona... * Until 830 PM MST. * At 431 PM MST, Doppler radar indicated thunderstorms producing heavy rain over the Sand Stone Burn Scar. Between 0.75 and 1.5 inches of rain have fallen. Additional rainfall amounts up 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 Sand Stone Burn Scar. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Sand Stone Burn Scar. * Some locations that will experience flash flooding include... Ballantine Trailhead, Round Valley and Sugarloaf Mountain. This includes AZ Route 87 between mile markers 204 and 213.
Instruction: 
This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Sand Stone Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety.
Area Description: 
Maricopa, AZ
Forcast Office: 
NWS Phoenix AZ
Sender: 
w-nws.webmaster@noaa.gov