NWS Phoenix AZFF.W 0077September 29, 2026
Flash Flood Warning: Maricopa, AZ
The National Weather Service office in Phoenix issued a flash flood warning for Maricopa in Arizona, which was in force until 8:30 p.m. local time on September 29. It was the 77th flash flood warning the NWS office in Phoenix issued in 2026. Arizona had 145 flash flood warnings in September 2026, against 41 in an average September of 2008-2025 (Arizona's flash flood warnings by year).
ExpiredWarning
In force for 4 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Phoenix AZ
- Area
- Maricopa
- State
- Arizona
- Level
- Warning
- Issued
- 4:31 p.m. PDT, September 29, 2026
- Expires
- 8:30 p.m. PDT, September 29, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KPSR FF.W 0077
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
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.
What the agency told people to do
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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.