NWS Tucson AZFF.W 0174August 31, 2026
Flash Flood Warning: Pima, AZ
The National Weather Service office in Tucson issued a flash flood warning for Pima in Arizona, which was in force until 7:00 a.m. local time on August 31. It was the 174th flash flood warning the NWS office in Tucson issued in 2026. Arizona had 177 flash flood warnings in August 2026, against 108 in an average August of 2008-2025 (Arizona's flash flood warnings by year).
ExpiredWarning
In force for 3 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Tucson AZ
- Area
- Pima
- State
- Arizona
- Level
- Warning
- Issued
- 4:00 a.m. PDT, August 31, 2026
- Expires
- 7:00 a.m. PDT, August 31, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KTWC FF.W 0174
- Official source
- National Weather Service: the notice at its source
Flash Flood Warnings in Arizona since 2008Every warning type in Arizona
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
FFWTWC The National Weather Service in Tucson has issued a * Flash Flood Warning for... Central Pima County in southeastern Arizona... * Until 700 AM MST. * At 400 AM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. The AZGFD 3 gauge reported 1.22 inches in 30 minutes, the Diamond Bell Ranch alert gauge reported 0.98 inches in 30 minutes, and the Altar Wash at Hwy 286 gauge reported 0.83 inches in 30 minutes. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. 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... Three Points, Tucson Estates, Tucson Mountain Park and Ryan AirField. This includes the following highways... Route 86 between mile markers 146 and 160. Route 286 between mile markers 25 and 45. This includes the following streams and drainages... Alambre Wash, Cerro Prieto Wash, Saucito Wash, Altar Wash, Brown Wash, Brawley Wash, Banner Wash, Fresno Wash, Mendoza Wash, South Mendoza Wash and Soto Wash.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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.