NWS Tucson AZFF.W 0199September 12, 2026
Flash Flood Warning: Pima and Santa Cruz, AZ
The National Weather Service office in Tucson issued a flash flood warning for Pima and Santa Cruz in Arizona, which was in force until 4:30 p.m. local time on September 12. It was the 199th flash flood warning the NWS office in Tucson 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 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 and Santa Cruz
- State
- Arizona
- Level
- Warning
- Issued
- 1:31 p.m. PDT, September 12, 2026
- Expires
- 4:30 p.m. PDT, September 12, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KTWC FF.W 0199
- 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... East Central Pima County in southeastern Arizona... North Central Santa Cruz County in southeastern Arizona... * Until 430 PM MST. * At 131 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area, with the heaviest rain falling between Green Valley and Madera Canyon. Between 1 and 2 inches of rain have fallen. 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... Sahuarita and Madera Canyon. This includes the following streams and drainages... Santa Cruz River, Gardner Canyon, Box Canyon Wash, Sonoita Creek and Josephine Canyon.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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. Remain alert for flooding even in locations not receiving rain. Washes, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall.
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.