Flash Flood Warning Issued for Northwestern Pima County, AZ
This alert is no longer in effect.
NOAA issued it on August 11, 2026, 13 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Tucson has issued a Flash Flood Warning for northwestern Pima County until 9:00 PM MST due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Northwestern Pima County, Arizona
- Issued
- August 11, 2026
- Issuing authority
- NWS Tucson AZ
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 13 days ago; use the issuing agency's live warning service for current conditions in Northwestern Pima County, Arizona.
Alert Details
Flash Flood Warning issued by NWS Tucson AZ. Effective from August 10 at 6:01 PM MST until August 10 at 9:00 PM MST. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Northwestern Pima County in southeastern Arizona. Specific locations include GuVo, Organ Pipe Cactus National Monument, Why, Gunsight, Charco 27, KuKatch and San Simon West. Affected highways include Route 85 between mile markers 48 and 72 and Route 86 between mile markers 53 and 75. Flash flood prone locations and washes include Gunsight Wash, Sikort Chuapo Wash, Alamo Wash, Siovi Shuatak Wash, Kuakatch Wash, Pisinimo Wash, Pia Oik Wash, Growler Wash, Cuerda de Lena, Vamori Wash, Gu Vo Wash, Hickiwan Wash, Aguajita Wash, San Simon Wash and Rio Cornez Wash.
What You Should Do
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.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain. Between 0.8 and 1.8 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches are possible. Flash flooding is ongoing or expected to begin shortly. Hazard is flash flooding caused by thunderstorms.
Timeline
Alert effective August 10 at 6:01 PM MST and expires August 10 at 9:00 PM MST.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,349 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 11, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.