Flash Flood Warning Issued for South Central Pima County, AZ
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NWS Tucson has issued a Flash Flood Warning for South Central Pima County until 12:15 AM MST August 4 due to thunderstorms producing heavy rain.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- South Central Pima County, AZ
- Issued
- August 4, 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: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
A Flash Flood Warning (FFW) has been issued by the National Weather Service in Tucson AZ. The alert is effective from 9:18 PM MST on August 3, 2026, until 12:15 AM MST on August 4, 2026.
Affected Areas
The warning covers South Central Pima County in southeastern Arizona, primarily the Tohono O'odham Nation. Specific locations include Topawa, San Miguel, Vamori, South Komelik, Cowlic, Choulic, Newfield, Coldfields, Sasabe, Fresnal Canyon, and Hashan Chuchg. It includes Route 286 between mile markers 1 and 13, Indian Route 19 south of Topawa, and multiple washes including Lopez Wash, Chutum Vaya Wash, Santa Margarita Wash, Vamori Wash, Moras Wash, Sasabe Arroyo, Thomas Canyon Wash, Legunita Wash, Baboquivari Wash, Puertocito Wash, Compartidero Arroyo, Topawa Wash, Canoa Wash, Fresnal Wash, Big Wash, Fresno Wash, Sabino Wash, Ali Molina Wash, Contreras Wash, Mulberry Wash, Altar Wash, Placeritos Wash, Solano Wash, Bailey Wash, Little Thomas Wash, and Osa Wash.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen, with additional rainfall amounts up to 1 inch possible. Flash flooding is ongoing or expected to begin shortly.
Timeline
The warning is in effect from 9:18 PM MST August 3 until 12:15 AM MST August 4.
Original source: NOAA Official Notice ↗
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