Live incident briefing · Flood
Flash Flood Warning near Pima, AZ
Official warning geography and instructions, rainfall outlook, gauge observations and forecasts, affected places, and source history.
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Official information and local resources
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.
NWS Tucson AZ · source Aug 29, 2026, 10:31 PM
State resourceArizona Department of Emergency and Military Affairs↗federalNWPS gauge: Santa Cruz River at Green Valley↗federalOfficial Flash Flood Warning↗federalUSGS gauge 09482000 (provisional)↗
In immediate danger? Call 911. Nature Says When is not an emergency service and does not determine whether an area is safe.
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What the latest evidence says
The Flash Flood Warning has Severe severity and Immediate urgency. This warning covers 2 counties counties, including Pima, AZ, Santa Cruz, AZ.
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Official incident details
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FFWTWC The National Weather Service in Tucson has issued a * Flash Flood Warning for... East Central Pima County in southeastern Arizona... Northwestern Santa Cruz County in southeastern Arizona... * Until 630 PM MST. * At 331 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. 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... Green Valley, Amado and Arivaca Junction. This includes Interstate 19 between mile markers 29 and 35. This includes the following streams and drainages... Champurrado Wash, Cerro Prieto Wash, Sopori Wash, Banner Wash, Old Junction Wash, Altar Wash, Santa Cruz River and Demetrie Wash.
NWS Tucson AZ · source Aug 29, 2026, 10:31 PM
Official forecast
NWS weather context
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Current incident picture
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- Affected areas
- Pima, AZ, Santa Cruz, AZ National Weather Service · source Aug 29, 2026, 10:31 PM
- County count
- 2 counties National Weather Service · source Aug 29, 2026, 10:31 PM
- Official alert
- Flash Flood Warning National Weather Service · source Aug 29, 2026, 10:31 PM
- Severity
- Severe National Weather Service · source Aug 29, 2026, 10:31 PM
- Ugc county codes
- AZC019, AZC023 National Weather Service · source Aug 29, 2026, 10:31 PM
- Urgency
- Immediate National Weather Service · source Aug 29, 2026, 10:31 PM
- Warning count
- 1 warnings National Weather Service · source Aug 29, 2026, 10:31 PM
- Represented population
- 1,107,983 people U.S. Census Bureau 2020 Decennial Census · source Apr 1, 2020, 12:00 AM
Geographic context
Incident area and nearby places
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Map-equivalent affected-area text
Pima, AZ; Santa Cruz, AZ
Source center: 31.799, -111.127. A point or perimeter is context, not a safety boundary.
- Pima, AZ
- Santa Cruz, AZ
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Incident first observed.
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state · emergencyArizona Department of Emergency and Military AffairsVerified Aug 30, 2026, 12:00 AMfederal · gaugeNWPS gauge: Santa Cruz River at Green ValleyVerified Aug 30, 2026, 12:02 AMfederal · weatherOfficial Flash Flood WarningVerified Aug 30, 2026, 12:00 AMfederal · gaugeUSGS gauge 09482000 (provisional)Verified Aug 30, 2026, 12:02 AM
How this briefing is assembled
Source facts are stored with source and retrieval times. The page renders stored records only. Optional generated context is omitted whenever validation fails and never controls emergency instructions, containment, road status, health guidance, or publication.