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.
- Official source updated
- 20 hr ago
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Official information and local resources
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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.
NWS Tucson AZ · source Aug 29, 2026, 11:39 PM
State resourceArizona Department of Emergency and Military Affairs↗federalNWPS gauge: Santa Cruz River at Congress Street↗federalOfficial Flash Flood Warning↗federalUSGS gauge 09482500 (provisional)↗
In immediate danger? Call 911. Nature Says When is not an emergency service and does not determine whether an area is safe.
Verified context
What the latest evidence says
The Flash Flood Warning is classified as Severe with Immediate urgency. This context covers 1 counties county, including Pima, AZ. Official records list 1 warnings warning under AZC019.
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Official incident details
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At 439 PM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 0.8 and 1.7 inches of rain have fallen. Additional rainfall amounts up to 0.1 inches are possible in the warned area. Flash flooding is already occurring. 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... South Tucson. This includes the following highways... Interstate 19 between mile markers 61 and 63. Route 86 near mile marker 171. Interstate 10 between mile markers 260 and 265. This includes the following streams and drainages... West Branch Santa Cruz River, Chico, Arroyo and Santa Cruz River.
NWS Tucson AZ · source Aug 29, 2026, 11:39 PM
Official forecast
NWS weather context
Official gauge and corroborating observation
River and flood-stage context
Source-timed facts
Current incident picture
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- Affected areas
- Pima, AZ National Weather Service · source Aug 29, 2026, 11:39 PM
- County count
- 1 counties National Weather Service · source Aug 29, 2026, 11:39 PM
- Official alert
- Flash Flood Warning National Weather Service · source Aug 29, 2026, 11:39 PM
- Severity
- Severe National Weather Service · source Aug 29, 2026, 11:39 PM
- Ugc county codes
- AZC019 National Weather Service · source Aug 29, 2026, 11:39 PM
- Urgency
- Immediate National Weather Service · source Aug 29, 2026, 11:39 PM
- Warning count
- 1 warnings National Weather Service · source Aug 29, 2026, 11:39 PM
- Represented population
- 1,061,175 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
Source center: 32.180, -110.938. A point or perimeter is context, not a safety boundary.
- Pima, AZ
Material revisions
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Incident first observed.
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state · emergencyArizona Department of Emergency and Military AffairsVerified Aug 30, 2026, 1:30 AMfederal · gaugeNWPS gauge: Santa Cruz River at Congress StreetVerified Aug 30, 2026, 1:31 AMfederal · weatherOfficial Flash Flood WarningVerified Aug 30, 2026, 1:30 AMfederal · gaugeUSGS gauge 09482500 (provisional)Verified Aug 30, 2026, 1:31 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.