The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa and Pinal counties effective at 11:11 PM MST on August 23 and expiring at 2:15 AM MST on August 24. Doppler radar indicated thunderstorms producing heavy rain across both counties, with between 0.75 and 1.25 inches of rain already fallen. Additional rainfall up to 0.5 inches is possible, and flash flooding is already occurring.
Life-threatening flash flooding is expected in creeks, streams, urban areas, highways, streets, and underpasses. Affected locations include Mobile and AZ Route 238 between mile markers 20 and 29, as well as West Prong Waterman Wash and Waterman Wash. Residents are urged to avoid flooded roads; most flood deaths occur in vehicles attempting to cross rising water.
Source: National Weather Service.
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- National Weather Service retrieved 24/08/2026 06:14
Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 24/08/2026 06:14. Every claim traces to a source.
