The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa and Pinal counties on September 16 at 11:46 AM MST. Doppler radar indicated thunderstorms producing heavy rain across both counties, with between 0.5 and 1 inch of rain already fallen. Expected rainfall rates are 1 to 2 inches per hour, with additional rainfall amounts of 0.5 to 1 inch possible.
The warning remains in effect until 3:45 PM MST. Flash flooding is ongoing or expected to begin shortly, with life-threatening impacts to creeks, streams, urban areas, highways, streets, and underpasses. Locations including Estrella and Mobile will experience flooding. Authorities urge residents to turn around and avoid flooded roads; most flood deaths occur in vehicles.
Source: National Weather Service.
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- National Weather Service retrieved 16/09/2026 18:48
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 16/09/2026 18:48. Every claim traces to a source.
