The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa County at 11:51 a.m. MST on September 16, effective until 1:45 p.m. MST. Doppler radar indicated thunderstorms producing heavy rain across the area, with between 0.5 and 1 inch of rain already fallen. Expected rainfall rates are 1 to 2 inches per hour, with additional accumulation up to 0.5 inches possible.
Flash flooding is ongoing or expected to begin shortly in small creeks, streams, urban areas, highways, streets, underpasses, and low-lying areas. Mesa and Falcon Field Airport are among locations expected to experience flooding. The National Weather Service urges residents to turn around and avoid flooded roads, noting that most flood deaths occur in vehicles.
Source: National Weather Service.
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- National Weather Service retrieved 16/09/2026 18:53
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 18:53. Every claim traces to a source.
