The National Weather Service in Phoenix issued a Flash Flood Warning for Gila and Maricopa counties on September 16 at 11:32 AM MST, effective until 3:30 PM MST. Doppler radar indicated thunderstorms producing heavy rain across both counties, with 0.5 to 1.5 inches already fallen. Expected rainfall rates are 1 to 2 inches per hour, with additional accumulations of 1 to 2 inches possible.
Flash flooding is ongoing or expected to begin shortly in affected areas including Round Valley, Sunflower, Sycamore Creek, Ballantine Trailhead, and Camp Creek. Life-threatening flooding of creeks, streams, urban areas, highways, streets, and underpasses is anticipated. The National Weather Service urges residents to avoid flooded roads; most flood deaths occur in vehicles attempting to cross water.
Source: National Weather Service.
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- National Weather Service retrieved 16/09/2026 18:33
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 18:33. Every claim traces to a source.
