Highlights

FLOOD WATCH: The National Weather Service in Phoenix issued a Flood Watch at 11:34 p.m. Sunday covering Scottsdale, Paradise Valley, and 16 other zones across south-central Arizona, effective through 5 a.m. Monday, Aug. 30.

The watch spans a wide swath of the metro, including Cave Creek, New River, Deer Valley, Central Phoenix, North Phoenix, Glendale, Fountain Hills, East Mesa, Buckeye, Avondale, and the Southeast Valley, as well as outlying areas including the Mazatzal Mountains, Tonto Basin, Tonopah Desert, and Aguila Valley.

The NWS said ample moisture and atmospheric instability will combine with a weather system positioned over western portions of the region to drive scattered thunderstorms capable of heavy rainfall from Sunday evening into Sunday night. Storms training over the same areas could produce localized totals exceeding two inches within the watch zone.

The agency warned that excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Residents in those areas should monitor later forecasts and be prepared to act if conditions deteriorate.

The NWS watch expires at 5 a.m. Monday; a Flood Warning, which would signal flooding is imminent or occurring, could be issued before then if conditions warrant.

Sources

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  1. api.weather.gov retrieved 30/08/2026 06:36

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 30/08/2026 06:36. Every claim traces to a source.