The National Weather Service issued a Flood Advisory for Maricopa County in south central Arizona, effective from 10:13 PM MST on August 9 through 1:15 AM MST on August 10. Heavy rain from thunderstorms has already dropped between 0.25 and 1 inch of rainfall across the area, with minor flooding ongoing or expected to begin shortly in low-lying and poor drainage areas.

Additional rainfall of 0.25 to 1 inch is forecast, which will result in continued minor flooding. Some low-water crossings may become impassable. The advisory primarily affects rural areas of Maricopa County, including drainages such as Flying E Wash, Jimmie Wash, Grass Wash, Star Wash, Mill Wash, and the Hassayampa River. The National Weather Service advises residents to avoid flooded roads; most flood deaths occur in vehicles attempting to cross flooded areas.

Source: National Weather Service

Sources

Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.

  1. National Weather Service retrieved 10/08/2026 05:15

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 10/08/2026 05:15. Every claim traces to a source.