Highlights
- NWS Phoenix issued a flood advisory for Maricopa County at 10:58 p.m. Sunday, expiring at 12:15 a.m. Monday.
- Between 0.5 and 1 inch of rain had fallen by advisory time, with minor flooding ongoing or expected in low-lying areas.
- Affected drainages include the Salt River, Gila River, Cave Creek, and Agua Fria River; flooded roads reported near Glendale, Avondale, and Goodyear.
- NWS warns drivers not to attempt flooded roads — most flood deaths occur in vehicles.
The National Weather Service in Phoenix issued a flood advisory for Maricopa County at 10:58 p.m. Sunday, August 9, with expiration set for 12:15 a.m. Monday, August 10. The advisory covers south central Arizona and rates severity as minor.
Doppler radar at the time of issuance showed heavy rain from active thunderstorms. Between 0.5 and 1 inch of rain had already fallen across the advisory area, with minor flooding ongoing or expected to begin shortly. Impacts include minor flooding in low-lying and poor drainage areas, dangerous flows over low-water crossings, and water over roadways.
Affected streams and drainages include Corgett Wash, Lum Wash, the Salt River, the Gila River, Cave Creek, and the Agua Fria River. Locations expected to experience flooding include Glendale, Avondale, Goodyear, Tolleson, Cashion, Phoenix International Raceway, Camelback Ranch, and Glendale Sports Complex.
NWS advises drivers to turn around rather than attempt flooded roads, noting that most flood deaths occur in vehicles. Extra caution is urged at night, when flood dangers are harder to assess visually. The agency's full flood safety guidance is available at weather.gov/safety/flood.
The Maricopa County Flood Control District maintains a live flooded-roadway map at alert.fcd.maricopa.gov for drivers navigating the county overnight.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- api.weather.gov retrieved 10/08/2026 06:00
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 06:00. Every claim traces to a source.
