Highlights
- The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa County effective 9:56 p.m. Monday through 1 a.m. Tuesday.
- Between 0.75 and 1.5 inches of rain had already fallen by 9:56 p.m., with an additional 0.25 to 1 inch possible.
- Affected highways include AZ Route 85, Interstate 10, and AZ Route 303; impacted communities include Avondale, Goodyear, and Buckeye.
- NWS advises drivers to turn around and not attempt to cross flooded roads, noting most flood deaths occur in vehicles.
FLASH FLOOD WARNING: The National Weather Service in Phoenix issued a Flash Flood Warning for Maricopa County in south central Arizona at 9:56 p.m. Monday, August 9, running until 1 a.m. Tuesday, August 10.
Doppler radar and automated rain gauges confirmed thunderstorms producing heavy rain across the warned area. Between 0.75 and 1.5 inches of rain had fallen as of the warning's issuance, with an additional 0.25 to 1 inch possible. Flash flooding was described as ongoing or expected to begin shortly.
Affected locations include Avondale, Goodyear, Buckeye, Litchfield Park, Perryville, and Liberty. Highway impacts cover AZ Route 85 between mile markers 150 and 154, AZ Interstate 10 between mile markers 104 and 113, and AZ Route 303 between mile markers 105 and 106. Streams and drainages at risk include the Beardsley Canal, Gila River, Agua Fria River, Jackrabbit Wash, and Hassayampa River.
NWS warns that flash flooding threatens small creeks and streams, urban areas, highways, streets, underpasses, and other low-lying areas. Officials advise drivers to turn around rather than attempt flooded roads, and to exercise extra caution after dark when flood dangers are harder to see.
The warning expires at 1 a.m. MST Tuesday; monitor NWS Phoenix for updates or extensions.
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 05:00
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 05:00. Every claim traces to a source.
