Highlights
- The National Weather Service issued a Flood Warning for Maricopa County effective 5:04 p.m. MST, expiring 8 p.m. MST on September 16.
- Gauge reports at 5:02 p.m. showed multiple washes still above alarm stage after 2 to 4 inches of rain from afternoon thunderstorms.
- Scottsdale, Phoenix, Glendale, Peoria, Deer Valley Airport, and Desert Ridge Marketplace are among the locations expected to experience flooding.
- NWS instructs drivers to turn around and not attempt flooded roads, noting most flood deaths occur in vehicles.
FLOOD WARNING: The National Weather Service in Phoenix issued a Flood Warning for Maricopa County at 5:04 p.m. MST Tuesday, September 16, with the warning in effect until 8 p.m. MST.
Gauge reports at 5:02 p.m. showed several washes still above alarm stage following heavy rain from afternoon thunderstorms. Between 2 and 4 inches of rain had already fallen across the warned area at the time of issuance, with flooding described as ongoing or expected to begin shortly.
The warning covers the following streams and drainages: Cave Creek, Beardsley Canal, Agua Fria River, Deadman Wash, Skunk Creek, New River, North Canyon Creek, and Apache Wash. Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is described as imminent or occurring.
Locations expected to experience flooding include Phoenix, Glendale, Scottsdale, Peoria, Deer Valley Airport, and Desert Ridge Marketplace.
NWS urges drivers to turn around and not attempt to cross flooded roads, noting that most flood deaths occur in vehicles. Additional flood safety information is available at weather.gov/safety/flood.
The Flood Control District of Maricopa County's real-time flooded roadway map is updated continuously and can help drivers identify affected roads. The warning expires at 8 p.m. MST; monitor NWS Phoenix for any extensions or additional alerts.
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 17/09/2026 00:08
- Maricopa County retrieved 17/09/2026 00:08
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 17/09/2026 00:08. Every claim traces to a source.
