Highlights
- NWS Phoenix expired a Flood Watch for Scottsdale/Paradise Valley and 21 other areas at 11 p.m. MST on Sept. 16.
- The watch, rated severe, had been in effect as of 10:49 p.m. MST before NWS determined the flash-flooding threat had ended.
- Affected zones included Central Phoenix, Cave Creek/New River, Fountain Hills/East Mesa, and Apache Junction/Gold Canyon, among others.
The National Weather Service office in Phoenix expired a Flood Watch covering Scottsdale/Paradise Valley and more than 20 surrounding areas at 11 p.m. MST Tuesday, September 16, after determining the threat for significant flash flooding had passed.
The watch, classified as severe, was issued September 16 at 10:49 p.m. MST. In addition to Scottsdale and Paradise Valley, the affected zones spanned much of the greater metro area and outlying desert regions: Cave Creek/New River, Deer Valley, North Phoenix/Glendale, Central Phoenix, South Mountain/Ahwatukee, Southeast Valley/Queen Creek, East Valley, Fountain Hills/East Mesa, New River Mesa, Buckeye/Avondale, Northwest Valley, Tonopah Desert, Gila Bend, Aguila Valley, Sonoran Desert National Monument, Northwest Pinal County, West Pinal County, Apache Junction/Gold Canyon, Central La Paz, Gila River Valley, and Kofa.
According to the NWS Phoenix alert, the agency stated that "the threat for significant flash flooding has ended" and that the watch would expire at 11 p.m. MST. A separate NWS Phoenix forecast page noted the watch had covered the majority of Arizona, including Maricopa, Pinal, and Gila counties.
No further instructions were included in the expiration notice. Residents should monitor the NWS Phoenix forecast page for any updated advisories through the overnight hours.
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 05:53
- weather.gov retrieved 17/09/2026 05:53
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 05:53. Every claim traces to a source.
