Highlights
- NWS Phoenix issued a Severe Thunderstorm Warning for Maricopa and Yuma on Sept. 16, then allowed it to expire early.
- The storm weakened below severe limits and exited the warned area before the original 4:15 p.m. MST expiration.
- Gusty winds and heavy rain remain possible despite the warning's cancellation, NWS said.
The National Weather Service in Phoenix issued a Severe Thunderstorm Warning for Maricopa and Yuma, Arizona, on September 16 at 4:12 p.m. MST, then allowed it to expire at 4:15 p.m. MST after the triggering storm weakened.
According to the NWS alert, the storm "weakened below severe limits, and has exited the warned area," prompting the agency to let the warning expire ahead of schedule. Despite the cancellation, NWS cautioned that "gusty winds and heavy rain are still possible with this thunderstorm."
Residents who observe severe weather are asked to contact their nearest law enforcement agency, which will relay reports to NWS Phoenix.
A separate NWS forecast for the Phoenix region noted that showers and thunderstorms were expected to increase throughout the day, with the best chances during afternoon and evening hours, and that a Flood Watch was in effect for parts of Maricopa County.
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 16/09/2026 23:13
- weather.gov retrieved 16/09/2026 23:13
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 16/09/2026 23:13. Every claim traces to a source.
