Phoenix, AZ – Millions of residents across the Phoenix metropolitan area and portions of central and southwestern Arizona face a severe thunderstorm threat Wednesday afternoon and evening, Oct. 21, 2026, as forecasters warn of potentially damaging winds reaching 70 mph, large hail, frequent lightning and heavy rainfall. A Severe Thunderstorm Watch remains in effect until 9 p.m. MST Wednesday.
According to the National Weather Service (NWS) Phoenix office, the watch was issued at 1:58 p.m. Wednesday, Oct. 21, covering portions of Arizona where thunderstorms could intensify into severe weather through the evening hours.
70 MPH Winds and Large Hail Possible…