Is there a severe thunderstorm warning in Prescott, Arizona?

Yes. The National Weather Service in Flagstaff issued a Severe Thunderstorm Warning that includes Prescott and Mayer in Yavapai County. It runs until 3:00 AM MST on October 21.

How bad is the storm in Yavapai County?

Radar indicated two inch hail and 60 mph wind gusts. The National Weather Service lists the damage threat as considerable and warns of hail and wind damage to roofs, siding, windows, vehicles and trees.

Where is the storm moving?

At 2:26 AM MST the storm was 11 miles west of Crown King, or 23 miles south of Prescott. It was moving northeast at 40 mph.

Severe Thunderstorm Warning for Prescott and Yavapai County, AZ: Oct 21, 2026

Key facts

Alert: Severe Thunderstorm Warning (severe)
Issued by: National Weather Service, Flagstaff AZ
Areas: Yavapai, AZ
Places: Prescott, Mayer, Ponderosa Park, Groom Creek, Downtown Prescott, Walker, Potato Patch, Poland Junction, Oak Knoll Village, Palace Station, Wildwood Estates, Prescott Rodeo Grounds
In effect: until 3:00 AM MST, Oct 21, 2026
Damage threat: Considerable

The red outline is the area the National Weather Service put under the severe thunderstorm warning. Source: NWS alert polygon. Not to scale with roads.

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What the National Weather Service says

“Anyone outdoors should move to shelter inside a well-built structure and stay away from windows.”
NWS Flagstaff AZ, Severe Thunderstorm Warning, 2:43 AM MST Oct 21, 2026 · official alert

“HAZARD...Two inch hail and 60 mph wind gusts.”
NWS Flagstaff AZ, Severe Thunderstorm Warning, 2:43 AM MST Oct 21, 2026 · official alert

“People and animals outdoors will be injured.”
NWS Flagstaff AZ, Severe Thunderstorm Warning, 2:43 AM MST Oct 21, 2026 · official alert

What to do

Move inside a well-built building now and stay away from windows. If you are outdoors, get to shelter quickly. The National Weather Service says people and animals outdoors will be injured.

Go to an interior room, a bathroom, a closet or a basement if you can. The warning says this storm is capable of producing all types of severe weather, including tornadoes.

Keep vehicles under cover if you can do so safely without going outside. Hail can damage roofs, siding, windows and vehicles, and wind can damage trees. Wait until the warning expires or the National Weather Service says the threat has passed.

If you are on State Route 69 or State Route 89 near the storm, follow the instructions of local officials and the National Weather Service.

Context

FEMA flood-insurance records show 470 claims in Yavapai County between 1978 and 2026. These counts cover only insured properties, so they understate how often flooding has occurred.

FEMA declared a disaster in the county in March 2010 for severe winter storms and flooding. It is a record of past events and does not predict tonight's storm.

Updates

3:00 AM MST The severe thunderstorm warning expired at 3:00 AM MST.
2:43 AM MST The National Weather Service updated the severe thunderstorm warning; it remains in effect until 3:00 AM MST.
2:36 AM MST The National Weather Service updated the severe thunderstorm warning; it remains in effect until 3:00 AM MST.
2:26 AM MST NWS Flagstaff AZ issued the severe thunderstorm warning until 3:00 AM MST.

History here

Yavapai County: 470 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.

Yavapai County: recent federal disaster declarations

DR-1888 (2010): severe winter storms and flooding

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Questions

Is there a severe thunderstorm warning in Prescott, Arizona?: Yes. The National Weather Service in Flagstaff issued a Severe Thunderstorm Warning that includes Prescott and Mayer in Yavapai County. It runs until 3:00 AM MST on October 21.
How bad is the storm in Yavapai County?: Radar indicated two inch hail and 60 mph wind gusts. The National Weather Service lists the damage threat as considerable and warns of hail and wind damage to roofs, siding, windows, vehicles and trees.
Where is the storm moving?: At 2:26 AM MST the storm was 11 miles west of Crown King, or 23 miles south of Prescott. It was moving northeast at 40 mph.

Sources

NWS Flagstaff AZ: Severe Thunderstorm Warning, Oct 21, 2026 weather.gov
FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov

How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.