Severe Thunderstorm Warning
Severe Thunderstorm Warning issued October 21 at 4:34PM MST until October 21 at 5:00PM MST by NWS Flagstaff AZ
Affected area: Coconino, AZ
Effective: Oct 21, 2026 4:34 PM GMT-0700
Expires: Oct 21, 2026 5:00 PM GMT-0700
Alert details
SVRFGZ
The National Weather Service in Flagstaff has issued a
* Severe Thunderstorm Warning for…
Coconino County in north central Arizona…
* Until 500 PM MST.
* At 434 PM MST, a severe thunderstorm was located 11 miles southwest
of Grand Canyon National Park, or 39 miles west of Grand Canyon
Village, moving north at 50 mph.
HAZARD…Half dollar size hail.
SOURCE…Radar indicated.
IMPACT…Damage to vehicles is expected.
* Locations impacted include…
Supai, Hualapai Reservation, Havasupai Reservation, Little Navajo
Falls, Hualapai Hilltop, Mooney Falls and Beaver Falls.
This includes the Colorado River between river miles 138 and 170.
This includes the following recreation areas and campgrounds…
Ponchos Camp Site, Football Field Camp Site, Backeddy Camp Site,
Doris Camp Site, Fishtail Camp Site, Keyhole Camp Site, Above Kanab
Camp Site, Kanab Camp Site, Lower Kanab Camp Site, Above Olo Camp
Site, Olo Camp Site, Opposite Matkat Canyon Camp Site, Matkat Hotel
Camp Site, Below Matkat Hotel Camp Site, Upset Hotel Camp Site,
Sinyala Camp Site, Very Last Chance Camp Site, First Chance Camp
Site, Second Chance Camp Site and Fern Glen Camp Site.
This includes the following swimming holes…
All swimming holes on Havasu Creek near Supai.
Safety information
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing large hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
A Tornado Watch remains in effect until 600 PM MST Wednesday for a
portion of north central Arizona.
Source: NWS Flagstaff AZ
View the official National Weather Service alert
This post is automatically updated from official National Weather Service alert data.
