Coconino County, AZ —

What is happening:

The National Weather Service in Flagstaff has issued a Severe Thunderstorm Warning for Coconino County and Navajo County in north central Arizona, in effect until 7:15 AM MST (9:15 AM CT). As of 6:44 AM MST, radar showed a severe thunderstorm about 9 miles south of Cow Springs and 26 miles northeast of Tuba City, racing north at 45 miles per hour.

Local impacts:

The storm is capable of producing 60 mph wind gusts and quarter-size hail. Hail damage to vehicles is expected, along with wind damage to roofs, siding, and trees. Locations in the storm's path include Shonto, Crossroads, Ts'ah Bii Kin (Inscription House), Cow Springs, and the Navajo National Monument, as well as Highway 160 between mile markers 348 and 371.

What to do:

- Get inside a sturdy building right away and stay away from windows.

- Move vehicles under cover if you can do so safely — hail can damage them in minutes.

- Bring in or secure loose outdoor items before the wind arrives.

- This storm is moving fast, so don't wait to act.

*Source: National Weather Service Flagstaff, October 21.*