Millions of Americans across eight Western states are at risk of extreme fire activity on Wednesday as National Weather ...

The temperatures needed to issue this warning depend on the region. In the Northern Plains, extreme cold warnings are issued when temperatures or wind chill levels hit 40 degrees below zero or colder.

Extreme Cold Watches and Warnings will be issued when the forecast calls for -30° wind chills. The Cold Weather Advisory will be issued when wind chill values of -20° are expected. TMJ4 ...

Extreme Wind Warning - Generally issued when there are sustained thunderstorm winds of 31–39 miles per hour and/or gusts of 46–57 miles per hour over land. Flash Flood Warning - Issued when ...

The temperatures needed to issue this warning depend on the region. In the Northern Plains, extreme cold warnings are issued when temperatures or wind chill levels hit 40 degrees below zero or colder.