A tornado warning has been issued for Hernando County, and it expires at 4:45 p.m. A tornado watch for areas just north of the Tampa Bay region has been extended until 5 p.m. as storms are expected to move in on Sunday evening. The counties under the tornado watch include Hillsborough, Pinellas, Pasco and Citrus.

A severe weather outbreak in Alabama through Saturday with the threat of hail, damaging winds and tornadoes. Some tornadoes could be strong and long-track.

Violent tornadoes ripped through parts of the U.S., wiping out schools and toppling semitractor-trailers in several states.

The threat of tornadoes moved east into the Mississippi Valley and Deep South on Saturday, a day after a massive storm system moving across the country unleashed winds that damaged buildings, whipped up deadly dust storms and fanned more than 100 wildfires.