A major storm continued to wallop much of Southern California on Thursday morning, bringing evacuation warnings, fears of mudslides and heavy mountain snow.

The same powerful storm that battered Southern California with heavy rain and brought blizzard conditions to the San Bernardino Mountains is putting millions on alert from coast to coast.

A tornado hit Southern California this morning amid an atmospheric river that is bringing rain, flooding and mudslides to the state. No one was injured by the tornado that hit Los Angeles County, but winds toppled trees and littered debris around Pico Rivera.

On Thursday, the storm was bringing heavy snow and strong winds to the Sierra Nevada and heavy rainfall over parts of coastal southern California.

Numerous significant tornadoes are expected Saturday afternoon and evening, with the highest risk across several states in the Deep South, forecasters say.

A sweeping storm system moving across the U.S. threatens to bring tornadoes, blizzards and possibly wildfires to different regions of the country