Aaron Eisenhauer/The Southern Illinoisan/AP

A woman walked a dog as snow fell in Carbondale, Ill., on Wednesday.

Stephen Lance Dennee/AP

Snow covered the branches of a tree with Christmas lights during a winter storm Wednesday in Paducah, Ky.

AP

Motorists traveled slowly on a snow-covered Interstate 24 during a in Paducah, Ky, on Wednesday.

Mike Kittrell/AL.com/AP

A house in Mobile, Ala., was damaged after a tornado touched down on Tuesday.

Marvin Gentry/REUTERS

Downed trees and power lines covered a street in Mobile, Ala. on Tuesday.

NASA/NOAA/GOES Project/REUTERS

Storm clouds covered the East Coast of the US in a satellite image taken on Tuesday.

Gary Barber/The Dallas Morning News/AP

Kamela Kolander walked her dog in a snowstorm in downtown Dallas on Tuesday.