Dangerous below-freezing temperatures with even colder wind chills were also expected to last over much of the week in the region. Authorities say three people have died in the cold weather.

Winter storm warnings remained in effect on Wednesday in eight states from Louisiana to Virginia. A blizzard warning was issued for the first time along parts of Louisiana's coast. Heavy snow, sleet and freezing rain were expected to continue Wednesday from Florida to North Carolina.

A rare winter storm charging through Texas and the northern Gulf Coast on Tuesday has closed highways and airports and prompted the first blizzard warning for southeast Texas and southwest Louisiana.