Most of the United States is being assailed with extreme winter weather this week as Arctic air blasts south from Canada, snow tracks up the Northeast coast and a potentially crippling winter storm takes aim at the South.

The snow storm could hit over a dozen states through Wednesday, including Texas, Louisiana, Mississippi, Alabama, Florida, Georgia and the Carolinas.

Snow and sleet started falling in Texas as officials begin to close schools and airports. Snow and ice could bring major travel disruptions and power outages from Texas to Florida.