Over 75% of the US expected to face freezing temperatures this week as rare winter storm barrels toward the South | Weather [Video]

(CNN) — 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.

Travelers are facing delays Sunday and cold is in store for much of the nation, with more than 75% of the US expected to face freezing temperatures this week.

Over 70 million people are under winter weather advisories and winter storm warnings from Tennessee to Maine on Sunday. That means snow for many Northeast cities, as a low-pressure system will bring a quick shot of snow to the I-95 corridor from Virginia to Maine on Sunday through early Monday.

Washington, DC, is expected to see 1 to 3 inches of snow, with up to 6 inches expected in New York and Boston. Hartford, Connecticut, could see 5 to 7 inches of snow …