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All 50 States Face Winter Whack; 5 Feet of Snow Forecast Near Buffalo

All 50 states will see freezing temperatures on Tuesday, with millions of Americans facing another bitter blast of unseasonably cold air. Up to five feet of snow was possible south of Buffalo, New York, due to an "historic but highly localized lake effect snow event," according NBC News meteorologist Bill Karins.

An arctic blast has socked the nation for days, causing at least 17 deaths since Saturday. While last week's freeze focused on the Rockies and the Plains, the Midwest, Northeast and South shivered overnight. By 2:25 a.m. ET, Buffalo and Erie, Pennsylvania, had been buried under around two feet of snow.

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Karins said up to 100 record lows are expected Tuesday morning. The National Weather Service said "well below average" temperatures will stretch to the Gulf Coast — with most Mid-Atlantic states struggling to get above freezing on Tuesday.