Weather report: Snow, dangerous cold headed for North America [Video]

BUFFALO, N.Y. –

The first big snowfall of the season is blanketing towns in upstate New York along lakes Erie and Ontario in the middle of the hectic holiday travel and shopping weekend, while numbing cold and heavy snow could persist into next week and cause hazards in the Great Lakes, Plains and Midwest regions.

A state of emergency has been declared for parts of New York, causing problems for scores of Thanksgiving travelers trying to return home.

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“Travel will be extremely difficult and hazardous this weekend, especially in areas where multiple feet of snow may accumulate very quickly,” the U.S. National Weather Service said Saturday.

Part of I-90 in Pennsylvania was closed Saturday, and as were westbound lanes of the New York Thruway heading toward Pennsylvania.

Nearly two feet (61 centimetres) of snow has already fallen …