Major winter storm threatens much of the U.S. with intense cold, snow and ice

 NBC News Top StoriesTens of millions of Americans braced Sunday for a massive winter storm, expected to bring the heaviest snowfall and coldest temperatures in over a decade to parts of the country.

​Tens of millions of Americans braced Sunday for a massive winter storm, expected to bring the heaviest snowfall and coldest temperatures in over a decade to parts of the country.  

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