A major winter blast of snow, ice, wind and plunging temperatures in the U.S. stirred dangerous travel conditions from central and southern states all the way to the East Coast early Monday, prompting schools and government offices in several states to close.

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.

A powerful winter storm moving across the Midwest and Plains is producing snow and ice, causing dangerous travel conditions, and is expected to impact millions more as it moves across the country toward the East Coast.