Millions of Americans are bracing for life-threatening cold as an arctic blast driven by the polar vortex plunges ...

COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST WEDNESDAY... * WHAT...Very cold wind chills of 15 to 22 below expected ...

Another storm system will approach the area Saturday, bringing a chance of showers. The next batch of Arctic air will push into the region late Sunday. After Sunday's highs in the mid-30s ...

It's been a cold January for much of the U.S. David L. Ryan/The Boston Globe via Getty Images ...