Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex ...

Maps show what to expect as the cold front arrives. The polar vortex is a large area of cold air and low pressure that normally spins over the North and South Poles. During the winter months and ...

Myriad winter weather alerts and warnings remained in place across the U.S. on Tuesday as multiple states battled storms.

Most cold weather-related warnings had expired across the U.S., but frigid temperatures remained in place across much of Florida.