Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...

T​he season's most drastic drop in temperatures is now plowing through the central and eastern states with dangerous wind ...

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

Extreme cold could expose residents of several states to conditions like hypothermia and frostbite over the weekend.

The coldest air of the season will descend across the U.S. this weekend and early next week, bringing subzero wind chills ...