This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

Much of the U.S. will experience the cold weather, with Floridians facing the threat of frost later this week.

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

According to a forecast map shared by the agency, the states with the highest probability of seeing below average ...

Current forecast models show the circulation of the Polar Vortex weakening later this week into the weekend. As this occurs, ...

The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

Uncertainty remains high regarding all aspects of any snowfall, and those who will be in the Midwest and Northeast should monitor forecast changes as the week progresses.

As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is ...

If you couldn’t get enough of the cold temperatures in early December, there’s more on the way for Tennessee this coming ...

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are ...

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

Another round of bone-chilling air from the Polar Vortex could invade the central and northeastern U.S. this weekend and ...