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

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

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

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

A polar vortex is bringing at least two cold waves to Florida this week, with temperatures in northern Florida dropping into ...

A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the ...

Just in time for the holidays, a polar vortex is bringing the temperature down in Florida — here's what's in store for the ...

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 ...

If you couldn’t get enough of the cold temperatures in early December, there’s more on the way for Tennessee this coming weekend. A polar vortex is bringing Arctic air into the United States, and ...

The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...