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

"Another shot of arctic air is on the way for next weekend," the NWS said.

An arctic blast is on track to bring freezing temperatures to central and eastern states.

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

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

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

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 ...

As we head into the polar vortex, meteorologists are calling for up to a foot of snow in some parts of the U.S.

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

Blasts of arctic air will hit the Midwest and Eastern U.S. this week. How cold will it get in Florida?

The polar vortex is a large upper-level, low-pressure area or circulation that typically resides above the Arctic Circle.

See how the polar vortex will impact Jacksonville temperatures this week, how cold will it get?