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

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 ...

The region will see a sharp drop to sub-zero and single-digit temperatures as a dangerously cold Arctic front passes through.

Some light snow is possible across much of New Jersey on Friday night after an Arctic blast of much frigid air could ...

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

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

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

Most of Virginia is expected to receive 1-4 inches of snow on Monday, just three days after a similar snowfall covered all ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they ...

Polar vortex will hit the U.S. with three waves of snow, extreme cold and storms. Will Mississippi weather feel the chill?

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

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to ...