Winter isn't just knocking anymore. It's kicked the door wide open and brought the polar vortex along for the ride. If you've ...

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

Feeling that sudden chill? A triple polar vortex is sweeping across parts of the U.S. Here’s what that means — and where it’s ...

Polar vortex systems will bring dangerously cold weather to much of the U.S. this month. Learn how to stay safe, and which ...

A growing body of research indicates that polar vortexes are likely becoming more frequent due to the climate crisis.

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

"With rounds of sub-zero temperatures expected in portions of the Plains and Midwest, widespread lows in the teens and 20s ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

More Arctic blasts could follow in the coming weeks before tapering off after the middle of the month. Those cold stretches ...

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 ...

Computer models predict that the U.S. will get blasted with extreme cold in December. How will the Pensacola area be impacted ...