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

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

Frigid Arctic air is pushing south into the United States, and fortunately, it doesn't look like freezing temperatures will ...

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 ...

According to Cincinnati.com, the polar vortex broke, which, again, is a common phenomenon. "The North Pole is covered by the polar vortex, a massive circular upper-air weather system in the Arctic," ...

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

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 ...

There are early signs that the northeastern United States may be in for several waves of below-average low temperatures this ...

The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...

A new wave of intense winter weather is preparing to sweep across the United States, as meteorologists warn that a triple-dip ...

Will the polar vortex change Alabama’s winter outlook and could it set the stage for a white Christmas? Here’s what we know so far.

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...