Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still ...

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

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 ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation ...

Three polar vortex systems are anticipated in December, and the first is expected this week, according to AccuWeather. The ...

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

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...