Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, ...

A powerful polar vortex slams an already-frozen state as NOAA warns the deep freeze could last for weeks, bringing extreme ...

Those struggling with high heating bills due to relentless cold and sore backs from shoveling snow in the Midwest and ...

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

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 ...

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