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

The polar vortex has only recently entered the popular lexicon as something to fear or shiver at each winter: But what is it? Is it a storm that's heading south from the Arctic or perhaps a new ...

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

It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it and how does it impact our weather? The polar vortex is like a ...

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

Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the North Pole. Real feel temperatures throughout the northeast, including ...

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze of January. Mother Nature seems to have something brewing, and it's not ...

Bitter cold is expected across much of the U.S. this weekend. But what do headlines mean when they say a "polar vortex cold snap" is on the way? The polar vortex is a regular feature of Earth's polar ...

SEDONA, Ariz. — The rock formation known as Kachina Woman rises like an obelisk out of a cool green canyon. At its base, more than three dozen women are tucked into crevices in the rust-colored stone, ...

With the winter on the horizon and the onset of colder temperatures drawing near, U.S. residents may question just how chilly it could become in the states this season. One factor that plays a role in ...