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

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...

Frigid temperatures are expected to impact much of the central and eastern United States in the coming weeks. The first of three polar vortex systems is expected this month, according to AccuWeather.

Ready for some serious cold? The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said Weather Trader ...

The wall that keeps cold air contained in the Arctic is called the polar vortex. There's been a "displacement" in the polar vortex, which allows Arctic air to escape to the south. An "arctic frontal ...

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 ...

A polar vortex is expected to bring a "mega-dump" of cold air to the central and eastern United States. Western North Carolina will experience a temporary reprieve before temperatures plummet over the ...