A long-awaited blast of cold air, courtesy of the polar vortex, will overtake much of the US, but the forecast says the low ...

A fresh shot of Arctic air could bring the coldest air of the season for many this week, according to AccuWeather ...

This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

NEW YORK — Millions along the Interstate 95 corridor on the Northeast Coast will see their first significant winter storm of ...

Feeling that sudden chill? A triple polar vortex is sweeping across parts of the U.S. Here’s what that means — and where it’s ...

The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

An arctic blast is on track to bring freezing temperatures to central and eastern states.

Most of Virginia is expected to receive 1-4 inches of snow on Monday, just three days after a similar snowfall covered all ...

More Arctic air is building over northern Canada and will be directed into the United States, courtesy of the polar vortex. How long will the cold waves last? Will it stay cold through Christmas?

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 expect in Tennessee.

Computer models predict that the U.S. will get blasted with extreme cold in December. How will the Pensacola area be impacted ...