The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.

A major weather pattern change underway across U.S. As we get into next week, the storm track looks really interesting.

After this weekend's snow storm moves out, cold Arctic air will move in.

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

The bitter cold temperatures that have left a chill over the eastern half of the country aren’t going anywhere, as a major disruption to the Polar Vortex is coming this month.

A polar vortex will linger through much of the country for most of this February, prolonging the deep freeze for weeks to ...

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool of the coldest air in North America that typically hovers high in the ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here's what to know.

A shift in the polar vortex has forecasters watching closely as the coldest air of the season approaches. Here's what to know ...

The bitter cold temperatures that have left a chill over the eastern half of the country aren't going anywhere, as a major ...

Add Yahoo as a preferred source to see more of our stories on Google. After a brief stretch of milder weather, colder air is set to return to the Poconos as the polar vortex becomes active over the ...