A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the ...

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 ...

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

Three polar vortex systems are anticipated in December, and the first is expected this week, according to AccuWeather. The ...

A polar air mass from Canada is hovering over Wisconsin on Thursday, Dec. 4, bringing single-digit temperatures and negative ...

It is forecasted to be cold in the Bay State as a result of the breaking, or "displacement" of the polar vortex. According to ...

As we head into the polar vortex, meteorologists are calling for up to a foot of snow in some parts of the U.S.

It's cold now, but the next punch of Arctic air will take it to another level, and a disrupted polar vortex will keep the U.S ...

How does a polar vortex form? It's a normal pattern that tends to contain the coldest weather close to the North Pole. A ...

Expected to deliver the lowest temperatures of the season so far for much of the northeastern United States, the outbreak of ...

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...