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

Dr. Amy Butler with the National Oceanic and Atmospheric Administration says the early polar vortex disruption is unusual and ...

The polar vortex, a high-altitude ring of westerly winds that usually keeps Arctic air locked near the pole, is showing signs ...

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

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

The Arctic polar vortex is expected to move south, which some say will lead to the coldest, harshest winter in years. Wyoming ...

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

Although a major winter outbreak is not guaranteed, forecasters are watching for below-average temperatures to develop in the world’s mid-latitudes over the next month.

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 rare stratospheric warming event high above the Arctic could disrupt the polar vortex and send colder air toward Texas in ...

A new wave of intense winter weather is preparing to sweep across the United States, as meteorologists warn that a triple-dip ...

Thanksgiving is less than a week away which means the fall season is ending. With it comes colder temperatures from an ...