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

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

There are strong upper-level winds rotating around the North Pole that normally keep all cold air contained, but in the ...

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...

Here’s the wind chill chart. Notice the four shadings, indicating how long it will take for frostbite. When we get to wind ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

The incoming Arctic blast will bring very cold temperatures to West Michigan, but it still falls short of the historic, ...

An unusually brutal winter storm is set to pummel more than 160 million Americans from Friday, as a stretched "polar vortex" sends a devastating blast of Arctic air, bringing heavy snows and freezing ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

If you couldn’t get enough of the cold temperatures in early December, there’s more on the way for Tennessee.