A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

The polar vortex is an extensive area of low pressure and cold air surrounding both the Earth's poles, weakening in summer ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

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

The polar vortex will push Artic air south, and a severe winter storm could follow. How cold will it get in Louisiana?

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

"Bitter cold could linger through the end of the month," the Weather Prediction Center said in an update on Monday.

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

Strong winds, frigid temperatures, and snowfall moved across several states during the course of the last few days, and for ...