This cold blast could be relatively short-lived, with a return to more typical wintry temperatures by later in December.

That’s what’s happening this weekend: a stretched polar vortex is helping send arctic air deeper into the United States, ...

The United States is expecting another hit by the polar vortex starting this weekend. Here's what's expected in South ...

We may have some warmer days ahead, but beware the dip to come in Western North Carolina. Here's how the polar vortex will affect the area.

The northern U.S. is bracing for bone-chilling cold as a weakened polar vortex pushes Arctic air south. How cold will ...

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

Year-round, severe, artic air is usually kept tightly contained in the North Pole. Arctic wind patterns create a sort of wall ...

Weekend weather is expected to drop below freezing over Oklahoma City before warming back up on Monday afternoon.

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 ...

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

A huge filament of solar plasma has broken off the sun's surface and is circling its north pole like a vortex of powerful winds, but scientists have no clue what caused it. "Talk about polar vortex!

Three images of Uranus that are blue, green and red showing a weird bright spot A vortex of relatively warm air has been detected swirling beneath Uranus' clouds, providing strong evidence for the ...