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

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

A polar vortex from Canada will descend into the United States this weekend, creating frigid conditions in the midwest and, later, the east coast. Temperatures are expected to hover in the single ...

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

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

The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a ...

Administratia Nationala de Meteorologie a actualizat evoluţia vortexului polar, spunând că "procesele dinamice și ...

A polar vortex system is expected to bring two or more cold waves to Florida this week. Temperatures in North Florida could ...

Will the polar vortex change Alabama’s winter outlook and could it set the stage for a white Christmas? Here’s what we know ...

This coming weekend, the central and eastern United States will receive a blast of Arctic air, which will also affect ...