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

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

According to a forecast map shared by the agency, the states with the highest probability of seeing below average ...

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

There are two of these polar vortexes -- one in the troposphere that affects weather every winter, and one in the stratosphere that contains much colder air but only affects the s ...

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

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

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

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

It is forecasted to be cold in the Bay State as a result of the breaking, or "displacement" of the polar vortex. According to ...

Another year of low sea ice is shaping Arctic weather patterns, and Minnesota is feeling the effects. Plus, it's putting ...