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

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

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

Current forecast models show the circulation of the Polar Vortex weakening later this week into the weekend. As this occurs, ...

Uncertainty remains high regarding all aspects of any snowfall, and those who will be in the Midwest and Northeast should monitor forecast changes as the week progresses.

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 ...

Early-season stratospheric warming events spark hype around frigid temperatures. Learn the myths and the science about the polar vortex.

As one blast of Arctic air pushes out to sea, already a new surge of cold air, driven by a breakdown of the polar vortex, is ...

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

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

Dr. Amy Butler with the National Oceanic and Atmospheric Administration says the early polar vortex disruption is unusual and ...

A cold front from an expanding polar vortex brought chilly temperatures to North and Central Florida. Temperatures are expected to fluctuate, with more cold fronts arriving late Wednesday and early ...