Fueled by a disturbed polar vortex, 18 states and D.C. have had more snow than average into December. In some areas, snowfall ...

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

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

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

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 ...

According to the NOAA Climate Prediction Center map, Georgia is highlighted in "near or above normal" temperatures for the ...

A polar vortex is bringing another round of frigid, Arctic air to the Eastern United States. Temperatures across Tennessee are expected to drop into the low 20s and upper teens over the weekend. There ...

The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...

The polar vortex can commonly be disrupted during the winter and is known to cause an Arctic outbreak in the United States.

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

Another brutally cold weekend is on the way as a piece of the Polar vortex dips out of the Arctic Circle, sending frigid air ...