Heavy snow is a term thrown around just before a major storm, but there is a standard definition used by the National Weather ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

Global warming changed the behavior of the jet stream, and a new pattern is now clear: sapping moisture from the West Coast ...

A new winter storm will bring rain and some of the coldest temperatures of the season to the southeastern United States, ...

Because of the frigid temperatures, 12 million people from the Southwest to the Southeast are under freeze alerts beginning Saturday night.

The polar vortex of ultra-cold air usually spins around the North Pole, but it sometimes ventures south into the U.S., Europe and Asia. Some experts say such events are happening more frequently, ...

Parts of Georgia and Carolinas are digging out from a winter storm on Saturday after it produced heavy snow, freezing rain ...

The Montana and Wyoming mountains will see the heaviest snow, with up to 2 feet expected until 6 p.m. local time on Sunday.

Sorry, this video is not available, please check back later.

The winter storm across parts of the United States has forced hundreds of cancellations and delays around the southeast.

While the California wildfires and winter storms are not related to the same weather system, they are influenced by broader ...