DC swings from a warm 50 weekend to a cold start to the week, with highs in the 30s and a wintry mix as the polar vortex and ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

There's a confounding dilemma for many folks trying to make sense of winter weather in the context of climate change.

Add Yahoo as a preferred source to see more of our stories on Google. The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or ...

The "polar vortex" talk becomes really popular each year. It usually doesn't surface until winter. Still, this season, the eastern U.S. is getting a shot of frigid air as this infamous polar vortex ...

The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...

It's that time of the year! An extensive and prolonged Arctic outbreak is on the way to impact much of the United States. From the Rockies through the Northeast and Southeast, temperatures will plunge ...