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

And it won’t just feel cold: A series of clipper storms is also expected to bring snow to the region beginning on the evening ...

Polar vortices exist throughout the year at the poles. In the Northern Hemisphere, the polar vortex expands many times over ...

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...