An impending polar vortex is set to plunge temperatures across the eastern US into the 30s and 40s. The National Weather Service warns of significant cold and snow.

WASHINGTON (AP) — The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been ...

Polar vortex, the sequel Around 105 million people in the United States experienced subzero temperatures during the first polar vortex episode in January. Now, the pattern is returning: More than 80 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — The polar vortex hit its ...