The polar vortex’s icy grip on much of America has Arctic Greenland seeming like a toasty vacation spot by comparison.

"An Arctic air mass is expected to plunge into the Central U.S. this week, with high confidence for widespread, ...

The National Weather Service has issued extreme cold warnings for millions of Americans from the Canadian border to Texas.

Another arctic blast has sent temperatures plummeting across the United States, bringing “life-threatening” wind chills and ...

The polar vortex is not synonymous with cold snaps, but when it slides toward the United States, the polar jet stream can ...

The polar vortex, as explained by the National Weather Service, is a large area of low pressure and cold air that encircles ...

Harsh weather moved west as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people, ...

WASHINGTON — 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 ...

FOX Forecast Center / FOX Weather The polar vortex has returned to the U.S., and ... National Weather Service offices across the nation have issued Cold Weather Advisories and Extreme Cold ...

Computer forecast models say that the polar vortex is likely to stretch again, sending cold air south somewhere and probably to the United States, around March 5, Cohen said. This is quite late ...

BISMARCK, N.D. — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the Eastern U.S ...