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, ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

Less than a week after snow, sleet and freezing rain, we're now forecasting highs in the 70s. During its coldest point, last ...

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

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

How Alaska’s cold keeps ending up in the Lower 48 A few atmospheric factors — including the polar vortex — have come together to make the US the epicenter of cold this winter. One is a ...

The polar vortex has taken on an unexpected pattern this winter — one that’s made part of the United States the most unusually cold place on the planet, at least so far this year. While the ...

But what exactly is the polar vortex? The polar vortex is a large area of cold air and low pressure that typically remains around the North and South Poles. Imagine it as a giant whirlpool of cold ...

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 ...