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

The easy answer is a deep southward dip in the polar jet stream that typically rings the globe at higher latitudes but is ...

The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.

Meteorologists had predicted that parts of the U.S. would experience the 10th and coldest polar vortex event this season.

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

A polar vortex is bringing historic low temperatures to millions across the country as a winter storm slams the Mid-Atlantic region. CBS News national correspondent Dave Malkoff reports from Virginia ...

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

The arctic outbreak that has enveloped the central U.S. is hitting its peak Thursday as frigid temperatures continue to ...

After a winter storm brings snow, ice to several states, Mississippi will see Arctic air from the polar vortex for a few days ...

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

Ushering in the polar vortex is a winter storm, which was tracking from the Midwest toward the East Coast on Saturday. In ...

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