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

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

A lobe of the polar vortex, a ring of freezing air typically found near the North Pole, will once again move into the central ...

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

It has been frigid not only in the Northeast but also throughout the central United States. An extreme cold warning is in ...

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

Some of the coldest temperatures are expected in Montana, and avalanche warnings have been issued in Utah, Colorado and ...

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 ...

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 ...