A forecast map reveals which states can expect to see “persistent cold” in the weeks ahead, after experts said the polar vortex would unleash waves of icy air across parts of the U.S. through January.

Welcome to 'false spring,' New Jersey! A polar vortex split could bring bitter cold back to NJ, but how cold will it get and ...

Welcome to 'false spring,' New York! A polar vortex split could bring bitter cold back to NY, but how cold will it get and when? The latest forecast ...

Add Yahoo as a preferred source to see more of our stories on Google. This winter’s harsh run is intensifying, with some of the coldest air so far this season plunging into New Hampshire this weekend ...

And the dreaded polar vortex will again invade the Midwest and East with soul-crushing Arctic chill. This forecast of ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest, Mid-Atlantic and Southern U.S. are expected to see below-freezing ...

The Great Lakes and Northeast are bracing for another cold shot later this month — down to single digits in places. How cold ...

New Yorkers should prepare for one last noticeable chill from the polar vortex before spring takes hold, with below-average ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...