A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

The first cold wave will reach the East Coast on Thursday, followed by another surge of frigid air this weekend and more next ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

Here’s the wind chill chart. Notice the four shadings, indicating how long it will take for frostbite. When we get to wind ...

Winter has settled in for the long haul, and the next few days only reinforce that feeling. Tonight brings mostly cloudy ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

And it won’t just feel cold: A series of clipper storms is also expected to bring snow to the region beginning on the evening ...

In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

A major polar vortex is about to impact the United States — and it could usher in weeks of frigid temperatures for millions of people, even bringing snow to Florida.