A forecast map reveals which states can expect to see “persistent cold” in the weeks ahead, after experts said the polar ...

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

A displacement of the Polar Vortex will usher in days of Arctic cold through the end of January. The core of the Polar Vortex ...

The displacement of the polar vortex over the eastern half of the U.S. will usher in days of Arctic cold through the end of ...

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

The displaced polar vortex will bring prolonged periods of cold to the eastern portion of the Lower 48 through the end of ...

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

The term ‘polar vortex’ is nothing new, but it has gained a lot of popularity over the last few years – especially with the recent Arctic cold outbreaks. The Polar Vortex is a ...

Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still around.

A significant portion of the U.S. is experiencing below-average temperatures due to a disrupted polar vortex, affecting over ...

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool ...