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

Cold temperatures are expected to last through the end of the month — and forecasters say that there's a potential for snow ...

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

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

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

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...

Colder air is returning to the central and eastern U.S. as the polar vortex becomes more active, bringing fluctuating ...

The polar jet stream, which is affected by the polar vortex above it, has become quite wavy, allowing Arctic air to ...

Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

Each of these lobes of the Polar Vortex will bring two or three days of bitterly cold, below-normal temperatures. We aren’t ...

HOUSTON, Texas (KTRK) -- Over the past week, viewers have been coming to the ABC13 Weather Team with questions about a possible arctic blast later this month. Those rumors came from a weather blog in ...