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

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

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 ...

High above the Arctic, scientists are tracking a major change in the atmosphere this January, an event similar to what ...

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

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

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

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

A 2025 satellite image shows a series of ghostly ice swirls sculpted on the surface of Lake Michigan by strong winds during ...