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

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast. Here's the forecast.

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

What is the polar vortex? Mississippi weekend weather forecast calls for winter storm with lows in the teens, paired with ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and what might happen next.

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

Similarly, wind chill temperatures measure how cold people and animals feel when outside, measuring the rate of heat loss from exposed skin caused by wind and cold. As wind strengthens, it draws heat ...

NOAA's National Weather Service and AccuWeather weather forecasters say La Niña is pushing in a powerful polar vortex and a bitter Arctic blast of cold air to the Northeast this weekend. And snow in ...