A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the ...

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic ...

We may have some warmer days ahead, but beware the dip to come in Western North Carolina. Here's how the polar vortex will affect the area.

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they ...

Meteorologists sound the alarm as frigid temperatures are expected to sweep across the U.S. South this weekend.

A polar vortex is on its way for much of Canada next week. And while it’s not the first time Canadians have faced down the chill of a polar vortex in recent years, this one is set to cause ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...

An extreme warming event high in the atmosphere is threatening to disrupt the polar vortex. We break down what that could mean for Canadians A rare, early, stratospheric warming event could shake up ...

Scientists are still trying to understand the atmospheric disturbances. A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...