Despite being notorious for bringing brutal cold and dangerous wind chills, the polar vortex has a surprising upside.

The North Pole is surrounded by a massive circular upper-air weather phenomenon in the Arctic called the polar vortex. It is ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

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

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

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.

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

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

After this weekend's snow storm moves out, cold Arctic air will move in.

It exists all the time, but it usually gets stronger in winter. When the jet stream (a river of wind) bends and dips south, ...