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

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.

What is polar vortex and how much snow is expected in US? A winter storm linked to polar vortex disruption has impacted ...

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

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

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

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.

A snowstorm and harsh winter weather have impacted at least 177 million people across the US ...

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

The polar vortex will push Artic air south, and a severe winter storm could follow. How cold will it get in Louisiana?