Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

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

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

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

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

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

"Bitter cold could linger through the end of the month," the Weather Prediction Center said in an update on Monday.

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

"Potentially hundreds of thousands of people may go without electricity and heat for days, one meteorologist said ...

If you couldn’t get enough of the cold temperatures in early December, there’s more on the way for Tennessee.

The polar vortex is unleashing an extreme cold wave across the United States, bringing a historic arctic blast, violent ...

The United States is facing a storm unlike any seen in a long time. The National Weather Service has confirmed a blast of ...