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 ...

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 ...

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

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

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 ...

Water, salt, and heat all get mixed within eddies with important climate consequences, but the boundary of an eddy is hard to ...