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

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

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

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

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.

More snow is on the way for southern Ontario, with a widespread shot occurring on Wednesday. That will be followed by ...

A polar vortex disturbance will drive a winter storm in Kentucky, with snow, frigid temps, and wind chills below zero ...

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

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

The incoming Arctic blast will bring very cold temperatures to West Michigan, but it still falls short of the historic, ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

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