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

About 230 million people will face temperatures of 20 degrees or colder and about 150 million likely will be hit by snow and ...

A gargantuan winter storm, aided by a deep surge of Arctic air, is forecast to affect over half of the population in the United States, delivering widespread hazardous weather, such as heavy snow and ...

A polar vortex is settling over the eastern United States, and temperatures are expected to fall into the weekend, bringing ...

A shift in the polar vortex has forecasters watching closely as the coldest air of the season approaches. Here's what to know ...

A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 ...

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

A major ice storm is expected to impact multiple states from Texas to Georgia this weekend, ...

What is the polar vortex? Mississippi weekend weather forecast calls for winter storm with lows in the teens, paired with ...

In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still around.

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