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

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

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

The Chicago Cubs watch the Milwaukee Brewers trade away another star, while Chicago White Sox fans dream of the call-up of top hitting prospect Braden Montgomery.

A powerful winter storm, influenced by a polar vortex, is impacting much of the U.S., bringing heavy snow, ice, and extreme ...

“‘With the extreme cold temperatures, expect prolonged snow and ice impacts which may include hazardous travel conditions, ...

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

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

Add Yahoo as a preferred source to see more of our stories on Google. Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at ...

Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...

Meteorologists are currently monitoring a massive atmospheric anomaly as a significant disruption of the polar vortex begins to take shape this January. Researchers describe the current movement as ...