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

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

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

As another winter storm hits South Carolina and other regions, here's what to know about deciphering forecaster terms.

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

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

Sudden stratospheric warming is expected to keep a weakened vortex splintered, plunging the region back to record-breaking ...

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

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and ...

A snowstorm and harsh winter weather have impacted at least 177 million people across the US ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

The polar vortex can't be felt in the United States or anywhere on Earth. Brutally cold temperatures are heading to the Midwest and Northeast this week -- but don't mistake this for a polar vortex ...