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

A winter buzzword, explained.

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

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 ...

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

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

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

Frigid wind chills of -50 degrees and lower hit parts of the Midwest early this week – with some seeing high temperatures below 0 – all thanks to the polar vortex. But, what the heck is the polar ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

ORLANDO, Fla. – Polar vortex. Sudden stratospheric warming. The winter buzz words are back. But what do they mean? Here’s the deal. You may hear polar vortex and sudden stratospheric warming thrown ...

The polar vortex is sending arctic blasts and chilly temperatures to most of the United States, and states from Texas to Oklahoma could see snow, sleet and ice. As of Wednesday, Jan. 21, millions of ...