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

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

An Extreme Cold Warning starts overnight as an Arctic front will bring the coldest weather the Chicago area has seen since ...

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

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

After this weekend's snow storm moves out, cold Arctic air will move in.

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

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

"Potentially hundreds of thousands of people may go without electricity and heat for days, one meteorologist said ...

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