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

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

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

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

Cold temps are not uncommon in January, but the polar vortex-related extremes the Elgin-area will see Friday are downright ...

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

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

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south. The center of this ...

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

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

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