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 ...

A crippling winter storm that could paralyze parts of the Southern and Central U.S. this weekend, and some of the effects ...

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

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

This winter, the Northern Hemisphere has been suffering from extreme cold. In South Korea, an unusually prolonged cold wave ...

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 Tennessee.

Environment Canada has issued warnings for the cold and storm expected Sunday that could deliver up to 30 centimetres of snow ...

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

With over 170 million Americans facing below-average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in the feel of winter and park ...