Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

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

A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

Meteorologist Rob Shackelford: Well, yes, there are actually patterns in our weather. So, there's this thing called the jet stream. It's in the upper atmosphere and it dictates a lot of our weather.