You've probably come across the words polar vortex a few times already during this winter season. Maybe you're familiar with what it truly means, or maybe not. We're here today talking about exactly w ...

Add Yahoo as a preferred source to see more of our stories on Google. Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march across ...

A winter buzzword, explained.

The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...

Snow season has gotten off to a fast start across swaths of the northern United States this year. Fueled in part by an unusually early disruption to the polar vortex — which is now easing — 18 states ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

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. When Arctic air surges into the U.S., the polar vortex ...