Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all scientists agree. By Eric Niiler The polar vortex is a ribbon of ...

A potentially major snow storm this weekend could give way to a blast of Arctic air for the second consecutive week. The next polar vortex impact is expected to follow a storm that could dump 6 inches ...

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 ...

A potentially major snow storm this weekend could give way to a blast of Arctic air for the second consecutive week. The next polar vortex impact is expected to follow a storm that could dump 6 inches ...

When most people hear the term polar vortex, they think of extreme cold, dangerous wind chills and relentless winter weather. While the polar vortex can certainly deliver frigid air, it doesn’t always ...