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 ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

Three separate rounds of Arctic air have already swept across the central and eastern United States through mid-December, courtesy of a displaced polar vortex positioned near Hudson Bay, Canada. If ...

It’s a pattern responsible for holding back the coldest temperatures on the planet. The lowest readings ever recorded in Canada and around the northern hemisphere occurred when this Arctic feature ...

This winter’s harsh run in the East is intensifying, with some of the coldest air so far this season plunging into New York this weekend as a mass of Arctic air drops south from Canada. "A brutally ...