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 ...

Every winter, millions of people brace for news about the polar vortex - that vast, spinning mass of frigid Arctic air high ...

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 ...

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 ...

The weather forecast is looking promising for warmer weather as the calendar turns to March. In the East, a dramatic warm-up is in the forecast, and the Climate Prediction Center's outlook for March 6 ...

A polar vortex split is expected to bring frigid Arctic air and single-digit temperatures to Ohio and the Great Lakes region later this month. The event is a full split of the vortex, which could lock ...