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

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south. The center of this ...

The polar vortex is bringing bitter cold and snow to NJ this weekend. Here's the weather forecast, from timing to how much ...

A major polar vortex is about to hit the US and could bring weeks of frigid temperatures for millions, with even a chance of ...

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 ...