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

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

Something unusual may be brewing in the stratosphere, and meteorologists say it could change the course of the winter forecast. The atmosphere is at a "critical juncture," and what happens in November ...

An Arctic blast is expected to bring below-average temperatures to the central U.S. and New England in late November and early December. A weakening polar vortex, influenced by a rare weather ...