Jet Stream Connection: A disrupted polar vortex often affects the polar jet stream, making it wobble and allowing cold air to push farther south while warm air moves north in other regions ...

A major winter storm will impact West Virginia and a slew of other eastern ... thanks to an expansion of the polar vortex—the area of cold air that circulates around the Arctic.

The word “supercell” may sound like hype, but they are real thunderstorms with rotating updrafts that can have serious ...

An April cold snap is expected to bring unusually cold temperatures to the eastern half of the US next week. The cold snap could impact new spring vegetation and lead to frost in some areas.

BISMARCK, N.D. (AP) — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped ... and mudslides blocked roads in Virginia. In West Virginia, where there was one ...

South of the Arctic’s polar vortex is the jet stream, a river of west to east air that flows five to nine miles above ground, and helps keep the pole’s cold air confined to the Arctic.

The polar vortex started wandering off course March 9, when its high winds suddenly switched from blowing west to east to blowing in the opposite direction. This switch normally happens each year ...

The plunging polar vortex brought subfreezing temperatures ... Oklahoma in coming days and contributing to a power outage in Virginia's capital that made the water unsafe to drink.