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 ...

The polar vortex may lead to severe weather conditions ... as well as parts of Kentucky, Virginia, Georgia, Alabama, Virginia ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

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

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

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

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.