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

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 ...

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 Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

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.

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 ...