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 ...

And don't even ask what the wind chills were in these locations. SEE ALSO: The polar vortex is going to punch you in the face, repeatedly In Chicago, the temperature was a big round goose egg at 9 ...

The polar vortex is headed toward the US, expected to bring record-breaking cold to the Northeast, upper Midwest, and Great Lakes by this week. It's so cold that it could give people frostbite in ...

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 ...