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 ...

In Kentucky’s biggest city ... It’s like an ice skating rink out there in the fields.” The polar vortex of ultra-cold air usually spins around the North Pole, but it sometimes plunges ...

It is not, however, the second coming of a polar vortex, a phrase the National Weather Service's Chicago office tweeted earlier this week to describe the upcoming sweater weather. They quickly ...

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 plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in coming days and ...