Virginia State Police responded to 650 crashes ... (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday ...

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 ...

Data from a polar vortex splitting during 2002’s Southern Hemisphere sudden warming event helps expand models to accommodate ...

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 ...

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 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.