Don't let the incoming string of relatively warm days in the greater Philadelphia region fool you; the polar vortex is still around.

When parts of the vortex break down, lobes of Arctic air can drift south, guided by changes in the jet stream. This allows ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they work.

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to ...

The Vortex Theatre in Albuquerque is opening its landmark 50th anniversary season with one of Shakespeare’s most beloved ...

The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...

Director James Cady hopes his audience experiences a sense of relief, joy and catharsis as they watch his iteration of “A View from the Bridge.” “It’s capable to have those emotions all at the same ...