A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

It's already a lot to endure frigid winter conditions, but what happens when we get an unwelcome visit from an even colder spell of air like a polar vortex? "A polar vortex is simply that: a vortex ...

The polar vortex is in its final month as the condition that kills it is now occurring. The polar vortex is a swirling vortex most often centered over the top of the globe and hovers over the north ...

PITTSBURGH — January was a mild one for Pittsburgh, with the monthly temperature almost two degrees above average. Snowfall finished a half an inch above average. Back in mid-January, we told you how ...