Winter has settled in for the long haul, and the next few days only reinforce that feeling. Tonight brings mostly cloudy ...

In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

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

The U.S. is experiencing record-breaking cold and heavy snow this week as another winter storm sweeps across several central and eastern states. Wind chills between minus 30 and minus 60 degrees ...

Frigid temperatures are expected to impact much of the central and eastern United States in the coming weeks. The first of three polar vortex systems is expected this month, according to AccuWeather.

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...

Each of these lobes of the Polar Vortex will bring two or three days of bitterly cold, below-normal temperatures. We aren’t ...

A dangerously cold Arctic blast is poised to blanket the tri-state area. Get your warmest coats, hats, mittens and scarves ready, because Friday, and again next week, we’ll be dealing with extreme ...

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 ...