A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what ...

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 ...

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 ...

The term "polar vortex" seems to be popping up in weather forecasts more and more often, ever since North America got blindsided by a stunningly frigid winter back in 2014. The polar vortex isn't a ...

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.

Three polar vortex systems are expected to bring an Arctic chill to parts of the United States over the next few weeks. The Old Farmer's Almanac and NOAA have conflicting predictions for the upcoming ...

Three polar vortex systems are expected to bring frigid temperatures to several states in December. The first wave of Arctic air is anticipated this week, with two more to follow in the coming weeks.