Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

Feeling that sudden chill? A triple polar vortex is sweeping across parts of the U.S. Here’s what that means — and where it’s ...

Once every two years there is a disruption of the polar vortex. So you get very strong warming like tens of degrees Celsius ...

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

There are early signs that the northeastern United States may be in for several waves of below-average low temperatures this ...

The coldest temperatures of the season so far will persist through Friday morning, with overnight lows dropping into the ...

Arctic air is taking cold to another level this week and the US could be facing bouts of it well into December thanks to the polar vortex.

There are two of these polar vortexes -- one in the troposphere that affects weather every winter, and one in the ...

A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the ...

Polar vortex systems will bring dangerously cold weather to much of the U.S. this month. Learn how to stay safe, and which ...

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

As we look toward mid-December into January, the door is opening for some potentially significant winter weather.