A polar vortex will linger through much of the country for most of this February, prolonging the deep freeze for weeks to ...

Sudden stratospheric warming is expected to keep a weakened vortex splintered, plunging the region back to record-breaking ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A major weather pattern change underway across U.S. As we get into next week, the storm track looks really interesting.

While much of the eastern U.S. has been frozen by rounds of Arctic air and snow, the West has experienced weeks of ...

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

A couple of warmer afternoons will give the false impression of a danger in the winter: that the winter has finished its ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms.