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

With the polar vortex intensifying next week, the jet stream will acquire strength, however, in an approximate west-to-east pattern across the U.S. and southern Canada, AccuWeather senior ...

Sudden stratospheric warming is expected to disrupt the polar vortex, sending more bursts of extreme cold our way.

Waves of frigid air will continue to be released into much of the eastern United States through at least the middle of the ...

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

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

Add Yahoo as a preferred source to see more of our stories on Google. A potentially major snow storm this weekend could give way to a blast of Arctic air for the second consecutive week. The next ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and ...

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle Tennessee.

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...