The infamous weather pattern is actually partly influencing our weather as February ends. And it may again throughout the month of March.

The polar vortex is splitting — an exceedingly rare phenomenon for this time of year that will be an unusual driver of warmer temperatures, as the calendar flips to March and meteorological spring.

The polar vortex, a high-altitude ring of westerly winds that usually keeps Arctic air locked near the pole, is showing signs of unusual weakening. If that circulation falters or collapses, the result ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...

Add Yahoo as a preferred source to see more of our stories on Google. There is a major weather pattern change underway across the U.S. As we get into next week, the storm track looks really ...

BOEING MANUFACTURE THIS KIND OF PLANE. TURNING NOW TO KCRA 3 WEATHER, AND WE WANT TO SHOW YOU THIS A LIVE LOOK AT LAKE TAHOE AFTER DAYS OF SNOWY WEATHER AND TOUGH TRAVEL CONDITIONS. HEATHER, IT’S NICE ...

Face it — "polar vortex" is fun to say. It sounds like something that could have killed a red-shirted crewmember on the original "Star Trek" television series. Maybe that's why a weather feature that ...