Add Yahoo as a preferred source to see more of our stories on Google. An Arctic outbreak is in the forecast this weekend for the eastern half of the country. Even Texas will see a 20- to 30-degree ...

A shift in the polar vortex earlier this spring is helping to set the stage for repeated chilly stretches across the central and eastern United States in the weeks ahead, with below-average days ...

A strong polar vortex and 'super' El Niño are developing, leaving experts split on how they could Tennessee winter.

Another brutally cold weekend is on the way as a piece of the Polar vortex dips out of the Arctic Circle, sending frigid air across half of the United States while the other half warms up. Texas will ...