Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

Chicago is facing a dangerous lake-effect snow event overnight Sunday into Monday morning. A narrow, but extremely intense ...

Torres del Paine Mayor Anahi Cardenas said five people had died, including two Mexicans, two Germans and one British national. Cardenas said the difficult weather was complicating efforts to locate ...

It all starts this weekend as a cold front allows December-like air from near the North Pole to start spreading into the northern US. This front will push farther south and east through the weekend, ...

Here’s what else you need to know to get up to speed and on with your day.