An expert at the Scripps Institution of Oceanography explains the weather phenomenon that can wreak havoc across California.

Storms dumped heavy snow and freezing rain on a swath of the eastern U.S. stretching from Kentucky to the nation’s capital, ...

A new rain storm is bearing down on California, including fire-ravaged Los Angeles, where residents are bracing for the possibility of mudslides and landslides.

Southern California is in desperate need of rain, but it could come far too fast this week, especially in areas recently ...

An atmospheric river is expected to bring torrential rain to California this week, threatening parts of the state with flash ...

Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific ...