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, ...

Torrential rains and mountain snow began moving into California on Wednesday, bringing a high risk of flooding, landslides in burn-scar areas and power outages.

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

Snow, sleet and freezing rain are expected to continue pummeling the central Appalachians and mid-Atlantic states, while ...

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

Heavy snow and freezing rain left tens of thousands in the dark as the central Appalachians and parts of the mid-Atlantic states are bracing for heavy rains.

Another atmospheric river storm packing heavy rain and powerful winds is taking aim at the Bay Area. Here’s what to know.