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

Threat level: The heavy rains will bring a "high likelihood" of flooding, the National Weather Service warns. The greatest ...

Heavy snow and freezing rain from Kentucky to the nation's capital caused hundreds of crashes and left tens of thousands of ...

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.

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.

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

Weather balloons and “hurricane hunter” planes aid the science of understanding California’s atmospheric rivers.

A new atmospheric river will bring a new rainstorm to the Los Angeles area in the middle of the week, forecasters say.

Another atmospheric river is preparing to take aim at the Bay Area and Central California, bringing “impactful rain,” flash ...

He earned a B.A. in atmospheric sciences from Harvard University ... The jet stream is like a river of west-to-east winds in the upper atmosphere. Airplanes use it like a highway.

The first storm from the tail end of an atmospheric river brought light to moderate rain throughout the Los Angeles area.

Commuters faced white-knuckle driving conditions, gusting winds, and flooding on Bay Area roads and highways Tuesday as rain pelted the region. However, a reprieve is on the way.