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

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 ...

As the Bay Area prepares for another round of storms, a new Stanford study explains just how much damage atmospheric rivers ...

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

Southern California faces a risk of damaging debris flows this week, as a potentially strong atmospheric river is set to arrive in the region.

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 ...