Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, ...

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

Heavy rain from the latest atmospheric river triggered flood warnings in several Bay Area counties and evacuations in Santa ...

Days after an atmospheric river brought record-setting rainfall to California, the state is in the crosshairs of another ...

The weather phenomena are common for California winters, but they could cause dangerous debris flows or mudslides in recently ...

A flood watch is in effect from 10 p.m. Wednesday through 10 p.m. Saturday for Marin, Monterey, San Francisco, San Mateo, ...