Air and road travelers will confront weather delays in the West, including California, as a potent atmospheric river storm slams the region.

An unusually strong storm system called an atmospheric river is dousing Southern California. More than four inches of rain fell over coastal Santa Barbara County early Friday as the storm moved south toward Los Angeles.

A strong atmospheric river is bringing impacts across California, including flooding rain to Los Angeles later this week.

A strong atmospheric river moving inland Wednesday night through Friday will bring widespread rain, mountain snow, and gusty winds across California.

A level three event on the atmospheric river scale is a long-duration, high-intensity storm that could produce flooding throughout San Diego County.

Southern California is bracing for heavy rain, gusty winds and cooler temperatures as a Pacific storm, fed by an atmospheric river, moves inland through the region.

A storm moving into Arizona from California is being fueled by an atmospheric river. Here is an explanation of what that means.