A major atmospheric river storm is barreling toward California, raising the specter of damaging landslides and flooding across much of the Southland.

An atmospheric river is slamming portions of California, with multiple inches of rain expected to drench the area until the storm runs out of moisture Wednesday morning, forecasters say.

A jogger and a dog are bundled up as they run in the rain in downtown Los Angeles on Wednesday. (Allen J. Schaben / Los Angeles Times) ...

Rainfall rates could reach more than 1 inch per hour on Tuesday. An atmospheric river is pounding Northern California with heavy rain and the threat of flooding before heading to Southern California.

An atmospheric river gathers moisture from the tropics and moves it inland. California will see heavy rain and snow in some areas, mostly in the north. Arizona will not only remain dry ...