Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific storm. Here's what you need to know about this threat.

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

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

At atmospheric river continues to slam portions of California Tuesday, with multiple inches of rain expected until Wednesday morning.