The storm prompted evacuation orders, as officials warned of flash floods in burn-scarred areas near the Eaton and Palisades fires and cautioned drivers to stay off the roads.

A powerful storm is bearing down on California as an atmospheric river drops through the state. While the fast-moving system will affect nearly the entire state on Thursday, of high concern is Southern California as intense rains fall on the heels of devastating wildfires — downpours that could trigger damaging floods and debris flows.

For the second time this year, Southern Californians are evacuating their homes as heavy rain threatens new destruction in areas still recovering from last month’s devastating wildfires.

As heavy rain from a large storm subsided, officials in Southern California said rock and mudslides remain a threat.

Three days of drenching rain, flooding and mudslides have forced evacuations and road closures, including a portion of the Pacific Coast Highway from Malibu and Pacific Palisades. The Pacific Palisades neighborhood of Los Angeles,