Evacuation orders and warnings have gone into effect for burn scar areas across Southern California as heavy rainfall threatens dangerous debris flows.

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

The NWS San Diego CA issued a flood watch at 1:49 p.m. on Monday valid from Thursday 1 p.m. until Friday 4 a.m. The watch is for San Diego County Coastal Areas, San Bernardino and Riverside County Valleys-The Inland Empire,

The National Weather Service warned that rain and flooding would intensify throughout the evening until around 10 p.m., bringing the risk of major flooding, debris flows and damaging winds.

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.

After days of heavy rain, the strongest storm of the year brought dangerous debris flows and rock- and mudslides across Southern California on Friday, including in several areas that last month were ablaze with devastating fires.

Residents in pockets across Southern California are preparing for rainstorms expected to slam the region over the next few days — and bring the potential for mudslides and debris flow in areas recently ravaged by wildfires.

Residents of a Southern California mountain community near the Eaton Fire burn scar dug out of roads submerged in sludge Friday after the strongest storm of the year swept through the area, unleashing debris flows and muddy messes in several neighborhoods recently torched by wildfires.