A powerful storm closing in on Southern California has prompted evacuation warnings for residents living near the burn scar of the Line Fire in San Bernardino County.

Crews have rushed to clear out basins designed to catch mud, rocks and other debris from tumbling into neighborhoods as damaging rains approach.

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.