The biggest storm of the winter walloped Southern California on Thursday, but by Friday morning conditions were improving as the storm subsided.

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.

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.