In Santa Barbara, people living in at-risk areas were told to leave by 3 p.m. Wednesday. The National Weather Service in Los Angeles said on X around 5 p.m. local time that the storm was "rapidly intensifying" over Los Angeles County.

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

An atmospheric river was pummeling Southern California with heavy rain on Thursday, prompting evacuations and school closures as officials warned about life-threatening flooding and mudslides in areas charred by the wildfires that broke out across the region last month.