LOS ANGELES (AP) — An unusually strong storm system, known as an atmospheric river, has been pouring rain across Southern California, triggering flood warnings in coastal areas of Los Angeles County that were recently affected by wildfires. The National Weather Service (NWS) reported heavy rainfall rates on Saturday, reaching up to an inch per hour in flash flood-prone regions. On Friday, the storm brought over four inches of rain to coastal Santa Barbara County as it approached Los Angeles while the NWS advised residents to remain indoors due to high winds.

This long plume of tropical moisture originating from the Pacific Ocean began impacting the San Francisco Bay Area on Wednesday before unleashing widespread rainfall across Southern California that continued on Friday and Saturday. Predictions indicate that some parts of the Sierra Nevada could see over a foot of snow.

Flood warnings are now in effect from the coast of Ventura County, through Malibu, and into the City of Los Angeles. Los Angeles Mayor Karen Bass reported on social media that an Evacuation Warning is still in effect in areas surrounding recent burn scars due to the potential for debris flows.

Mandatory evacuation orders have been put in place for specific high-risk properties in the Palisades and Eaton fire burn areas from Friday evening until Sunday morning. Law enforcement has been tasked with notifying residents in these areas to evacuate, as officials remain vigilant about the dangers posed by this intense storm.