LOS ANGELES — A storm of historic proportions dumped a record amount of rain over parts of Los Angeles on Monday, sending mud and boulders down hillsides dotted with multimillion-dollar homes while people living in homeless encampments in many parts of the city scrambled for safety.
More than 1 million people statewide were without power.
The storm was the second one fueled by an atmospheric river to hit the state over the span of days.
Virtually all of Southern California was under flash flood advisories and watches, including the Los Angeles area, where between 5 and 10 inches (12.7 to 25.4 centimeters) of rain had fallen and more was expected, according to the National Weather Service.
Crews were rescuing people from swift-moving water in various parts of Southern California.
Among those rescued were two homeless people who spent the night on a small island in the Santa Ana River in San Bernardino, about 55 miles (88.51 kilometers) east of Los Angeles, authorities said.
“They were cold and exhausted from a night out stranded on this little patch of dirt that was in the middle of the river,” said Capt. Nathan Lopez of the San Bernardino County Fire Department. A dog and two cats were also saved.
Near the Hollywood Hills, gushing rivers carried mud, rocks and household objects downhill as floodwaters coursed through Studio City, damaging at least two homes, city officials said. Sixteen people were evacuated.
“It looks like a river that’s been here for years,” said Keki Mingus, whose neighbors’ homes were damaged. “I’ve never seen anything like it.”
The Los Angeles Fire Department said 1,000 firefighters were contending with 49 debris flows, 130 reports of flooding, half a dozen structure fires and several rescues of motorists stranded in vehicles.
Drake Livingston who lives in the Beverly Crest neighborhood, was watching a movie around midnight when a friend alerted him to flooding.
“We looked outside and there’s a foot-and-a-half of running water, and it starts seeping through the doors,” said Livingston, whose car was found submerged in several feet of mud in the morning.
Los Angeles Mayor Karen Bass urged residents to avoid driving, warning of fallen trees and electrical lines on flooded roadways.
A record 4.1 inches (10.41 centimeters) of rain fell Sunday in downtown Los Angeles, making it the 10th wettest day on record, the National Weather Service said. That’s more rain than the area typically gets for the entire month.
Shelters were adding beds for the city’s homeless population of nearly 75,000 people.