SAN FRANCISCO — Tens of thousands of people lost power after a powerful winter storm swept through Northern California, while another storm system in the southern part of the state unleashed mudslides in wildfire burn areas and trapped motorists on a major highway.
The deluge loosened hillsides where a major blaze burned last year in and around Malibu, clogging the Pacific Coast Highway with mud and debris.
A stretch of the scenic route northwest of Los Angeles was expected to remain closed in both directions until Monday while crews tow away stuck vehicles and clear lanes. No injuries were reported.
The rapper Soulja Boy was among those whose cars were mired in the muck that was up to 4 feet deep in some areas.
The 28-year-old retweeted a photo of the mudslide and posted: “My car got stuck too almost went into the ocean,” along with a prayer emoji.

Nearly Three-Quarters of an Inch of Rainfall in One Hour

An automated rain gauge in the western Santa Monica Mountains showed nearly three-quarters of an inch of rainfall in one hour, said the National Weather Service.
“These are heavy rates,” the weather service tweeted.

Up to 1 ½ inches of rain fell in coastal and valley areas, while mountain communities got heavy snow.
Flash-flood watches and warnings were eventually lifted for areas burned by the fires that scorched more than 155 square miles of brush and timber acres in November, destroyed about 1,600 structures and claimed three lives.
The sun emerged in Los Angeles on Sunday and the red carpet for the evenings Golden Globe remained dry.
To the north, wind and rain forced delays or cancelations of flights out of San Francisco International Airport for a second day.
Strong winds and downed trees knocked out electricity for at least 80,000 customers across the Sacramento region Sunday night. The National Weather Service said Sunday that winds gusted up to 49 mph.

Avalanche Warnings in Parts of California, Nevada, and Utah

Avalanche warnings were posted in parts of California, Nevada, and Utah. The Sierra Avalanche Center issued a backcountry avalanche warning for the Lake Tahoe area stretching south into the Sierra along the California-Nevada line from noon Sunday until 7 a.m. Monday.

The National Weather Service says blizzard conditions with gale-force winds could trigger widespread avalanche activity.
Two feet of snow was reported at Mammoth Mountain 150 miles south of Tahoe. More than a foot fell in the upper elevations around Tahoe, including 19 inches at Squaw Valley.
Windstorms that pummeled parts of Washington state and Oregon over the weekend left hundreds of thousands of people without electricity.
A strong system brought winds that registered gusts of about 60 mph at Sea-Tac Airport in Washington, the National Weather Service in Seattle said. Dozens of flights in the region were canceled or delayed.