LOS ANGELES (KTLA) -- All beaches remained closed in Long Beach Tuesday, after a fierce weekend storm caused sewage to spill into the Los Angeles River nearly 40 miles upstream in Studio City.
The L.A. County Bureau of Sanitation estimates that about 250,000 gallons of raw sewage seeped into the L.A. River when the storm overwhelmed the sewage system on Sunday.
The beaches will stay closed until water tests show that contamination levels are within a safe range. People are being warned to stay out of the water.
The storm caused plenty of other problems across the Southland before subsiding Monday afternoon.
Residents from 12 homes in Woodland Hills were evacuated when debris and mud flows threatened to bring down a retaining wall at 4855 N. Regalo Road, the Los Angeles Fire Department said.
The rain also triggered a roof collapse at a Big Lots store in Mission Hills. The store was closed at the time because of earlier leaks and flooding, and no one was hurt.
Heavy rain caused the roof of Jason Engineering in Garden Grove to collapse as well. The business is located at Markone, near Orangewood Avenue.
The roof collapse broke a sprinkler line inside the building, and four inches of water flooded onto the floor. No one was hurt.
The storm also left many homes throughout the Southland without power.
More than 90,000 homes and businesses lost power at some point Sunday.
An estimated 15,000 Department of Water and Power customers still had no electricity Monday morning, but by Monday night, most of the power had been restored.
The DWP said the hardest hit areas were Valley Glen, Cheviot Hills and Van Nuys.
13,990 Southern California Edison customers were still without power Tuesday, mostly in Frazier Park, Kern County and Lake Arrowhead. Some outages were also reported in Valencia and Thousand Oaks.
The Arctic storm broke several rainfall records, forecasters said Monday. In downtown L.A., 2.54 inches fell, about an inch more than the previous record set in 1943.
Camarillo Airport and Santa Barbara Airport also received record rainfall, with 4.91 inches and 5.23 inches, respectively.
Van Nuys and Newhall each received more than 6 inches of rain from the storm. Canoga Park recorded 4.7 inches, Beverly Hills saw 4.1 inches, and 3.2 inches of rain fell at UCLA.
According to the National Weather Service, significant flooding was reported in the Topanga Canyon area of the Santa Monica Mountains.
A creek overflowed its banks, trapping several cars in the water and mud. The canyon as closed for a time, but then reopened.
Pacific Coast Highway was also closed at Topanga Canyon Boulevard due to rock slides, but all lanes have since been reopened.
The eastbound lanes of Big Tujunga Canyon Road at Mount Gleason Avenue remain closed to everyone but residents.
The Grapevine was closed Sunday evening due to snow and rain, but was reopened Monday morning with CHP escorts.
For an updated list of road closures, visit the Department of Public Work's website: http://gis.dpw.lacounty.gov/roadclosures/main.cfm.
Strong winds forced Southwest Airlines to cancel 16 flights at Burbank's Bob Hope Airport on Sunday, and divert at least eight others. Other airlines experienced long delays.
Runners brave enough to take on the 26th annual L.A. Marathon endured winds as strong as 40mph around Dodger Stadium, and faced intense showers through to the finish line.
Los Angeles County mountains saw wind gusts up to 81 mph Sunday morning, while Malibu Canyon registered speeds of 51 mph, and Burbank saw winds as high as 38 mph.
More showers are forecast for Wednesday, Thursday and possibly Friday, though the rainfall is expected to be considerably lighter than Sunday's storm, forecasters said.
Local Beaches Closed after Storm-Related Sewage Spill
A section of coastline in Long Beach was shut down after a sewage release into the Los Angeles River.
Watch Lynette Romero's report
Beaches in Long Beach closed after storm-related sewage release. (KTLA-TV)
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