Slow-Moving Cold Storm Brings Steady Rain, Wind to LA County

Part of a canyon road in Malibu was closed Friday due to a mudslide as a cold storm moved down the coast of California, producing steady rainfall along the coast and in burn areas. 

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Topanga Canyon Boulevard was closed between Pacific Coast Highway and the community of Topanga at midday due to a mud and rock slide, according to the California Highway Patrol. Details about when the road will reopen were not immediately available, but by the evening, it had not yet reopened. 

Initial reports indicated a section of PCH was closed, but the CHP later said the closure was on Topanga Canyon Boulevard.

Authorities warned residents in Los Angeles County burn areas to be prepared for mud and debris flows, which can developed during heavy downpours. The storm will continue to push south throughout the day.

A flash flood watch in effect in the San Gabriel Mountains and San Fernando Valley, where moderate rain was reported overnight, expired by 6:30 p.m. 

"It's a slow moving front, so it may take some time before the rain gets to your neighborhood," said NBC4 forecaster Shanna Mendiola.

The system was moving out of Santa Barbara County around 7 a.m. It was expected to move through Ventura County by 9 a.m. and LA County by midday.

In the Antelope Valley, where southwest winds were blowing at between 20 and 35 mph and gusting to 40 mph, a wind advisory will be in effect until 9 p.m.

Mountain areas can expect snow and strong wind gusts. 

The storm has been moving slowly down the West Coast this week, bringing snow to the Sierra Nevada Mountains, drenching rain to the Bay Area and flooding to Santa Barbara County, where a flash flood warning was in effect Friday morning. 

Temperatures will remain cool into the weekend. Friday's Highs: 46 degrees on Mount Wilson; 54 in Lancaster; 55 in Palmdale; 57 in San Gabriel; 58 in Burbank; 59 in Pasadena; 60 in Downtown L.A., Long Beach, Avalon, Woodland Hills, and at LAX.

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