Los Angeles, Dec. 7 -- The second storm in a week brought record-breaking rainfall to parched Los Angeles on Thursday, jamming traffic on Southern California highways and prompting evacuations in wildfire-scarred areas.

A mudslide shut down Pacific Coast Highway and surrounding roads in and around Malibu neighborhoods charred by last month's massive fire that destroyed hundreds of homes.

Kirby Kotler and his neighbors spent days before the storm stacking 18,000 sandbags behind their homes along the highway. But when heavy rains arrived, mud, water and rocks blasted through the bags and across their properties.

Kotler, who wielded water hoses to beat back the flames in November, used a tractor to keep the debris from entering his home....