Here is the latest on the storm hitting California gathered by AP reporters across the state:
Widely scattered power outages left about 50,000 customers of Southern California Edison and the Los Angeles Department of Water and Power without electricity, spokesmen for the utilities said.
Scattered power outages left 13,500 customers of the Los Angeles Department of Water and Power without electricity, spokesman Albert Rodriguez said.
The National Weather Service issued flash flood warnings for a string of wildfire-scarred areas in the foothills of the San Gabriel Mountains northeast of Los Angeles.
The warnings applied to the Colby, Williams, Madison and Tecolote burn areas near the cities of Glendora, Azusa and Monrovia and areas within San Gabriel Canyon and near Camp Williams in the mountain range.
The weather service said rainfall was moderate to occasionally heavy, reaching rates of a half-inch per hour.
The National Weather Service issued a flash flood warning for northeastern Los Angeles County including the high-desert city of Palmdale and the community of Lake Los Angeles.
The National Weather Service reports showers are expected in the Bay Area later Friday, with a slight chance of thunderstorms. Pacific Gas & Electric reports about 3,500 customers are without power north of San Francisco.
Amtrak suspended service from Los Angeles north to the central coast city of San Luis Obispo but continued to operate service between LA and San Diego.
Glendora police Lt. Matt Williams says five people are using an evacuation center after debris flows sent rocks the size of golf ball and bricks down the street. He says it's unclear how many people have left their homes, but no injuries or damage to homes have been reported in the area charred by the Colby Fire in January in the foothills of the San Gabriel Mountains.
Red Cross spokesman Tom Horan says 40 people displaced by the mudflow in Camarillo Springs, about 50 miles northwest of Los Angeles in Ventura County, have come to an evacuation center. Two were taken to the hospital, but Horan said their injuries weren't serious.
Capt. Don Aguilar of the Ventura County Sheriff's Office says mandatory evacuations have been ordered in a wildfire-scarred area of Ventura County due to a mudflow. Some damage has been reported, but officials are still assessing its scope. No injuries have been reported.
The National Weather Service says wind-driven rain in Southern California fell at the rate of 1 to 2 inches an hour, triggering flash flooding. The main front followed with rain falling at rates of a tenth to about a third of an inch per hour.