LOS ANGELES (CBSLA.com) — A second storm bore down on Southern California Wednesday, soaking roads and leading to a spike in freeway spinouts and causing mudslides in some areas.

According to the National Weather Service, a quarter of an inch an hour is expected from this latest storm.

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California Highway Patrol officials say not only are they responding to an increase in rain-related crashes, they are also having to clear the Malibu Canyon tunnel on Kanan Road after mud and boulders slid onto the roadway.

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Downtown Los Angeles has received more than seven inches of rain since October, two inches above normal.

A flash flood advisory was issued for recent burn areas along the foothills through Wednesday morning.

A third storm is forecast to move through Southern California Wednesday night and Thursday, but at lower elevations and temperatures.

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“Accumulating snows down to 4,000-foot elevations are possible, with mountain roadways such as the Tejon Pass and Highway 33 impacted,” an NWS statement said.