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.

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

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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.