Southern California health officials are advising swimmers and surfers to stay out of the ocean because of runoff from the weekend's winter-like storm.
The rain advisory issued for beaches Monday comes after the late-season low-pressure system brought downpours, hail and snow to the region.
Bacteria levels can increase significantly during and after rainstorms as contaminants in the runoff enter the ocean via storm drains, creeks and rivers.
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San Diego County was hardest hit by the unusually wet, chilly weather. More than two inches of rain fell in some areas and nearly 10 inches of snow was dumped on peaks in the Cleveland National Forest.
San Diego's Petco Park had its first baseball rainout since 2015.
In Los Angeles County a rainfall record of .39 inches was set Sunday at Long Beach Airport.