Here's something you might be interested in.
As the beach season winds down, San Diego County's coastline is padded by what is likely the deepest and widest accumulations of sand we'll see this year. Many stretches of the coastline are vulnerable to powerful waves associated with winter storms. This wave action can pull sand off the beaches and deposit it offshore, leaving behind (especially in North County) nothing but cobble beds. During the spring and summer gentle wave action usually returns much of the sand, usually in time for the arrival of the summer tourists.
As the beach season winds down, San Diego County's coastline is padded by what is likely the deepest and widest accumulations of sand we'll see this year. Many stretches of the coastline are vulnerable to powerful waves associated with winter storms. This wave action can pull sand off the beaches and deposit it offshore, leaving behind (especially in North County) nothing but cobble beds. During the spring and summer gentle wave action usually returns much of the sand, usually in time for the arrival of the summer tourists.