Surf from Hurricane Marie, a Category 5 hurricane, hit Southern California like a bomb on the afternoon of Tuesday, August 26 and through Thursday August 28. While the focus of the swell was in Orange and LA Counties, beaches in Baja and San Diego County experienced large surf and coastal erosion as well.
The Eastern Pacific has seen a very intense and early Hurricane season this year. The reason is extremely warm water around Baja California and Mexico’s Pacific Coastline. You can see the elevated water temps in red in this excellent map below.
As the surf filled in on Wednesday the 27th coastal flooding occurred in Seal Beach and at Pt. Mugu State Beach in Los Angeles County. Homes were impacted in Seal Beach and a historic lifeguard station was destroyed at Pt. Mugu. There was also damage from high waves on Catalina Island.
From the LA Times:
The massive surf sent the historic Cove House training building crumbling to the shore at Point Mugu State Park. It washed away a 25-foot section of breakwater protecting the Anaheim Bay in Seal Beach. Pilings at the Malibu Pier were swept into the ocean, and cargo operations had to be temporarily halted at the Port of Long Beach on Wednesday.
On Catalina Island, the waves “essentially destroyed” White’s Landing Pier and another pier at Camp Fox, said Bob Reid, a spokesman for the Catalina Island Conservancy. The ocean was so clouded with debris and silt Thursday that one of the island’s famed glass-bottom boat tours became a sightseeing outing instead.
In Imperial Beach where I live the waves weren’t so large (the storm was focusing wave energy further north) but the strong surf and current resulted in significant coastal erosion. Here are images of the southern end of the beach where there was more erosion that at any time over the past two years.
Here is a photo of the surf in Imperial Beach by JC Monje that shows the strong swell and why the current and also sand is moving northward. Hurricane swells create a very long longshore current that takes sand from the southern part of the beach and transports it northward where it over time it can end up in Coronado.