San Diego

Morning Quake Part of Clusters Off Southern California Coast

N430AW VO SAN CLEMENTE _KNSD8L76
Southern California Seismic Network

An earthquake measuring a preliminary 3.5 magnitude was recorded at Thursday morning off the coast of California, part of a cluster of small undersea near San Clemente Island.

The epicenter was measured at about 7:25 a.m. at 62 miles southwest of Newport Beach, according to the U.S. Geological Survey.

Some responses on the "Did You Feel It?" section of the USGS site suggest people felt it in Laguna Beach and Mission Viejo. 

The cluster began with two magnitude 4.3 temblors a few hours apart early Wednesday.

According to the Southern California Seismic Network, records dating to 1932 show four previous quakes of magnitude 4 or greater in the area. The largest was magnitude 4.6 in 1952 and the most recent occurred in 2014.

The offshore cluster is one of two currently occurring in Southern California.

Hundreds of tiny quakes have been recorded since May 25 in the Glen Avon area about 45 miles east of Los Angeles.

Seismologist Lucy Jones says such swarms happen somewhere in California every year.

Contact Us