Earthquakes Hit SoCal in "Known Active Area"

Southern California, USA

Swarm of earthquakes is first in years, seismologists say

The cluster of earthquakes that struck near Yorba Linda in the last 24 hours was centered near the Whittier fault, a major fault, but preliminary data suggested it was not responsible, said Doug Given, a geophysicist with the U.S. Geological Survey.

“There are lots and lots of little faults all over that area,” Given said of the northern Orange County region where the quakes were centered. “It’s a known active area.”

The shaking began with a magnitude 4.5 earthquake near Yorba Linda about 11:30 p.m. Tuesday, bookended by another 4.5 quake about 9:30 a.m. Wednesday, but with many smaller ones in between.

Ocean Front Walk in Los Angeles, CA