Countywide
A mild earthquake shook a wide stretch of San Diego County on Friday morning, but no damage or injuries were reported from what scientists said was an aftershock of a 1986 quake.
The temblor, which registered 3.4 on the Richter scale, struck at 7:11 a.m. and was centered beneath the ocean floor 27 miles southwest of Oceanside, said Amy Branch, a seismologist at the California Institute of Technology in Pasadena.
A San Diego County Sheriff’s Department spokesman said no reports of damage or injury had been received. The quake was first reported to Metro Weather in San Diego by two El Cajon residents, forecaster Tim Root said.
Branch said scientists believe the temblor was an aftershock of a 5.3-magnitude quake that struck July 13, 1986.
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