A 3.3-magnitude earthquake struck near Borrego Springs at 9:01 a.m. on Wednesday, the second quake recorded in the San Diego region without hours.
Earlier on Wednesday, a 3.6-magnitude temblor struck in the Pacific Ocean south of Navy-administered San Clemente Island.
The U.S. Geological Survey said the Borrego quake was centered 4.6 miles north of Borrego Springs at a depth of 2 miles.
It was reportedly felt in several areas of North County.
The San Clemente quake struck 15 miles deep at 3:28 a.m., and was felt by some residents of coastal San Diego. The epicenter of earthquake was 68 miles west of La Jolla.
No injuries or damage were reported from either quake.
City News Service contributed to this article.