A 3.7-magnitude earthquake reported early Tuesday was the first in a series of quakes in the San Clemente area, according to the U.S. Geological Survey.
The first temblor hit at 4:24 a.m. about 18 miles southeast of San Clemente at a depth of about two miles, the USGS reported.
The second earthquake, a 3.5-magnitude, was reported at 4:53 a.m. about 18 miles southeast of the town at a depth of 2.2 miles, according to the USGS.
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Residents in Irvine, Laguna Niguel and Hemet reported feeling the first two jolts, according to USGS.
A second, 3.3-magnitude aftershock was reported at 5:53 a.m. at 19 miles southeast of San Clemente at a depth of 5.2 miles.