Earthquake Jolts San Diego County

3.9-Magnitued Earthquake Causes No Injuries, Damage

A 3.9-magnitude earthquake centered near Jamul rattled San Diego County today, followed by a small aftershock.

The quake, its epicenter about 9.4 miles east southeast of El Cajon and 3 miles east of Jamul, struck at 4:06 a.m., Caltech seismologist Kate Hutton reported.

The U.S. Geological Survey gave a preliminary magnitude of 4.0 to the initial quake, but downgraded it to 3.9 three hours later.

A 2.4-magnitude temblor centered in the same area was reported four minutes later, according to the USGS.

The quake could be felt as far north as Temecula in Riverside County, seismologists said.

According to Dr. Pat Abbott, San Diego State University geologist, the earthquake occurred at a subsidiary fault line and future aftershocks will probably not be felt by residents.

One man called 10News complaining that a bomb went off under his trailer. He was surprised to hear it was a quake.

A 4.0-magnitude quake is capable of causing moderate damage, but no injuries or damages were immediately reported, according to El Cajon police officials and a Heartland fire dispatcher.

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