Earthquake measuring 3.9 magnitude strikes southeast of Borrego Springs

BORREGO SPRINGS (Wire Service) - A moderate earthquake apparently rattled East County today, according to preliminary reports from automated seismographs.

The quake, with an estimated magnitude 3.9, struck near Laguna Mountain at 1:37 p.m.

The epicenter was initially described as 19 miles south-southeast of Borrego Springs, or 54 miles east-northeast of San Diego.

The quake's size and epicenter was not immediately reviewed by scientists, and those details are sometimes revised, seismologists have said.