Even the three quakes in Riverside County were too far apart to all be linked, the Los Angeles Times reported. The first two, a magnitude-3.7 and -2.7 that struck shortly after midnight, both were traced back to the San Jacinto fault zone. But the third temblor, a magnitude-3.1 near Corona at 9:11 a.m., occurred in a different fault zone.
Scientists are still studying the details of the third earthquake, which occurred near the Elsinore and Whittier faults, Caltech seismologist Jennifer Andrews told The Times. As for the first two, it seemed like business as usual for the San Jacinto fault zone, a major network of faults in Southern California.
Hundreds of miles north, in California’s East Bay area, three small earthquakes shook the Concord area Wednesday morning.
—City News Service
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