More than a dozen aftershocks followed a 3.9-magnitude earthquake that struck the Inland ... had an epicenter about three miles southwest of Ontario, according to the U.S. Geological Survey.
It was a magnitude 3.5. That was later followed by a 3.9 earthquake at 10:34 a.m., with its center about 4.4 miles southeast of Ontario and 4.7 miles northwest of Jurupa Valley in Riverside County ...
A 3.5-magnitude earthquake hit near Ontario, California, on Saturday morning, with a second quake of 3.9 magnitude occurring about half an hour later in the same area. The tremors were felt as far ...
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