A second earthquake shook Southern California on Wednesday morning, according to the U.S. Geological Survey.
The 4.5 magnitude quake shook shortly after 9:30 a.m. near Yorba Linda, Calif. It was felt as far as Orange County and Carlsbad.
This came only 10 hours after a 4.4 earthquake in the same area. Many San Diego residents said they felt it throughout the county.
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