RIVERSIDE COUNTY, CA - A preliminary 2.3 magnitude quake occurred close to Anza on Sunday morning, according to the U.S.
SANTA CLARA COUNTY, CA - A preliminary 2.5 magnitude quake occurred close to San Martin on Saturday afternoon, the U.S.
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San Andreas fault reaching critical stress levels, scientists say
The study shows that even larger and more destructive earthquakes could be looming in Southern California.
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