Shakemap of the earthquake. An earthquake occurred on Wednesday evening in Southern California with a magnitude of 5.4. According to the United States Geological Survey, the earthquake occurred at 16:53 local time (23:53 UTC). At least two dozen smaller aftershocks, none greater than a magnitude of 3.6, have struck the same area since the quake. The earthquake occurred at a depth of 14 kilometers (8.7 miles), and the epicenter was located 20 kilometers Northwest of Borrego Springs ; 23 kilometers Southeast of Anza ; 33 kilometers Northeast of Lake Henshaw ; and 94 kilometers to the northeast of San Diego . According to Kate Hutton of the California Institute of Technology , this earthquake was caused by an earlier quake in April with a magnitude of 7.2. Hutton says that "changes in the fault line" from April's quake, caused today's quake to occur. The April quake was centered in the southern Imperial Valley south of Mexicali, Mexico near the Colorado River. Related news 
Shakemap of the earthquake. An earthquake occurred on Wednesday evening in Southern California with a of 5.4. According to the United States Geological Survey, the earthquake occurred at 16:53 local time (23:53 UTC). At least two dozen smaller aftershocks, none greater than a magnitude of 3.6, have struck the same area since the quake. The earthquake occurred at a depth of 14 kilometers (8.7 miles), and the epicenter was located 20 kilometers Northwest of ; 23 kilometers Southeast of ; 33 kilometers Northeast of ; and 94 kilometers to the northeast of . According to Kate Hutton of the , this earthquake was caused by an earlier quake in April with a magnitude of 7.2. Hutton says that "changes in the fault line" from April's quake, caused today's quake to occur. The April quake was centered in the southern Imperial Valley south of Mexicali, Mexico near the Colorado River. Related news Sister links
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magnitude
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Borrego Springs
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Anza
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Lake Henshaw
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San Diego
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California Institute of Technology
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Sister links