An earthquake with a preliminary magnitude of 6.7 occurred off the coast of Mexico, Thurs., May 1, 1997, according to the U.S. Geological Survey.
The earthquake occurred at 7:38 a.m. EDT (6:38 a.m. local Mexico time), in the waters of the Pacific Ocean, about 530 miles west of Mexico City or 175 miles southwest Puerto Vallarta, Mexico.
This is the largest earthquake that has occurred in the area since a magnitude 6.6 earthquake that occurred on Dec. 6, 1965. It is also the fourth large earthquake that has occurred worldwide in the past week.
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