U.S. Geological Survey
The U.S. Geological Survey said the quake had a preliminary magnitude of 7 and was centered about 10 miles northeast of Acapulco.
The 7.2 quake has left at least 724 people dead and 2,800 injured as rescuers try to find more survivors ahead of Tropical Storm Grace's arrival.
James Reilly, 63, has been tapped for director of the U.S. Geological Survey.
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You're more likely to experience a damaging earthquake this year if you live in Oklahoma than if you live in California.
The sudden collapse of a volcano likely triggered the monstrous tsunami more than 70,000 years ago.
Mother Nature has a great sense of humor.