Update: Acapulco Quake Downgraded to 7.4: Have Any Relatives in Area?

Updated at 1:03 p.m. March 20, 2012

Scientists say a major earthquake struck southwestern Mexico, with a magnitude of 7.4. The U.S. Geological Survey said the epicenter was 310 miles  east of Ometepec in Guerrero state at a depth of 10.9 miles. It was first reported at 7.9 and then 7.6

That’s 200 miles SSE of Mexico City.

The Pacific Tsunami Warning Center said local tsunami effects were possible — but “based on all available data a destructive Pacific-wide tsunami is not expected and there is no tsunami threat to Hawaii.”

Science reporter Gary Robbins of U-T San Diego reported: “The quake, which hit at 12:02 p.m. Mexican time, was recorded on a seismometer in Borrego Springs, which is located about 1,700 miles west of the epicenter of the quake. The energy arrived within minutes of the fault breaking.”

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