Tuesday, August 04, 2009 MEXICO CITY: A 6.9-magnitude earthquake struck Monday off the coast of Mexico near Santa Isabel in Baja California, experts from the US Geological Survey said.USGS said the quake struck at 11:00 am (1800 GMT) and was preceded about five minutes earlier by one registering a 5.8 magnitude. There appeared to be no imminent threat of tidal waves from the quakes, USGS said, although individual governments were advised to make their own decisions on whether to issue a tsunami warning. "Earthquakes of this size sometimes generate local tsunamis that can be destructive along coasts located within a few hundred kilometers of the earthquake epicenter," it added."Authorities in the region of the epicenter should be aware of this possibility and take appropriate action."
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