WASHINGTON, Oct 21 (Reuters) - A powerful magnitude 6.9 quake struck off Mexico's Baja California on Thursday, the U.S. Geological Survey reported.
The quake, initially reported as a magnitude 6.6, was centered in the Gulf of California, 65 miles (105 km) south of Los Mochis in the state of Sinaloa on the mainland. It was very shallow, just 6.2 miles (10 km) below the seabed.
The Pacific Tsunami center said the quake had not triggered a tsunami but could cause local waves. (Reporting by Sandra Maler, Editing by Eric Beech)
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