The quake, with a preliminary magnitude of 4.9, happened at 10:42 p.m. Wednesday (0342 GMT) and was centered 80 kilometers (50 miles) west of Manzanillo, a city on the coast of the state of Colima, the U.S. Geological Survey reported.
Mexican officials measured the preliminary magnitude at 5.2. It was felt as far north as the Pacific resort city of Puerto Vallarta, about 270 kilometers (170 miles) north of Manzanillo.
"It was felt strongly, but fortunately there is no damage, just a bit of alarm in the community," said Nicolas Mendoza, an official with the civil protection department for the state of Jalisco, where Puerto Vallarta is located.
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