M 4.7 earthquake off the coast of San Quintín, Mexico — January 21, 1981

M 4.7 earthquake off the coast of San Quintín, Mexico — January 21, 1981. Epicenter 116 km S of San Quintín, depth 15 km, 10:10 Local (1981-01-21 18:10 UTC). Shaking felt by ~189K people. Readings from every reporting agency, affected towns, aftershock sequence.

Off the coast of San Quintín (116 km S, Mexico) — 29.449, -116.118

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