M 4.7 earthquake in Mexico (Manzanillo) — October 20, 1976

M 4.7 earthquake in Mexico (Manzanillo) — October 20, 1976. Epicenter 42 km N of Manzanillo, depth 33 km, 22:59 Local (1976-10-21 04:59 UTC). Shaking felt by ~1.5M people. Readings from every reporting agency, affected towns, aftershock sequence.

42 km N of Manzanillo (Mexico) — 19.422, -104.362

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