M 4.6 earthquake in Mexico (Guaymas) — May 11, 1977

M 4.6 earthquake in Mexico (Guaymas) — May 11, 1977. Epicenter 154 km W of Guaymas, depth 10 km, 03:01 Local (1977-05-11 10:01 UTC). Shaking felt by ~658K people. Readings from every reporting agency, affected towns, aftershock sequence.

154 km W of Guaymas (Mexico) — 27.587, -112.406

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