M 4.7 earthquake in Mexico (Tecoman) — January 21, 1978

M 4.7 earthquake in Mexico (Tecoman) — January 21, 1978. Epicenter 90 km SE of Tecoman, depth 89 km, 16:40 Local (1978-01-21 22:40 UTC). Shaking felt by ~258K people. Readings from every reporting agency, affected towns, aftershock sequence.

90 km SE of Tecoman (Mexico) — 18.449, -103.181

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