M 4.5 earthquake in Mexico (Chilpancingo) — September 22, 1982

M 4.5 earthquake in Mexico (Chilpancingo) — September 22, 1982. Epicenter 78 km SE of Chilpancingo, depth 33 km, 23:30 Local (1982-09-23 05:30 UTC). Shaking felt by ~1.4M people. Readings from every reporting agency, affected towns, aftershock sequence.

78 km SE of Chilpancingo (Mexico) — 17.042, -98.993

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