M 4.6 earthquake: North Atlantic Ocean (Panama) — October 4, 1977

M 4.6 earthquake: North Atlantic Ocean (Panama) — October 4, 1977. Epicenter 591 km SW of Puerto Armuelles, depth 33 km, 20:21 Local (1977-10-05 02:21 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (591 km SW, Panama) — 3.874, -85.86

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