M 4.7 earthquake: North Atlantic Ocean (Liberia) — April 20, 1987

M 4.7 earthquake: North Atlantic Ocean (Liberia) — April 20, 1987. Epicenter 958 km SW of Robertsport, depth 10 km, 20:09 Local (1987-04-20 21:09 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (958 km SW, Liberia) — 0.036, -16.778

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