M 4.6 earthquake: North Pacific Ocean (USA) — January 20, 1981

M 4.6 earthquake: North Pacific Ocean (USA) — January 20, 1981. Epicenter 408 km W of Coos Bay, depth 15 km, 01:32 Local (1981-01-20 10:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (408 km W, USA) — 44.112, -129.192

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