M 4.5 earthquake: North Pacific Ocean (USA) — November 17, 1977

M 4.5 earthquake: North Pacific Ocean (USA) — November 17, 1977. Epicenter 451 km W of Atka, depth 64 km, 06:44 Local (1977-11-16 18:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (451 km W, USA) — 50.974, 179.579

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