M 5.0 earthquake: North Pacific Ocean (USA) — April 21, 1977

M 5.0 earthquake: North Pacific Ocean (USA) — April 21, 1977. Epicenter 425 km W of Coos Bay, depth 15 km, 21:22 Local (1977-04-22 06:22 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (425 km W, USA) — 44.23, -129.379

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