M 4.5 earthquake: North Pacific Ocean (USA) — July 28, 1983

M 4.5 earthquake: North Pacific Ocean (USA) — July 28, 1983. Epicenter 436 km W of Coos Bay, depth 10 km, 06:50 Local (1983-07-28 15:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (436 km W, USA) — 44.617, -129.389

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