M 4.8 earthquake: North Pacific Ocean (Japan) — August 22, 1983

M 4.8 earthquake: North Pacific Ocean (Japan) — August 22, 1983. Epicenter 435 km SE of Yokohama, depth 35 km, 13:58 Local (1983-08-22 04:58 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (435 km SE, Japan) — 31.874, 141.569

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