M 5.7 earthquake: North Pacific Ocean (Japan) — August 31, 1974

M 5.7 earthquake: North Pacific Ocean (Japan) — August 31, 1974. Epicenter 584 km SE of Yokohama, depth 24 km, 08:29 Local (1974-08-30 23:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (584 km SE, Japan) — 30.562, 141.94

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