M 5.1 earthquake: North Pacific Ocean (Japan) — October 1, 1983

M 5.1 earthquake: North Pacific Ocean (Japan) — October 1, 1983. Epicenter 568 km S of Yokohama, depth 33 km, 07:18 Local (1983-09-30 22:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (568 km S, Japan) — 30.591, 141.543

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