M 4.6 earthquake: North Pacific Ocean (Japan) — December 22, 1983

M 4.6 earthquake: North Pacific Ocean (Japan) — December 22, 1983. Epicenter 525 km S of Yokohama, depth 33 km, 14:11 Local (1983-12-22 05:11 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (525 km S, Japan) — 31.042, 141.673

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