M 4.6 earthquake: North Pacific Ocean (Japan) — December 3, 1991

M 4.6 earthquake: North Pacific Ocean (Japan) — December 3, 1991. Epicenter 481 km S of Hamamatsu, depth 415 km, 09:27 Local (1991-12-03 00:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (481 km S, Japan) — 30.461, 138.648

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