M 4.6 earthquake: North Pacific Ocean (Japan) — January 21, 1986

M 4.6 earthquake: North Pacific Ocean (Japan) — January 21, 1986. Epicenter 773 km S of Hamamatsu, depth 33 km, 18:29 Local (1986-01-21 09:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (773 km S, Japan) — 28.23, 140.657

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