M 6.5 earthquake: North Pacific Ocean (Japan) — February 4, 1986

M 6.5 earthquake: North Pacific Ocean (Japan) — February 4, 1986. Epicenter 789 km S of Hamamatsu, depth 508 km, 05:47 Local (1986-02-03 20:47 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (789 km S, Japan) — 27.791, 139.552

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