M 4.6 earthquake: North Pacific Ocean (Japan) — March 18, 1986

M 4.6 earthquake: North Pacific Ocean (Japan) — March 18, 1986. Epicenter 803 km SE of Hamamatsu, depth 33 km, 10:46 Local (1986-03-18 01:46 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (803 km SE, Japan) — 28.023, 140.92

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