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

M 4.6 earthquake: North Pacific Ocean (Japan) — March 21, 1986. Epicenter 814 km S of Yokohama, depth 33 km, 15:02 Local (1986-03-21 05:02 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (814 km S, Japan) — 28.565, 142.599

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