M 4.6 earthquake: North Pacific Ocean (Japan) — September 6, 1987

M 4.6 earthquake: North Pacific Ocean (Japan) — September 6, 1987. Epicenter 252 km SE of Yokohama, depth 85 km, 07:30 Local (1987-09-05 22:30 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (252 km SE, Japan) — 33.34, 140.671

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