M 5.1 earthquake: North Pacific Ocean (Japan) — January 21, 1987

M 5.1 earthquake: North Pacific Ocean (Japan) — January 21, 1987. Epicenter 1034 km SE of Yokohama, depth 33 km, 11:09 Local (1987-01-21 01:09 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (1034 km SE, Japan) — 26.876, 143.872

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