M 5.1 earthquake: North Pacific Ocean (Japan) — January 7, 1991

M 5.1 earthquake: North Pacific Ocean (Japan) — January 7, 1991. Epicenter 304 km SE of Yokohama, depth 21 km, 02:15 Local (1991-01-06 17:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (304 km SE, Japan) — 32.91, 140.876

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