M 4.7 earthquake: North Pacific Ocean (Japan) — November 20, 1991

M 4.7 earthquake: North Pacific Ocean (Japan) — November 20, 1991. Epicenter 598 km SE of Yokohama, depth 33 km, 11:50 Local (1991-11-20 01:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (598 km SE, Japan) — 30.674, 142.595

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