M 4.6 earthquake: North Pacific Ocean (Japan) — November 20, 1997

M 4.6 earthquake: North Pacific Ocean (Japan) — November 20, 1997. Epicenter 740 km S of Yokohama, depth 33 km, 14:45 Local (1997-11-20 05:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (740 km S, Japan) — 29.238, 142.495

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