M 4.7 earthquake: North Pacific Ocean (Japan) — August 21, 1992

M 4.7 earthquake: North Pacific Ocean (Japan) — August 21, 1992. Epicenter 631 km S of Yokohama, depth 33 km, 07:47 Local (1992-08-20 22:47 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (631 km S, Japan) — 30.06, 141.775

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