M 4.6 earthquake: North Pacific Ocean (Japan) — October 20, 1999

M 4.6 earthquake: North Pacific Ocean (Japan) — October 20, 1999. Epicenter 471 km S of Wakayama, depth 506 km, 14:32 Local (1999-10-20 05:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (471 km S, Japan) — 30.242, 136.891

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