M 4.6 earthquake: North Pacific Ocean (Japan) — September 7, 1991

M 4.6 earthquake: North Pacific Ocean (Japan) — September 7, 1991. Epicenter 631 km SE of Shizuoka, depth 33 km, 05:41 Local (1991-09-06 20:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (631 km SE, Japan) — 29.912, 141.409

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