M 4.6 earthquake: North Pacific Ocean (Japan) — September 13, 1991

M 4.6 earthquake: North Pacific Ocean (Japan) — September 13, 1991. Epicenter 470 km NE of Kushiro, depth 33 km, 18:15 Local (1991-09-13 08:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (470 km NE, Japan) — 44.807, 149.667

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