M 4.5 earthquake: North Pacific Ocean (Japan) — February 20, 1983

M 4.5 earthquake: North Pacific Ocean (Japan) — February 20, 1983. Epicenter 575 km E of Kushiro, depth 33 km, 09:27 Local (1983-02-19 23:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (575 km E, Japan) — 44.174, 151.324

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