M 4.7 earthquake: North Pacific Ocean (Japan) — June 30, 1983

M 4.7 earthquake: North Pacific Ocean (Japan) — June 30, 1983. Epicenter 966 km S of Hamamatsu, depth 252 km, 14:45 Local (1983-06-30 05:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (966 km S, Japan) — 26.483, 140.949

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