M 5.4 earthquake: North Pacific Ocean (Japan) — April 16, 1980

M 5.4 earthquake: North Pacific Ocean (Japan) — April 16, 1980. Epicenter 782 km S of Hamamatsu, depth 242 km, 15:50 Local (1980-04-16 06:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (782 km S, Japan) — 27.988, 140.136

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