M 4.9 earthquake: North Pacific Ocean (Japan) — April 5, 1980

M 4.9 earthquake: North Pacific Ocean (Japan) — April 5, 1980. Epicenter 488 km S of Hamamatsu, depth 445 km, 00:49 Local (1980-04-04 15:49 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (488 km S, Japan) — 30.374, 138.457

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