M 4.9 earthquake: North Pacific Ocean (Japan) — January 28, 1977

M 4.9 earthquake: North Pacific Ocean (Japan) — January 28, 1977. Epicenter 551 km S of Hamamatsu, depth 409 km, 13:25 Local (1977-01-28 04:25 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (551 km S, Japan) — 29.849, 138.795

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