M 4.8 earthquake: North Pacific Ocean (Japan) — June 30, 1977

M 4.8 earthquake: North Pacific Ocean (Japan) — June 30, 1977. Epicenter 809 km S of Hamamatsu, depth 465 km, 11:50 Local (1977-06-30 02:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (809 km S, Japan) — 27.692, 139.955

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