M 4.8 earthquake: North Pacific Ocean (Japan) — June 28, 1978

M 4.8 earthquake: North Pacific Ocean (Japan) — June 28, 1978. Epicenter 394 km S of Hamamatsu, depth 308 km, 19:47 Local (1978-06-28 10:47 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (394 km S, Japan) — 31.249, 138.593

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