M 4.5 earthquake: North Pacific Ocean (Japan) — April 8, 1978

M 4.5 earthquake: North Pacific Ocean (Japan) — April 8, 1978. Epicenter 552 km S of Yokohama, depth 33 km, 20:14 Local (1978-04-08 11:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (552 km S, Japan) — 30.818, 141.794

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