M 4.7 earthquake: North Pacific Ocean (Japan) — November 21, 1978

M 4.7 earthquake: North Pacific Ocean (Japan) — November 21, 1978. Epicenter 743 km S of Yokohama, depth 33 km, 09:54 Local (1978-11-21 00:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (743 km S, Japan) — 29.193, 142.437

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