M 4.6 earthquake: North Pacific Ocean (Japan) — March 30, 1973

M 4.6 earthquake: North Pacific Ocean (Japan) — March 30, 1973. Epicenter 489 km SE of Yokohama, depth 14 km, 15:54 Local (1973-03-30 06:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (489 km SE, Japan) — 31.445, 141.842

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