M 4.6 earthquake: North Pacific Ocean (Japan) — February 3, 1978

M 4.6 earthquake: North Pacific Ocean (Japan) — February 3, 1978. Epicenter 555 km SE of Yokohama, depth 33 km, 13:53 Local (1978-02-03 04:53 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (555 km SE, Japan) — 31.028, 142.421

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