M 4.6 earthquake: North Pacific Ocean (Japan) — June 1, 1978

M 4.6 earthquake: North Pacific Ocean (Japan) — June 1, 1978. Epicenter 289 km SE of Yokohama, depth 49 km, 07:29 Local (1978-05-31 22:29 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (289 km SE, Japan) — 33.104, 140.993

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