M 4.7 earthquake: North Pacific Ocean (Japan) — April 20, 1978

M 4.7 earthquake: North Pacific Ocean (Japan) — April 20, 1978. Epicenter 408 km NE of Kushiro, depth 33 km, 23:40 Local (1978-04-20 13:40 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (408 km NE, Japan) — 44.417, 149.036

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