M 4.7 earthquake: North Pacific Ocean (Japan) — April 13, 1990

M 4.7 earthquake: North Pacific Ocean (Japan) — April 13, 1990. Epicenter 871 km S of Hamamatsu, depth 420 km, 06:53 Local (1990-04-12 21:53 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (871 km S, Japan) — 27.16, 140.12

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