M 4.6 earthquake: North Pacific Ocean (Japan) — May 11, 1988

M 4.6 earthquake: North Pacific Ocean (Japan) — May 11, 1988. Epicenter 455 km S of Hamamatsu, depth 401 km, 03:48 Local (1988-05-10 18:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (455 km S, Japan) — 30.668, 138.429

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