M 4.5 earthquake: North Pacific Ocean (Japan) — October 23, 1988

M 4.5 earthquake: North Pacific Ocean (Japan) — October 23, 1988. Epicenter 271 km E of Hachinohe, depth 33 km, 19:50 Local (1988-10-23 10:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (271 km E, Japan) — 40.304, 144.735

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