M 5.2 earthquake: North Pacific Ocean (Japan) — April 30, 1987

M 5.2 earthquake: North Pacific Ocean (Japan) — April 30, 1987. Epicenter 311 km NE of Naha, depth 34 km, 10:10 Local (1987-04-30 01:10 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (311 km NE, Japan) — 28.575, 129.344

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