M 5.6 earthquake: Philippine Sea (Naha, Japan) — April 18, 1981

M 5.6 earthquake: Philippine Sea (Naha, Japan) — April 18, 1981. Epicenter 194 km W of Naha, depth 92 km, 11:05 Local (1981-04-18 02:05 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (194 km W of Naha, Japan) — 25.75, 125.798

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