M 4.6 earthquake: Philippine Sea (Naha, Japan) — March 21, 1987

M 4.6 earthquake: Philippine Sea (Naha, Japan) — March 21, 1987. Epicenter 248 km SW of Naha, depth 91 km, 22:15 Local (1987-03-21 13:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (248 km SW of Naha, Japan) — 25.314, 125.4

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