M 4.7 earthquake: Philippine Sea (Naha, Japan) — December 28, 1990

M 4.7 earthquake: Philippine Sea (Naha, Japan) — December 28, 1990. Epicenter 353 km SW of Naha, depth 33 km, 22:20 Local (1990-12-28 14:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (353 km SW of Naha, Japan) — 23.822, 125.359

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