M 7.3 earthquake: Philippine Sea (Naha, Japan) — July 4, 1917

M 7.3 earthquake: Philippine Sea (Naha, Japan) — July 4, 1917. Epicenter 171 km SW of Naha, depth 35 km, 09:38 Local (1917-07-04 00:38 UTC). Shaking felt by ~58M people. Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (171 km SW of Naha, Japan) — 25.157, 126.432

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