M 4.6 earthquake: Philippine Sea (Hamamatsu, Japan) — May 10, 1981

M 4.6 earthquake: Philippine Sea (Hamamatsu, Japan) — May 10, 1981. Epicenter 1120 km SE of Hamamatsu, depth 33 km, 21:35 Local (1981-05-10 11:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (1120 km SE of Hamamatsu, Japan) — 25.632, 142.761

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