M 4.9 earthquake: Philippine Sea (Hamamatsu, Japan) — August 20, 1997

M 4.9 earthquake: Philippine Sea (Hamamatsu, Japan) — August 20, 1997. Epicenter 1105 km S of Hamamatsu, depth 100 km, 12:16 Local (1997-08-20 03:16 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (1105 km S of Hamamatsu, Japan) — 25.101, 140.637

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