M 4.8 earthquake: Philippine Sea (Agana, Guam) — October 18, 1999

M 4.8 earthquake: Philippine Sea (Agana, Guam) — October 18, 1999. Epicenter 250 km SW of Agana, depth 33 km, 14:48 Local (1999-10-18 04:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (250 km SW of Agana, Guam) — 12.472, 142.679

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