M 4.6 earthquake: Philippine Sea (Agana, Guam) — October 21, 2011

M 4.6 earthquake: Philippine Sea (Agana, Guam) — October 21, 2011. Epicenter 227 km SW of Agana, depth 37 km, 16:18 Local (2011-10-21 06:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (227 km SW of Agana, Guam) — 11.983, 143.32

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