M 5.5 earthquake: Philippine Sea (Agana, Guam) — September 21, 2003

M 5.5 earthquake: Philippine Sea (Agana, Guam) — September 21, 2003. Epicenter 251 km SW of Agana, depth 10 km, 17:42 Local (2003-09-21 07:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (251 km SW of Agana, Guam) — 11.768, 143.224

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