M 5.4 earthquake: Philippine Sea (Agana, Guam) — April 15, 1991

M 5.4 earthquake: Philippine Sea (Agana, Guam) — April 15, 1991. Epicenter 247 km SW of Agana, depth 39 km, 21:31 Local (1991-04-15 11:31 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (247 km SW of Agana, Guam) — 12.451, 142.724

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