M 4.9 earthquake: Philippine Sea (Agana, Guam) — March 6, 1977

M 4.9 earthquake: Philippine Sea (Agana, Guam) — March 6, 1977. Epicenter 158 km SW of Agana, depth 46 km, 22:05 Local (1977-03-06 12:05 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (158 km SW of Agana, Guam) — 12.183, 144.139

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