M 4.7 earthquake: South Pacific Ocean (Tonga) — March 22, 1977

M 4.7 earthquake: South Pacific Ocean (Tonga) — March 22, 1977. Epicenter 308 km W of Nuku'alofa, depth 567 km, 11:47 Local (1977-03-22 23:47 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (308 km W, Tonga) — -20.224, -178.011

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