M 5.4 earthquake: South Pacific Ocean (Tonga) — March 15, 1977

M 5.4 earthquake: South Pacific Ocean (Tonga) — March 15, 1977. Epicenter 344 km W of Nuku'alofa, depth 577 km, 07:03 Local (1977-03-14 19:03 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (344 km W, Tonga) — -20.73, -178.506

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