M 4.5 earthquake: South Pacific Ocean (Tonga) — July 17, 1976

M 4.5 earthquake: South Pacific Ocean (Tonga) — July 17, 1976. Epicenter 334 km W of Nuku'alofa, depth 450 km, 15:50 Local (1976-07-18 03:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (334 km W, Tonga) — -20.785, -178.412

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