M 5.3 earthquake: South Pacific Ocean (Tonga) — September 17, 1980

M 5.3 earthquake: South Pacific Ocean (Tonga) — September 17, 1980. Epicenter 374 km W of Nuku'alofa, depth 599 km, 11:33 Local (1980-09-16 23:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (374 km W, Tonga) — -20.615, -178.781

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