M 5.1 earthquake: South Pacific Ocean (Tonga) — August 21, 1974

M 5.1 earthquake: South Pacific Ocean (Tonga) — August 21, 1974. Epicenter 341 km W of Nuku'alofa, depth 583 km, 23:49 Local (1974-08-22 11:49 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (341 km W, Tonga) — -20.716, -178.47

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