M 4.5 earthquake: South Pacific Ocean (Tonga) — September 22, 1974

M 4.5 earthquake: South Pacific Ocean (Tonga) — September 22, 1974. Epicenter 305 km S of Nuku'alofa, depth 33 km, 10:44 Local (1974-09-22 22:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (305 km S, Tonga) — -23.879, -175.179

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