M 4.7 earthquake: South Pacific Ocean (Tonga) — August 16, 1974

M 4.7 earthquake: South Pacific Ocean (Tonga) — August 16, 1974. Epicenter 309 km NW of Nuku'alofa, depth 435 km, 04:57 Local (1974-08-16 16:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (309 km NW, Tonga) — -19.806, -177.819

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