M 4.6 earthquake: South Pacific Ocean (Tonga) — September 18, 1973

M 4.6 earthquake: South Pacific Ocean (Tonga) — September 18, 1973. Epicenter 299 km S of Nuku'alofa, depth 33 km, 04:31 Local (1973-09-17 15:31 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (299 km S, Tonga) — -23.83, -175.235

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