M 4.6 earthquake: South Pacific Ocean (Tonga) — September 23, 1973

M 4.6 earthquake: South Pacific Ocean (Tonga) — September 23, 1973. Epicenter 479 km W of Nuku'alofa, depth 609 km, 05:43 Local (1973-09-23 17:43 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (479 km W, Tonga) — -22.111, -179.734

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