M 5.4 earthquake: South Pacific Ocean (Tonga) — October 20, 1973

M 5.4 earthquake: South Pacific Ocean (Tonga) — October 20, 1973. Epicenter 435 km W of Nuku'alofa, depth 614 km, 07:53 Local (1973-10-20 19:53 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (435 km W, Tonga) — -21.685, -179.379

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