M 4.9 earthquake: South Pacific Ocean (Tonga) — October 23, 1975

M 4.9 earthquake: South Pacific Ocean (Tonga) — October 23, 1975. Epicenter 280 km W of Nuku'alofa, depth 486 km, 12:07 Local (1975-10-22 23:07 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (280 km W, Tonga) — -20.356, -177.779

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