M 4.9 earthquake: South Pacific Ocean (Tonga) — December 9, 1983

M 4.9 earthquake: South Pacific Ocean (Tonga) — December 9, 1983. Epicenter 275 km W of Nuku'alofa, depth 418 km, 05:12 Local (1983-12-08 16:12 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (275 km W, Tonga) — -20.994, -177.867

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