M 5.1 Earthquake: South Pacific Ocean (Tonga) — February 12, 1983

M 5.1 Earthquake: South Pacific Ocean (Tonga) — February 12, 1983. Epicenter 280 km W of Nuku'alofa, depth 488 km, 06:40 Local (1983-02-11 17:40 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (280 km W, Tonga) — -20.701, -177.879

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