M 4.5 earthquake: South Pacific Ocean (Tonga) — December 17, 1983

M 4.5 earthquake: South Pacific Ocean (Tonga) — December 17, 1983. Epicenter 521 km SW of Nuku'alofa, depth 565 km, 15:32 Local (1983-12-18 03:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (521 km SW, Tonga) — -23.706, -179.463

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