M 5.4 earthquake: South Pacific Ocean (Tonga) — December 17, 1983

M 5.4 earthquake: South Pacific Ocean (Tonga) — December 17, 1983. Epicenter 389 km W of Nuku'alofa, depth 618 km, 17:48 Local (1983-12-17 05:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (389 km W, Tonga) — -21.022, -178.972

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