M 4.5 earthquake: South Pacific Ocean (Tonga) — April 9, 1991

M 4.5 earthquake: South Pacific Ocean (Tonga) — April 9, 1991. Epicenter 373 km W of Nuku'alofa, depth 617 km, 13:45 Local (1991-04-09 01:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (373 km W, Tonga) — -20.383, -178.718

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