M 4.8 earthquake: South Pacific Ocean (Tonga) — September 4, 1991

M 4.8 earthquake: South Pacific Ocean (Tonga) — September 4, 1991. Epicenter 286 km W of Nuku'alofa, depth 562 km, 06:33 Local (1991-09-03 17:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (286 km W, Tonga) — -20.733, -177.942

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