M 4.7 earthquake: South Pacific Ocean (Tonga) — September 4, 1991

M 4.7 earthquake: South Pacific Ocean (Tonga) — September 4, 1991. Epicenter 383 km W of Nuku'alofa, depth 600 km, 07:45 Local (1991-09-03 19:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (383 km W, Tonga) — -21.18, -178.91

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