M 5.5 earthquake: South Pacific Ocean (Tonga) — August 9, 1991

M 5.5 earthquake: South Pacific Ocean (Tonga) — August 9, 1991. Epicenter 475 km SW of Nuku'alofa, depth 465 km, 08:16 Local (1991-08-09 20:16 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (475 km SW, Tonga) — -23.32, -179.185

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