M 5.5 earthquake: South Pacific Ocean (Tonga) — April 6, 1991

M 5.5 earthquake: South Pacific Ocean (Tonga) — April 6, 1991. Epicenter 596 km SW of Nuku'alofa, depth 549 km, 16:48 Local (1991-04-06 04:48 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (596 km SW, Tonga) — -24.168, 179.984

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