M 5.1 earthquake: South Pacific Ocean (Tonga) — January 31, 1991

M 5.1 earthquake: South Pacific Ocean (Tonga) — January 31, 1991. Epicenter 546 km SW of Nuku'alofa, depth 534 km, 07:32 Local (1991-01-31 19:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (546 km SW, Tonga) — -23.63, -179.8

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