M 5.3 earthquake: South Pacific Ocean (Tonga) — April 15, 1991

M 5.3 earthquake: South Pacific Ocean (Tonga) — April 15, 1991. Epicenter 587 km SW of Nuku'alofa, depth 629 km, 19:33 Local (1991-04-16 07:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (587 km SW, Tonga) — -24.225, -179.859

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