M 6.1 Earthquake: South Pacific Ocean (Tonga) — August 25, 1987

M 6.1 Earthquake: South Pacific Ocean (Tonga) — August 25, 1987. Epicenter 340 km W of Nuku'alofa, depth 569 km, 18:56 Local (1987-08-26 06:56 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (340 km W, Tonga) — -20.749, -178.464

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