M 5.4 earthquake: South Pacific Ocean (Tonga) — September 1, 1987

M 5.4 earthquake: South Pacific Ocean (Tonga) — September 1, 1987. Epicenter 446 km W of Nuku'alofa, depth 593 km, 10:46 Local (1987-09-01 22:46 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (446 km W, Tonga) — -21.87, -179.455

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