M 4.7 earthquake: South Pacific Ocean (Tonga) — July 21, 1987

M 4.7 earthquake: South Pacific Ocean (Tonga) — July 21, 1987. Epicenter 548 km SW of Nuku'alofa, depth 563 km, 00:14 Local (1987-07-21 12:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (548 km SW, Tonga) — -23.406, -179.945

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