M 4.5 earthquake: South Pacific Ocean (Tonga) — August 22, 1987

M 4.5 earthquake: South Pacific Ocean (Tonga) — August 22, 1987. Epicenter 290 km W of Nuku'alofa, depth 426 km, 03:00 Local (1987-08-21 14:00 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (290 km W, Tonga) — -20.985, -178.007

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