M 4.5 earthquake: South Pacific Ocean (Tonga) — July 21, 1987

M 4.5 earthquake: South Pacific Ocean (Tonga) — July 21, 1987. Epicenter 435 km W of Nuku'alofa, depth 641 km, 08:35 Local (1987-07-21 20:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (435 km W, Tonga) — -21.598, -179.395

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