M 4.6 earthquake: South Pacific Ocean (Tonga) — September 23, 1987

M 4.6 earthquake: South Pacific Ocean (Tonga) — September 23, 1987. Epicenter 568 km SW of Nuku'alofa, depth 507 km, 10:35 Local (1987-09-23 22:35 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (568 km SW, Tonga) — -23.785, -179.953

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