M 4.5 earthquake: South Pacific Ocean (Tonga) — March 23, 1987

M 4.5 earthquake: South Pacific Ocean (Tonga) — March 23, 1987. Epicenter 580 km SW of Nuku'alofa, depth 520 km, 23:22 Local (1987-03-23 11:22 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (580 km SW, Tonga) — -23.84, 179.945

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