M 4.7 earthquake: South Pacific Ocean (Tonga) — March 13, 1987

M 4.7 earthquake: South Pacific Ocean (Tonga) — March 13, 1987. Epicenter 423 km SW of Nuku'alofa, depth 78 km, 06:49 Local (1987-03-13 18:49 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (423 km SW, Tonga) — -23.014, -178.797

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