M 4.8 earthquake: South Pacific Ocean (Tonga) — May 21, 1987

M 4.8 earthquake: South Pacific Ocean (Tonga) — May 21, 1987. Epicenter 390 km W of Nuku'alofa, depth 626 km, 07:12 Local (1987-05-20 19:12 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (390 km W, Tonga) — -20.814, -178.962

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