M 4.7 earthquake: South Pacific Ocean (Tonga) — July 13, 1991

M 4.7 earthquake: South Pacific Ocean (Tonga) — July 13, 1991. Epicenter 620 km SW of Nuku'alofa, depth 638 km, 12:27 Local (1991-07-13 00:27 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (620 km SW, Tonga) — -23.94, 179.561

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