M 4.5 earthquake: South Pacific Ocean (Tonga) — July 23, 1999

M 4.5 earthquake: South Pacific Ocean (Tonga) — July 23, 1999. Epicenter 272 km W of Nuku'alofa, depth 508 km, 16:56 Local (1999-07-23 03:56 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (272 km W, Tonga) — -20.857, -177.823

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