M 4.5 earthquake: South Pacific Ocean (Tonga) — August 21, 1999

M 4.5 earthquake: South Pacific Ocean (Tonga) — August 21, 1999. Epicenter 316 km W of Nuku'alofa, depth 604 km, 15:08 Local (1999-08-22 03:08 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (316 km W, Tonga) — -20.557, -178.202

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