M 4.5 earthquake: South Pacific Ocean (Tonga) — December 12, 1999

M 4.5 earthquake: South Pacific Ocean (Tonga) — December 12, 1999. Epicenter 536 km SW of Nuku'alofa, depth 500 km, 01:57 Local (1999-12-12 13:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (536 km SW, Tonga) — -23.158, -179.946

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