M 4.5 earthquake: South Pacific Ocean (Tonga) — December 20, 2017

M 4.5 earthquake: South Pacific Ocean (Tonga) — December 20, 2017. Epicenter 543 km SW of Nuku'alofa, depth 506 km, 03:50 Local (2017-12-20 15:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (543 km SW, Tonga) — -23.9441, -179.5454

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