M 5.4 earthquake: South Pacific Ocean (Tonga) — August 9, 2011

M 5.4 earthquake: South Pacific Ocean (Tonga) — August 9, 2011. Epicenter 343 km W of Nuku'alofa, depth 557 km, 23:11 Local (2011-08-09 11:11 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (343 km W, Tonga) — -20.58, -178.464

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