M 4.5 earthquake: South Pacific Ocean (Tonga) — May 18, 2004

M 4.5 earthquake: South Pacific Ocean (Tonga) — May 18, 2004. Epicenter 540 km SW of Nuku'alofa, depth 540 km, 04:25 Local (2004-05-18 16:25 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (540 km SW, Tonga) — -23.766, -179.645

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