M 4.6 earthquake: South Pacific Ocean (Tonga) — March 20, 2004

M 4.6 earthquake: South Pacific Ocean (Tonga) — March 20, 2004. Epicenter 311 km NW of Nuku'alofa, depth 550 km, 20:34 Local (2004-03-21 08:34 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (311 km NW, Tonga) — -19.514, -177.651

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