M 5.5 earthquake: South Pacific Ocean (Tonga) — January 21, 2004

M 5.5 earthquake: South Pacific Ocean (Tonga) — January 21, 2004. Epicenter 346 km NW of Neiafu, depth 30 km, 16:15 Local (2004-01-22 04:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (346 km NW, Tonga) — -17.256, -176.903

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