M 4.6 Earthquake: South Pacific Ocean (Tonga) — September 23, 1997

M 4.6 Earthquake: South Pacific Ocean (Tonga) — September 23, 1997. Epicenter 335 km NW of Nuku'alofa, depth 386 km, 21:14 Local (1997-09-24 09:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (335 km NW, Tonga) — -19.357, -177.806

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