M 4.7 earthquake: South Pacific Ocean (Tonga) — April 9, 1997

M 4.7 earthquake: South Pacific Ocean (Tonga) — April 9, 1997. Epicenter 593 km SW of Nuku'alofa, depth 550 km, 15:39 Local (1997-04-09 03:39 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (593 km SW, Tonga) — -23.832, 179.801

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