M 4.5 earthquake: South Pacific Ocean (Tonga) — April 11, 1999

M 4.5 earthquake: South Pacific Ocean (Tonga) — April 11, 1999. Epicenter 573 km SW of Nuku'alofa, depth 550 km, 07:31 Local (1999-04-10 19:31 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (573 km SW, Tonga) — -23.794, 179.995

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