M 5.1 earthquake: South Pacific Ocean (Tonga) — January 10, 1978

M 5.1 earthquake: South Pacific Ocean (Tonga) — January 10, 1978. Epicenter 586 km SW of Nuku'alofa, depth 620 km, 22:19 Local (1978-01-10 10:19 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (586 km SW, Tonga) — -23.74, 179.821

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