M 5.4 earthquake: South Pacific Ocean (Tonga) — July 17, 1978

M 5.4 earthquake: South Pacific Ocean (Tonga) — July 17, 1978. Epicenter 565 km SW of Nuku'alofa, depth 546 km, 12:09 Local (1978-07-17 00:09 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (565 km SW, Tonga) — -23.641, 179.999

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