M 5.3 earthquake: South Pacific Ocean (Tonga) — May 17, 1978

M 5.3 earthquake: South Pacific Ocean (Tonga) — May 17, 1978. Epicenter 531 km SW of Nuku'alofa, depth 549 km, 19:10 Local (1978-05-18 07:10 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (531 km SW, Tonga) — -22.959, -179.985

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