M 4.7 earthquake: South Pacific Ocean (Tonga) — May 18, 1973

M 4.7 earthquake: South Pacific Ocean (Tonga) — May 18, 1973. Epicenter 354 km W of Nuku'alofa, depth 595 km, 21:15 Local (1973-05-18 09:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (354 km W, Tonga) — -20.679, -178.593

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