M 4.7 earthquake: South Pacific Ocean (Tonga) — April 22, 1980

M 4.7 earthquake: South Pacific Ocean (Tonga) — April 22, 1980. Epicenter 334 km W of Nuku'alofa, depth 550 km, 00:55 Local (1980-04-22 12:55 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (334 km W, Tonga) — -20.504, -178.359

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