M 4.6 earthquake: South Pacific Ocean (Tonga) — May 22, 1976

M 4.6 earthquake: South Pacific Ocean (Tonga) — May 22, 1976. Epicenter 388 km W of Nuku'alofa, depth 632 km, 07:10 Local (1976-05-21 19:10 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (388 km W, Tonga) — -20.672, -178.919

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