M 5.0 earthquake: South Pacific Ocean (Tonga) — March 30, 1977

M 5.0 earthquake: South Pacific Ocean (Tonga) — March 30, 1977. Epicenter 330 km W of Nuku'alofa, depth 543 km, 05:43 Local (1977-03-29 17:43 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (330 km W, Tonga) — -20.329, -178.277

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