M 4.8 earthquake: South Pacific Ocean (Tonga) — March 16, 1977

M 4.8 earthquake: South Pacific Ocean (Tonga) — March 16, 1977. Epicenter 298 km NW of Nuku'alofa, depth 432 km, 08:34 Local (1977-03-15 19:34 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (298 km NW, Tonga) — -19.822, -177.714

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