M 5.4 earthquake: South Pacific Ocean (Tonga) — October 15, 1975

M 5.4 earthquake: South Pacific Ocean (Tonga) — October 15, 1975. Epicenter 401 km S of Nuku'alofa, depth 33 km, 05:24 Local (1975-10-15 17:24 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (401 km S, Tonga) — -24.746, -175.18

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