M 5.5 earthquake: South Pacific Ocean (Tonga) — December 15, 1980

M 5.5 earthquake: South Pacific Ocean (Tonga) — December 15, 1980. Epicenter 433 km S of Nuku'alofa, depth 33 km, 10:18 Local (1980-12-15 22:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (433 km S, Tonga) — -25.025, -175.451

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