M 4.6 earthquake: South Pacific Ocean (Tonga) — October 18, 1990

M 4.6 earthquake: South Pacific Ocean (Tonga) — October 18, 1990. Epicenter 374 km W of Nuku'alofa, depth 649 km, 20:12 Local (1990-10-19 08:12 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (374 km W, Tonga) — -21.777, -178.768

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