M 4.6 earthquake: South Pacific Ocean (Tonga) — August 18, 2026

M 4.6 earthquake: South Pacific Ocean (Tonga) — August 18, 2026. Epicenter 401 km S of Nuku'alofa, depth 10 km, 06:03 Local (2026-08-18 18:03 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (401 km S, Tonga) — -24.7454, -175.0821

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