M 4.6 earthquake: South Pacific Ocean (Tonga) — October 20, 2026

M 4.6 earthquake: South Pacific Ocean (Tonga) — October 20, 2026. Epicenter 571 km SW of Nuku'alofa, depth 536 km, 04:13 Local (2026-10-19 16:13 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (571 km SW, Tonga) — -23.5497, 179.8713

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