M 4.5 earthquake: South Pacific Ocean (Tonga) — October 16, 2026

M 4.5 earthquake: South Pacific Ocean (Tonga) — October 16, 2026. Epicenter 545 km SW of Nuku'alofa, depth 535 km, 09:26 Local (2026-10-16 21:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (545 km SW, Tonga) — -23.6209, -179.7966