M 4.5 earthquake: Aleutian Islands (Atka, USA) — October 31, 2026

M 4.5 earthquake: Aleutian Islands (Atka, USA) — October 31, 2026. Epicenter 121 km SE of Atka, depth 1 km, 09:50 Local (2026-10-31 18:50 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Aleutian Islands (121 km SE of Atka, USA) — 51.521, -172.815

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