2026-09-11 10:47:10 UPDATED: (M5.7) Andreanof Islands, Aleutian Islands, Alaska 51.1 -178.5 (70fa9)

M5.7 Earthquake - Andreanof Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	5.7
Date-Time	Universal Time (UTC): 11 Sep 2026 10:47:11 Time near the Epicenter (1): 11 Sep 2026 00:47:11 Time in your area (1): 11 Sep 2026 16:17:11
Location	51.104N 178.454W
Depth	13 km
Distances	152.7 km (94.7 mi) SW of Adak, Alaska 1477.7 km (916.2 mi) ESE of Klyuchi, Russia 1536.0 km (952.3 mi) S of Anadyr, Russia 1579.2 km (979.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1594.5 km (988.6 mi) ESE of Vilyuchinsk, Russia
Location Uncertainty	Horizontal: 4.7 km; Vertical 1.9 km
Parameters	Nph = 83; Dmin = 55.6 km; Rmss = 1.00 seconds; Gp = 213° Version =
Event ID	ak a2026sadcxu

(1) Nominal Standard Time; local and daylight savings time zone may differ.
For updates, maps, and technical information
see: Event Page or USGS Earthquake Hazards Program
Alaska Earthquake Center
Geophysical Institute, University of Alaska Fairbanks

https://earthquake.alaska.edu

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