2026-09-18 09:23:44 (M3.6) Andreanof Islands, Aleutian Islands, Alaska 51.4 -173.3 (90be5)

M3.6 Earthquake - Andreanof Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.6
Date-Time	Universal Time (UTC): 18 Sep 2026 09:23:45 Time near the Epicenter (1): 17 Sep 2026 23:23:45 Time in your area (1): 18 Sep 2026 01:23:45
Location	51.364N 173.278W
Depth	0 km
Distances	112.4 km (69.7 mi) SE of Atka, Alaska 1581.5 km (980.5 mi) SSE of Anadyr, Russia 1778.0 km (1102.4 mi) ESE of Klyuchi, Russia 1799.8 km (1115.9 mi) SW of Anchorage, Alaska 1821.0 km (1129.0 mi) SW of Eagle River, Alaska
Location Uncertainty	Horizontal: 9.9 km; Vertical 0.0 km
Parameters	Nph = 28; Dmin = 111.2 km; Rmss = 0.80 seconds; Gp = 299° Version =
Event ID	ak a2026smympm

(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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