2026-04-03 04:27:55 (M3.9) Rat Islands, Aleutian Islands, Alaska 51.8 176.1 (90be5)

M3.9 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.9
Date-Time	Universal Time (UTC): 3 Apr 2026 04:27:55 Time near the Epicenter (1): 2 Apr 2026 18:27:55 Time in your area (1): 2 Apr 2026 20:27:55
Location	51.775N 176.140E
Depth	5 km
Distances	234.1 km (145.1 mi) ESE of Attu Station, Alaska 1119.0 km (693.8 mi) ESE of Klyuchi, Russia 1197.0 km (742.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1212.1 km (751.5 mi) ESE of Vilyuchinsk, Russia 1213.5 km (752.4 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 34.4 km; Vertical 0.0 km
Parameters	Nph = 11; Dmin = 166.8 km; Rmss = 1.00 seconds; Gp = 208° Version =
Event ID	ak a2026gnfrya

(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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