2026-06-20 08:39:42 (M3.5) Rat Islands, Aleutian Islands, Alaska 52.2 176.4 (90be5)

M3.5 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.5
Date-Time	Universal Time (UTC): 20 Jun 2026 08:39:43 Time near the Epicenter (1): 19 Jun 2026 22:39:43 Time in your area (1): 20 Jun 2026 00:39:43
Location	52.218N 176.369E
Depth	19 km
Distances	227.0 km (140.7 mi) ESE of Attu Station, Alaska 1106.5 km (686.0 mi) ESE of Klyuchi, Russia 1201.6 km (745.0 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1217.3 km (754.7 mi) E of Vilyuchinsk, Russia 1217.4 km (754.8 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 20.6 km; Vertical 5.7 km
Parameters	Nph = 44; Dmin = 144.6 km; Rmss = 1.60 seconds; Gp = 178° Version =
Event ID	ak a2026mcrbgx

(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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