2026-06-23 10:41:29 (M4.0) Rat Islands, Aleutian Islands, Alaska 51.8 176.1 (90be5)

M4.0 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.0
Date-Time	Universal Time (UTC): 23 Jun 2026 10:41:29 Time near the Epicenter (1): 23 Jun 2026 00:41:29 Time in your area (1): 23 Jun 2026 02:41:29
Location	51.813N 176.123E
Depth	20 km
Distances	230.9 km (143.1 mi) ESE of Attu Station, Alaska 1115.7 km (691.7 mi) ESE of Klyuchi, Russia 1194.9 km (740.8 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1210.0 km (750.2 mi) ESE of Vilyuchinsk, Russia 1211.3 km (751.0 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 16.2 km; Vertical 0.0 km
Parameters	Nph = 49; Dmin = 166.8 km; Rmss = 1.40 seconds; Gp = 206° Version =
Event ID	ak a2026mijenu

(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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