2026-06-20 13:49:38 (M4.1) Rat Islands, Aleutian Islands, Alaska 51.1 179.7 (90be5)

M4.1 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.1
Date-Time	Universal Time (UTC): 20 Jun 2026 13:49:39 Time near the Epicenter (1): 20 Jun 2026 03:49:39 Time in your area (1): 20 Jun 2026 05:49:39
Location	51.117N 179.683E
Depth	20 km
Distances	269.2 km (166.9 mi) WSW of Adak, Alaska 1366.0 km (846.9 mi) ESE of Klyuchi, Russia 1453.9 km (901.4 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1468.9 km (910.7 mi) ESE of Vilyuchinsk, Russia 1470.4 km (911.7 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 5.2 km; Vertical 0.0 km
Parameters	Nph = 79; Dmin = 44.5 km; Rmss = 1.40 seconds; Gp = 226° Version =
Event ID	ak a2026mdbjve

(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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