2025-07-27 06:31:05 (M4.1) Andreanof Islands, Aleutian Islands, Alaska 51.8 -177.8 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

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

Preliminary Report

Magnitude	4.1
Date-Time	Universal Time (UTC): 27 Jul 2025 06:31:05 Time near the Epicenter (1): 26 Jul 2025 20:31:05 Time in your area (1): 26 Jul 2025 22:31:05
Location	51.782N 177.838W
Depth	85 km
Distances	83.6 km (51.8 mi) W of Adak, Alaska 1467.3 km (909.7 mi) S of Anadyr, Russia 1477.5 km (916.0 mi) ESE of Klyuchi, Russia 1600.1 km (992.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1615.5 km (1001.6 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 7.4 km; Vertical 5.6 km
Parameters	Nph = 45; Dmin = 15.0 km; Rmss = 0.46 seconds; Gp = 165° Version =
Event ID	us 6000qvfx

(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
National Earthquake Information Center
U.S. Geological Survey


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