2025-09-14 09:00:53 UPDATED: (M4.0) Andreanof Islands, Aleutian Islands, Alaska 52.0 -176.4 (90be5)

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

Preliminary Report

Magnitude	4.0
Date-Time	Universal Time (UTC): 14 Sep 2025 09:00:53 Time near the Epicenter (1): 13 Sep 2025 23:00:53 Time in your area (1): 14 Sep 2025 01:00:53
Location	52.024N 176.404W
Depth	127 km
Distances	23.0 km (14.3 mi) NE of Adak, Alaska 1458.2 km (904.1 mi) SSE of Anadyr, Russia 1552.5 km (962.5 mi) ESE of Klyuchi, Russia 1689.3 km (1047.4 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1704.2 km (1056.6 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 8.2 km; Vertical 3.4 km
Parameters	Nph = 136; Dmin = 14.3 km; Rmss = 0.69 seconds; Gp = 83° Version =
Event ID	us 7000qw4u ***This event supersedes event AK025bt6h7i8.

(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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