2026-08-04 14:57:25 UPDATED: (M4.3) Andreanof Islands, Aleutian Islands, Alaska 51.6 -173.6 (90be5)

M4.3 Earthquake - Andreanof Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.3
Date-Time	Universal Time (UTC): 4 Aug 2026 14:57:25 Time near the Epicenter (1): 4 Aug 2026 04:57:25 Time in your area (1): 4 Aug 2026 06:57:25
Location	51.565N 173.553W
Depth	31 km
Distances	83.2 km (51.6 mi) SSE of Atka, Alaska 1554.7 km (963.9 mi) SSE of Anadyr, Russia 1750.7 km (1085.4 mi) ESE of Klyuchi, Russia 1796.9 km (1114.1 mi) SW of Anchorage, Alaska 1818.0 km (1127.1 mi) SW of Eagle River, Alaska
Location Uncertainty	Horizontal: 5.1 km; Vertical 5.4 km
Parameters	Nph = 155; Dmin = 83.6 km; Rmss = 0.86 seconds; Gp = 129° Version =
Event ID	us 6000ti0n ***This event supersedes event AKa2026pigqhn.

(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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