2026-05-21 15:33:13 UPDATED: (M3.5) Andreanof Islands, Aleutian Islands, Alaska 51.1 -178.6 (90be5)

M3.5 Earthquake - Andreanof Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.5
Date-Time	Universal Time (UTC): 21 May 2026 15:33:14 Time near the Epicenter (1): 21 May 2026 05:33:14 Time in your area (1): 21 May 2026 07:33:14
Location	51.085N 178.567W
Depth	10 km
Distances	160.4 km (99.5 mi) SW of Adak, Alaska 1472.0 km (912.6 mi) ESE of Klyuchi, Russia 1537.1 km (953.0 mi) S of Anadyr, Russia 1572.2 km (974.8 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1587.6 km (984.3 mi) ESE of Vilyuchinsk, Russia
Location Uncertainty	Horizontal: 2.8 km; Vertical 2.0 km
Parameters	Nph = 24; Dmin = 54.9 km; Rmss = 0.96 seconds; Gp = 217° Version =
Event ID	us 6000szc4 ***This event supersedes event AKa2026jzuetz.

(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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