2026-03-16 23:17:55 UPDATED: (M3.4) Rat Islands, Aleutian Islands, Alaska 51.4 177.2 (90be5)

M3.4 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.4
Date-Time	Universal Time (UTC): 16 Mar 2026 23:17:55 Time near the Epicenter (1): 16 Mar 2026 13:17:55 Time in your area (1): 16 Mar 2026 15:17:55
Location	51.381N 177.201E
Depth	16 km
Distances	319.7 km (198.2 mi) ESE of Attu Station, Alaska 1204.5 km (746.8 mi) ESE of Klyuchi, Russia 1279.3 km (793.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1294.1 km (802.3 mi) ESE of Vilyuchinsk, Russia 1296.0 km (803.5 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 9.0 km; Vertical 17.4 km
Parameters	Nph = 36; Dmin = 110.5 km; Rmss = 0.59 seconds; Gp = 217° Version =
Event ID	us 6000sgqu ***This event supersedes event AKa2026fhqbsx.

(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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