2026-03-04 13:26:59 UPDATED: (M5.4) Rat Islands, Aleutian Islands, Alaska 52.2 176.3 (90be5)

M5.4 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	5.4
Date-Time	Universal Time (UTC): 4 Mar 2026 13:27:00 Time near the Epicenter (1): 4 Mar 2026 03:27:00 Time in your area (1): 4 Mar 2026 05:27:00
Location	52.237N 176.315E
Depth	10 km
Distances	222.8 km (138.1 mi) ESE of Attu Station, Alaska 1102.2 km (683.4 mi) ESE of Klyuchi, Russia 1197.5 km (742.4 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1213.2 km (752.2 mi) E of Vilyuchinsk, Russia 1213.4 km (752.3 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 6.2 km; Vertical 1.9 km
Parameters	Nph = 65; Dmin = 153.8 km; Rmss = 0.92 seconds; Gp = 126° Version =
Event ID	us 7000s1z1

(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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