2026-03-04 19:39:53 UPDATED: (M4.5) Rat Islands, Aleutian Islands, Alaska 52.1 177.0 (90be5)

M4.5 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.5
Date-Time	Universal Time (UTC): 4 Mar 2026 19:39:53 Time near the Epicenter (1): 4 Mar 2026 09:39:53 Time in your area (1): 4 Mar 2026 11:39:53
Location	52.109N 176.979E
Depth	1 km
Distances	270.4 km (167.7 mi) ESE of Attu Station, Alaska 1148.6 km (712.2 mi) ESE of Klyuchi, Russia 1244.9 km (771.8 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1260.6 km (781.6 mi) ESE of Vilyuchinsk, Russia 1260.8 km (781.7 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 8.3 km; Vertical 4.4 km
Parameters	Nph = 109; Dmin = 106.6 km; Rmss = 1.03 seconds; Gp = 156° Version =
Event ID	us 7000s22b ***This event supersedes event AKa2026elidha.

(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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