2025-08-28 11:07:48 UPDATED: (M5.9) Rat Islands, Aleutian Islands, Alaska 52.0 179.9 (70fa9)

M5.9 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	5.9
Date-Time	Universal Time (UTC): 28 Aug 2025 11:07:48 Time near the Epicenter (1): 28 Aug 2025 01:07:48 Time in your area (1): 28 Aug 2025 16:37:48
Location	52.000N 179.861E
Depth	133 km
Distances	241.5 km (149.7 mi) W of Adak, Alaska 1326.6 km (822.5 mi) ESE of Klyuchi, Russia 1424.8 km (883.3 mi) S of Anadyr, Russia 1440.4 km (893.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1456.0 km (902.7 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 3.8 km; Vertical 4.5 km
Parameters	Nph = 111; Dmin = 16.1 km; Rmss = 1.03 seconds; Gp = 31° Version =
Event ID	us 7000qrj0

(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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