2025-08-29 09:14:25 UPDATED: (M5.5) Rat Islands, Aleutian Islands, Alaska 51.6 179.6 (70fa9)

M5.5 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	5.5
Date-Time	Universal Time (UTC): 29 Aug 2025 09:14:25 Time near the Epicenter (1): 28 Aug 2025 23:14:25 Time in your area (1): 29 Aug 2025 14:44:25
Location	51.632N 179.558E
Depth	83 km
Distances	264.3 km (163.9 mi) W of Adak, Alaska 1328.7 km (823.8 mi) ESE of Klyuchi, Russia 1430.0 km (886.6 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1445.5 km (896.2 mi) ESE of Vilyuchinsk, Russia 1446.0 km (896.5 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 6.1 km; Vertical 4.6 km
Parameters	Nph = 111; Dmin = 29.8 km; Rmss = 0.57 seconds; Gp = 118° Version =
Event ID	us 7000qru7

(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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