2026-03-18 04:36:32 UPDATED: (M4.9) Rat Islands, Aleutian Islands, Alaska 52.1 176.4 (90be5)

M4.9 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.9
Date-Time	Universal Time (UTC): 18 Mar 2026 04:36:32 Time near the Epicenter (1): 17 Mar 2026 18:36:32 Time in your area (1): 17 Mar 2026 20:36:32
Location	52.136N 176.441E
Depth	6 km
Distances	234.8 km (145.5 mi) ESE of Attu Station, Alaska 1115.4 km (691.5 mi) ESE of Klyuchi, Russia 1208.2 km (749.1 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1223.9 km (758.8 mi) ESE of Vilyuchinsk, Russia 1224.2 km (759.0 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 6.0 km; Vertical 4.9 km
Parameters	Nph = 67; Dmin = 143.6 km; Rmss = 0.59 seconds; Gp = 151° Version =
Event ID	us 6000sh32 ***This event supersedes event AKa2026fjwjfq.

(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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