2023-10-22 12:20:17 UPDATED: (M4.0) Rat Islands, Aleutian Islands, Alaska 50.2 178.9 (1cbfb)

[USGS ENS <ens@xxxxxxxxxxxx>]

M4.0 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.0
Date-Time	Universal Time (UTC): 22 Oct 2023 12:20:17 Time near the Epicenter (1): 22 Oct 2023 02:20:17 Time in your area (1): 22 Oct 2023 04:20:17
Location	50.243N 178.870E
Depth	10 km
Distances	363.6 km (225.4 mi) WSW of Adak, Alaska 1373.4 km (851.5 mi) SE of Klyuchi, Russia 1430.4 km (886.9 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1444.3 km (895.4 mi) ESE of Vilyuchinsk, Russia 1448.0 km (897.7 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 4.7 km; Vertical 2.0 km
Parameters	Nph = 49; Dmin = 130.0 km; Rmss = 0.61 seconds; Gp = 224° Version =
Event ID	us 6000lhby ***This event supersedes event AK023dk2sxw.

(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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