2023-10-28 08:38:53 UPDATED: (M3.9) Andreanof Islands, Aleutian Islands, Alaska 51.4 -177.4 (90be5)

M3.9 Earthquake - Andreanof Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	3.9
Date-Time	Universal Time (UTC): 28 Oct 2023 08:38:54 Time near the Epicenter (1): 27 Oct 2023 22:38:54 Time in your area (1): 28 Oct 2023 00:38:54
Location	51.407N 177.448W
Depth	56 km
Distances	76.6 km (47.5 mi) SW of Adak, Alaska 1512.6 km (937.8 mi) S of Anadyr, Russia 1521.2 km (943.2 mi) ESE of Klyuchi, Russia 1637.0 km (1015.0 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1652.8 km (1024.7 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 4.0 km; Vertical 8.9 km
Parameters	Nph = 75; Dmin = 42.1 km; Rmss = 0.41 seconds; Gp = 139° Version =
Event ID	us 7000l79d ***This event supersedes event AK023dtxr6x.

(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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