2021-10-10 10:59:22 UPDATED: (M4.0) Andreanof Islands, Aleutian Islands, Alaska 51.9 -175.0 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

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

Preliminary Report

Magnitude	4.0
Date-Time	10 Oct 2021 10:59:22 UTC 10 Oct 2021 00:59:22 near epicenter 10 Oct 2021 02:59:22 standard time in your timezone
Location	51.875N 174.976W
Depth	80 km
Distances	64.1 km (39.8 mi) SW of Atka, Alaska 1496.0 km (927.5 mi) SSE of Anadyr, Russia 1647.5 km (1021.4 mi) ESE of Klyuchi, Russia 1788.5 km (1108.9 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1803.4 km (1118.1 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 3.4 km; Vertical 8.9 km
Parameters	Nph = 97; Dmin = 66.6 km; Rmss = 0.54 seconds; Gp = 176° Version =
Event ID	us 6000ftjq ***This event supersedes event AK021d07e8ra.

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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