2021-08-01 17:28:05 (M3.9) Andreanof Islands, Aleutian Islands, Alaska 51.3 -178.1 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

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

Preliminary Report

Magnitude	3.9
Date-Time	1 Aug 2021 17:28:06 UTC 1 Aug 2021 07:28:06 near epicenter 1 Aug 2021 09:28:06 standard time in your timezone
Location	51.284N 178.107W
Depth	40 km
Distances	121.4 km (75.2 mi) WSW of Adak, Alaska 1488.3 km (922.7 mi) ESE of Klyuchi, Russia 1519.3 km (942.0 mi) S of Anadyr, Russia 1595.2 km (989.0 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1612.3 km (999.6 mi) ESE of Vilyuchinsk, Russia
Location Uncertainty	Horizontal: 7.5 km; Vertical 15.1 km
Parameters	Nph = 33; Dmin = 76.7 km; Rmss = 0.78 seconds; Gp = 206° Version =
Event ID	us 6000f1af

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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