2021-07-18 20:30:13 UPDATED: (M3.9) Andreanof Islands, Aleutian Islands, Alaska 51.8 -175.2 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

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

Preliminary Report

Magnitude	3.9
Date-Time	18 Jul 2021 20:30:13 UTC 18 Jul 2021 10:30:13 near epicenter 18 Jul 2021 12:30:13 standard time in your timezone
Location	51.774N 175.185W
Depth	48 km
Distances	82.3 km (51.0 mi) SW of Atka, Alaska 1503.5 km (932.1 mi) SSE of Anadyr, Russia 1639.7 km (1016.6 mi) ESE of Klyuchi, Russia 1776.1 km (1101.2 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1792.4 km (1111.3 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 5.4 km; Vertical 2.4 km
Parameters	Nph = 83; Dmin = 56.2 km; Rmss = 0.92 seconds; Gp = 68° Version =
Event ID	us 7000en94 ***This event supersedes event AK02195g16t4.

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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