2021-07-31 14:01:21 (M4.5) Rat Islands, Aleutian Islands, Alaska 51.4 177.8 (1cbfb)

[ens@xxxxxxxxxxxx (USGS ENS)]

M4.5 Earthquake - Rat Islands, Aleutian Islands, Alaska

Preliminary Report

Magnitude	4.5
Date-Time	31 Jul 2021 14:01:21 UTC 31 Jul 2021 04:01:21 near epicenter 31 Jul 2021 06:01:21 standard time in your timezone
Location	51.417N 177.754E
Depth	143 km
Distances	350.9 km (217.5 mi) ESE of Attu Station, Alaska 1234.6 km (765.5 mi) ESE of Klyuchi, Russia 1313.7 km (814.5 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1330.3 km (824.8 mi) ESE of Vilyuchinsk, Russia 1331.9 km (825.8 mi) ESE of Yelizovo, Russia
Location Uncertainty	Horizontal: 7.2 km; Vertical 11.4 km
Parameters	Nph = 29; Dmin = 82.4 km; Rmss = 0.59 seconds; Gp = 222° Version =
Event ID	us 6000f0zr

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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