2025-04-20 23:28:33 (M3.9) Andreanof Islands, Aleutian Islands, Alaska 51.2 -178.6 (90be5)

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

Preliminary Report

Magnitude	3.9
Date-Time	Universal Time (UTC): 20 Apr 2025 23:28:33 Time near the Epicenter (1): 20 Apr 2025 13:28:33 Time in your area (1): 20 Apr 2025 15:28:33
Location	51.172N 178.628W
Depth	35 km
Distances	158.9 km (98.5 mi) WSW of Adak, Alaska 1463.3 km (907.3 mi) ESE of Klyuchi, Russia 1527.0 km (946.7 mi) S of Anadyr, Russia 1565.3 km (970.5 mi) ESE of Petropavlovsk-Kamchatsky, Russia 1580.7 km (980.1 mi) ESE of Vilyuchinsk, Russia
Location Uncertainty	Horizontal: 7.0 km; Vertical 1.9 km
Parameters	Nph = 76; Dmin = 44.4 km; Rmss = 0.58 seconds; Gp = 120° Version =
Event ID	us 6000q7g7

(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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