2026-08-21 01:13:04 UPDATED: (M3.1) Alaska Peninsula 56.9 -157.7 (90be5)

M3.1 Earthquake - Alaska Peninsula

Preliminary Report

Magnitude	3.1
Date-Time	Universal Time (UTC): 21 Aug 2026 01:13:05 Time near the Epicenter (1): 20 Aug 2026 17:13:05 Time in your area (1): 20 Aug 2026 17:13:05
Location	56.880N 157.656W
Depth	131 km
Distances	72.2 km (44.8 mi) SSW of Ugashik, Alaska 656.2 km (406.8 mi) SW of Anchorage, Alaska 677.0 km (419.8 mi) SW of Eagle River, Alaska 690.6 km (428.2 mi) SW of Knik-Fairview, Alaska 1366.7 km (847.4 mi) WSW of Whitehorse, Canada
Location Uncertainty	Horizontal: 16.1 km; Vertical 6.0 km
Parameters	Nph = 52; Dmin = 122.3 km; Rmss = 0.90 seconds; Gp = 184° Version =
Event ID	ak a2026qmplcl ***This event has been revised.

(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
Alaska Earthquake Center
Geophysical Institute, University of Alaska Fairbanks

https://earthquake.alaska.edu

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