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USGSOctober 21, 2026

M3.1 earthquake, 129 km E of McCarthy, Alaska

A magnitude 3.1 earthquake was recorded 129 km E of McCarthy, Alaska at a depth of 4 km, according to the U.S. Geological Survey. It was the 10,147th earthquake of magnitude 2.5 or more the USGS located in and near the U.S. in 2026, against 12,608 a year on average in 2016-2025.

M3.1

The notice

Issued by
U.S. Geological Survey
Area
129 km E of McCarthy, Alaska
State
Alaska
Magnitude
3.1 (local magnitude)
Depth
4.3 km
Time
2026-10-21 21:22:56 UTC
Status
reviewed by a seismologist
Epicentre
61.477, -140.496
Official source
U.S. Geological Survey: the notice at its source

Warnings and earthquakes in AlaskaEarthquakes, October 2026

Source: U.S. Geological Survey: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The record around this notice