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USGSSeptember 4, 2026

M2.5 earthquake, 91 km SSW of Unalaska, Alaska

A magnitude 2.5 earthquake was recorded 91 km SSW of Unalaska, Alaska at a depth of 37 km, according to the U.S. Geological Survey. It was the 8,595th 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.

M2.5

The notice

Issued by
U.S. Geological Survey
Area
91 km SSW of Unalaska, Alaska
State
Alaska
Magnitude
2.5 (local magnitude)
Depth
37.1 km
Time
2026-09-04 07:59:56 UTC
Status
reviewed by a seismologist
Epicentre
53.070, -166.808
Official source
U.S. Geological Survey: the notice at its source

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.