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USGSSeptember 13, 2026

M3.5 earthquake, 134 km SW of Adak, Alaska

A magnitude 3.5 earthquake was recorded 134 km SW of Adak, Alaska at a depth of 20 km, according to the U.S. Geological Survey. It was the 8,985th 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.

M3.5

The notice

Issued by
U.S. Geological Survey
Area
134 km SW of Adak, Alaska
State
Alaska
Magnitude
3.5 (local magnitude)
Depth
20.0 km
Time
2026-09-13 10:02:36 UTC
Status
reviewed by a seismologist
Epicentre
51.043, -178.036
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.