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USGSSeptember 30, 2026

M4.2 earthquake, 286 km W of Adak, Alaska

A magnitude 4.2 earthquake was recorded 286 km W of Adak, Alaska at a depth of 119 km, according to the U.S. Geological Survey. It was the 9,459th 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.

M4.2

The notice

Issued by
U.S. Geological Survey
Area
286 km W of Adak, Alaska
State
Alaska
Magnitude
4.2 (body-wave magnitude)
Depth
119.2 km
Time
2026-09-30 19:10:09 UTC
Status
reviewed by a seismologist
Epicentre
51.880, 179.212
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.