USGSOctober 21, 2026
M2.5 earthquake, 139 km S of Unalaska, Alaska
A magnitude 2.5 earthquake was recorded 139 km S of Unalaska, Alaska at a depth of 3 km, according to the U.S. Geological Survey. It was the 10,180th 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
- 139 km S of Unalaska, Alaska
- State
- Alaska
- Magnitude
- 2.5 (local magnitude)
- Depth
- 2.6 km
- Time
- 2026-10-21 13:38:00 UTC
- Status
- reviewed by a seismologist
- Epicentre
- 52.620, -166.530
- 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.