USGSOctober 21, 2026
M3.3 earthquake, 237 km SE of Attu Station, Alaska
A magnitude 3.3 earthquake was recorded 237 km SE of Attu Station, Alaska at a depth of 5 km, according to the U.S. Geological Survey. It was the 10,181st 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.
M3.3
The notice
- Issued by
- U.S. Geological Survey
- Area
- 237 km SE of Attu Station, Alaska
- State
- Alaska
- Magnitude
- 3.3 (local magnitude)
- Depth
- 5.0 km
- Time
- 2026-10-21 13:57:46 UTC
- Status
- reviewed by a seismologist
- Epicentre
- 51.268, 175.515
- 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.