2.5

M2.5 Earthquake 139 km S of Unalaska, Alaska — October 21, 2026

2026-10-21 13:38:00 UTC (2 days ago) · approx. 2:38 AM UTC-11 local

MagnitudeM2.5(ml)
Time13:38 UTC≈ 2:38 AM UTC-11
Depth2.6 kmshallow crustal
Coordinates52.620°, -166.530°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 52.62°, -166.53°

Earthquake Details

Magnitude
2.5 ml
Depth
2.6 km
shallow crustal
Location
52.6200°N
-166.5300°E

Technical Information

Event ID
aka2026uwfrty
Event Type
earthquake
Status
✓ Reviewed
Significance
96
Stations Used
22
Azimuthal Gap
261.0°
Min Station Distance
1.200°
RMS Residual
0.60 sec
Last Updated
2026-10-23 22:49:38 UTC

Nearby Earthquakes (Last 7 Days)

3.7
40 km SSE of Nikolski, Alaska
15 hours ago · 131.1 km deep
3.2
44 km SW of Sand Point, Alaska
21 hours ago · 26.9 km deep
4.0
169 km S of False Pass, Alaska
1 day ago · 10.0 km deep
3.9
203 km SSE of King Cove, Alaska
1 day ago · 10.0 km deep
2.5
155 km S of False Pass, Alaska
2 days ago · 7.6 km deep
3.2
240 km SSE of False Pass, Alaska
2 days ago · 21.3 km deep
2.6
151 km S of False Pass, Alaska
2 days ago · 17.5 km deep
3.3
151 km S of False Pass, Alaska
2 days ago · 21.2 km deep
3.2
159 km S of False Pass, Alaska
2 days ago · 10.9 km deep
4.5
158 km S of False Pass, Alaska
2 days ago · 20.5 km deep

Actions

View on USGSDid You Feel It?

Location

Alaska
View all Alaska earthquakes

Understanding This Data

Magnitude 2.5 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026uwfrty). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, October 21, 2026). M2.5 Earthquake 139 km S of Unalaska, Alaska — October 21, 2026. Retrieved October 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026uwfrty/