2.1

M2.1 Earthquake 90 km SW of Adak, Alaska — September 21, 2026

2026-09-21 23:02:51 UTC (2026-09-21) · approx. 11:02 AM UTC-12 local

MagnitudeM2.1(ml)
Time23:02 UTC≈ 11:02 AM UTC-12
Depth32.5 kmshallow crustal
Coordinates51.404°, -177.708°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 51.40°, -177.71°

Earthquake Details

Magnitude
2.1 ml
Depth
32.5 km
shallow crustal
Location
51.4040°N
-177.7080°E

Technical Information

Event ID
aka2026stnwmw
Event Type
earthquake
Status
✓ Reviewed
Significance
68
Stations Used
24
Azimuthal Gap
221.0°
Min Station Distance
0.400°
RMS Residual
0.30 sec
Last Updated
2026-09-30 05:37:59 UTC

Nearby Earthquakes (Last 7 Days)

3.5
66 km SE of Atka, Alaska
3 hours ago · 35.0 km deep
4.1
93 km SW of Atka, Alaska
8 hours ago · 50.3 km deep
4.1
34 km S of Adak, Alaska
23 hours ago · 49.1 km deep
4.0
75 km SE of Adak, Alaska
1 day ago · 17.3 km deep
4.2
286 km W of Adak, Alaska
3 days ago · 119.2 km deep
2.9
Rat Islands, Aleutian Islands, Alaska
5 days ago · 155.9 km deep
3.0
Rat Islands, Aleutian Islands, Alaska
5 days ago · 35.0 km deep
2.9
83 km ESE of Adak, Alaska
5 days ago · 38.5 km deep
2.6
97 km SSE of Atka, Alaska
5 days ago · 40.0 km deep
2.9
34 km NW of Atka, Alaska
5 days ago · 213.8 km deep

Actions

View on USGSDid You Feel It?

Location

Alaska
View all Alaska earthquakes

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026stnwmw). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 21, 2026). M2.1 Earthquake 90 km SW of Adak, Alaska — September 21, 2026. Retrieved September 30, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026stnwmw/