Alaska earthquakes

M2.2 earthquake 171 km S of Adak, Alaska

A magnitude 2.2 earthquake struck 171 km S of Adak, Alaska on Wed, Dec 22, 2021, 8:32 PM HAST (06:32 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.8 161 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.2 (ml), micro
Local time
UTC
2021-12-23 06:32:17 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.354° N, 176.237° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.8161 km S of Adak, Alaska · 1731 days ago · 10 km deep · 10 km away
  2. 2.3147 km S of Adak, Alaska · 1727 days ago · 26 km deep · 50 km away
  3. 2.7213 km SSW of Adak, Alaska · 1720 days ago · 10 km deep · 83 km away
  4. 4.0Andreanof Isl., Aleutian Islands, Alaska · 1718 days ago · 10 km deep · 60 km away
  5. 2.2167 km S of Adak, Alaska · 1710 days ago · 25 km deep · 35 km away
  6. 2.195 km S of Adak, Alaska · 1707 days ago · 26 km deep · 76 km away
  7. 1.772 km SSE of Adak, Alaska · 1706 days ago · 2 km deep · 100 km away
  8. 1.978 km SSE of Adak, Alaska · 1694 days ago · 20 km deep · 95 km away
  9. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1693 days ago · 25 km deep · 60 km away
  10. 3.2164 km S of Adak, Alaska · 1692 days ago · 10 km deep · 7 km away
  11. 2.8172 km S of Adak, Alaska · 1692 days ago · 10 km deep · 1 km away
  12. 2.1164 km S of Adak, Alaska · 1692 days ago · 14 km deep · 6 km away
  13. 2.1167 km S of Adak, Alaska · 1692 days ago · 24 km deep · 4 km away
  14. 2.9200 km SE of Adak, Alaska · 1685 days ago · 10 km deep · 96 km away
  15. 3.0201 km SSE of Adak, Alaska · 1678 days ago · 23 km deep · 80 km away

Before

  1. 2.7186 km SSE of Adak, Alaska · 1737 days ago · 10 km deep · 80 km away
  2. 3.1178 km SSW of Adak, Alaska · 1741 days ago · 10 km deep · 85 km away
  3. 2.3161 km SE of Adak, Alaska · 1741 days ago · 10 km deep · 99 km away
  4. 2.574 km SSE of Adak, Alaska · 1759 days ago · 26 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021geimeed. Read Thu, Sep 24, 2026, 9:41 AM UTC.