Alaska earthquakes

M2.1 earthquake 91 km ESE of Atka, Alaska

A magnitude 2.1 earthquake struck 91 km ESE of Atka, Alaska on Tue, Dec 28, 2021, 5:43 AM HAST (15:43 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M4.2 75 km NE of Atka, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.1 (ml), micro
Local time
UTC
2021-12-28 15:43:06 UTC
Depth
12.7 km (7.9 mi), shallow
Epicenter
52.011° N, 172.894° 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
18

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 3.247 km S of Atka, Alaska · 1725 days ago · 64 km deep · 85 km away
  2. 4.1142 km ESE of Atka, Alaska · 1723 days ago · 35 km deep · 50 km away
  3. 4.275 km NE of Atka, Alaska · 1721 days ago · 187 km deep · 70 km away
  4. 3.518 km NNE of Atka, Alaska · 1721 days ago · 146 km deep · 90 km away
  5. 3.5112 km SE of Atka, Alaska · 1719 days ago · 41 km deep · 44 km away
  6. 2.8128 km E of Atka, Alaska · 1719 days ago · 53 km deep · 53 km away
  7. 3.160 km SE of Atka, Alaska · 1714 days ago · 6 km deep · 46 km away
  8. 2.956 km ESE of Atka, Alaska · 1713 days ago · 14 km deep · 40 km away
  9. 3.066 km SSE of Atka, Alaska · 1713 days ago · 35 km deep · 65 km away
  10. 2.027 km S of Atka, Alaska · 1711 days ago · 91 km deep · 94 km away
  11. 3.184 km ESE of Atka, Alaska · 1708 days ago · 35 km deep · 8 km away
  12. 2.962 km ESE of Atka, Alaska · 1708 days ago · 35 km deep · 37 km away
  13. 3.7Andreanof Islands, Aleutian Islands, Alaska · 1706 days ago · 42 km deep · 27 km away
  14. 2.923 km SE of Atka, Alaska · 1704 days ago · 81 km deep · 74 km away
  15. 2.762 km SSE of Atka, Alaska · 1699 days ago · 35 km deep · 70 km away
  16. 3.2102 km ESE of Atka, Alaska · 1698 days ago · 35 km deep · 14 km away
  17. 1.935 km S of Atka, Alaska · 1697 days ago · 41 km deep · 88 km away
  18. 3.2187 km E of Atka, Alaska · 1697 days ago · 35 km deep · 98 km away
  19. 2.155 km S of Atka, Alaska · 1696 days ago · 33 km deep · 98 km away
  20. 2.157 km SE of Atka, Alaska · 1695 days ago · 34 km deep · 61 km away
  21. 1.622 km SE of Atka, Alaska · 1692 days ago · 13 km deep · 72 km away
  22. 3.0Andreanof Islands, Aleutian Islands, Alaska · 1692 days ago · 10 km deep · 21 km away
  23. 2.157 km SE of Atka, Alaska · 1690 days ago · 24 km deep · 44 km away
  24. 2.254 km NNE of Atka, Alaska · 1690 days ago · 137 km deep · 99 km away
  25. 1.955 km ESE of Atka, Alaska · 1689 days ago · 58 km deep · 40 km away
  26. 2.324 km SSE of Atka, Alaska · 1688 days ago · 85 km deep · 77 km away
  27. 2.335 km ESE of Atka, Alaska · 1686 days ago · 148 km deep · 56 km away
  28. 4.226 km ENE of Atka, Alaska · 1676 days ago · 173 km deep · 73 km away
  29. 2.852 km ESE of Atka, Alaska · 1676 days ago · 137 km deep · 40 km away

Before

  1. 3.175 km SE of Atka, Alaska · 1738 days ago · 33 km deep · 37 km away
  2. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1740 days ago · 17 km deep · 25 km away
  3. 2.8155 km SE of Atka, Alaska · 1741 days ago · 28 km deep · 85 km away
  4. 3.3122 km ESE of Atka, Alaska · 1742 days ago · 34 km deep · 33 km away
  5. 2.250 km ESE of Atka, Alaska · 1746 days ago · 62 km deep · 43 km away
  6. 3.1169 km SE of Atka, Alaska · 1747 days ago · 10 km deep · 90 km away
  7. 4.084 km SE of Atka, Alaska · 1750 days ago · 35 km deep · 45 km away
  8. 3.123 km S of Atka, Alaska · 1750 days ago · 178 km deep · 85 km away
  9. 2.971 km ESE of Atka, Alaska · 1752 days ago · 40 km deep · 26 km away
  10. 4.0189 km ESE of Atka, Alaska · 1753 days ago · 39 km deep · 98 km away
  11. 2.07 km E of Atka, Alaska · 1754 days ago · 6 km deep · 84 km away
  12. 4.373 km SSE of Atka, Alaska · 1754 days ago · 43 km deep · 87 km away
  13. 2.879 km ESE of Atka, Alaska · 1760 days ago · 32 km deep · 25 km away
  14. 3.568 km S of Atka, Alaska · 1765 days ago · 91 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021gmxqd3y. Read Mon, Sep 28, 2026, 11:48 PM UTC.