Alaska earthquakes

M2.1 earthquake 140 km SSE of Atka, Alaska

A magnitude 2.1 earthquake struck 140 km SSE of Atka, Alaska on Tue, May 18, 2021, 1:26 AM HADT (10:26 UTC), 38 km (24 mi) below the surface.

A larger quake followed: M5.1 75 km SE 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
2021-05-18 10:26:56 UTC
Depth
38.1 km (23.7 mi), shallow
Epicenter
51.015° N, 173.485° 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
15

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 3.955 km SSE of Atka, Alaska · 1952 days ago · 35 km deep · 85 km away
  2. 4.295 km SE of Atka, Alaska · 1951 days ago · 16 km deep · 61 km away
  3. 4.281 km SE of Atka, Alaska · 1951 days ago · 41 km deep · 76 km away
  4. 5.175 km SE of Atka, Alaska · 1951 days ago · 21 km deep · 81 km away
  5. 3.879 km SE of Atka, Alaska · 1951 days ago · 45 km deep · 74 km away
  6. 3.6123 km SSE of Atka, Alaska · 1951 days ago · 39 km deep · 32 km away
  7. 4.198 km SE of Atka, Alaska · 1951 days ago · 45 km deep · 56 km away
  8. 4.099 km SE of Atka, Alaska · 1951 days ago · 35 km deep · 58 km away
  9. 2.4118 km SSE of Atka, Alaska · 1942 days ago · 37 km deep · 30 km away
  10. 3.3107 km SSE of Atka, Alaska · 1939 days ago · 33 km deep · 42 km away
  11. 2.0141 km SE of Atka, Alaska · 1939 days ago · 24 km deep · 63 km away
  12. 2.6163 km S of Atka, Alaska · 1937 days ago · 27 km deep · 62 km away
  13. 2.5159 km SSE of Atka, Alaska · 1936 days ago · 10 km deep · 34 km away
  14. 3.2Andreanof Islands, Aleutian Islands, Alaska · 1932 days ago · 35 km deep · 54 km away
  15. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1931 days ago · 35 km deep · 54 km away
  16. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1930 days ago · 35 km deep · 77 km away
  17. 4.189 km SSE of Atka, Alaska · 1930 days ago · 30 km deep · 55 km away
  18. 2.994 km SE of Atka, Alaska · 1919 days ago · 11 km deep · 55 km away
  19. 2.4135 km SSE of Atka, Alaska · 1914 days ago · 32 km deep · 22 km away
  20. 2.2146 km S of Atka, Alaska · 1913 days ago · 34 km deep · 36 km away
  21. 3.0210 km S of Atka, Alaska · 1910 days ago · 32 km deep · 90 km away
  22. 3.270 km SE of Atka, Alaska · 1907 days ago · 35 km deep · 89 km away
  23. 2.498 km SSW of Atka, Alaska · 1902 days ago · 28 km deep · 85 km away
  24. 2.297 km SSW of Atka, Alaska · 1902 days ago · 25 km deep · 85 km away
  25. 1.883 km SSE of Atka, Alaska · 1900 days ago · 28 km deep · 58 km away
  26. 1.9107 km S of Atka, Alaska · 1900 days ago · 29 km deep · 65 km away
  27. 1.686 km SE of Atka, Alaska · 1898 days ago · 23 km deep · 73 km away
  28. 1.590 km SSE of Atka, Alaska · 1897 days ago · 19 km deep · 51 km away
  29. 1.5106 km S of Atka, Alaska · 1897 days ago · 26 km deep · 64 km away

Before

  1. 3.0177 km SSE of Atka, Alaska · 1959 days ago · 22 km deep · 39 km away
  2. 2.684 km SSE of Atka, Alaska · 1960 days ago · 35 km deep · 59 km away
  3. 3.345 km SSE of Atka, Alaska · 1971 days ago · 56 km deep · 96 km away
  4. 3.7126 km SSE of Atka, Alaska · 1972 days ago · 38 km deep · 17 km away
  5. 2.363 km S of Atka, Alaska · 1974 days ago · 21 km deep · 83 km away
  6. 2.194 km SE of Atka, Alaska · 1974 days ago · 18 km deep · 62 km away
  7. 1.978 km SE of Atka, Alaska · 1978 days ago · 12 km deep · 78 km away
  8. 2.5191 km SSE of Atka, Alaska · 1980 days ago · 10 km deep · 60 km away
  9. 3.168 km SE of Atka, Alaska · 1980 days ago · 35 km deep · 91 km away
  10. 4.0163 km SE of Atka, Alaska · 1982 days ago · 26 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0216cea20v. Read Thu, Sep 24, 2026, 12:09 PM UTC.