Alaska earthquakes

M3.8 earthquake 51 km NNW of Atka, Alaska

A magnitude 3.8 earthquake struck 51 km NNW of Atka, Alaska on Tue, Oct 11, 2022, 3:23 AM HADT (12:23 UTC), 196 km (122 mi) below the surface.

A larger quake followed: M4.0 82 km NW 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
3.8 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2022-10-11 12:23:30 UTC
Depth
196.4 km (122.0 mi), intermediate-depth
Epicenter
52.626° N, 174.489° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.8mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.092 · 31 stations
3.9mb, body-waveAlaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 13.8 km horizontally, 11.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
128°
Stations used
70

Nearby

Within 100 km, magnitude 1.5 and up: 49 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 1.636 km SSW of Atka, Alaska · 1452 days ago · 59 km deep · 80 km away
  2. 2.166 km ENE of Atka, Alaska · 1450 days ago · 8 km deep · 90 km away
  3. 1.948 km S of Atka, Alaska · 1450 days ago · 44 km deep · 98 km away
  4. 2.134 km ENE of Atka, Alaska · 1450 days ago · 6 km deep · 67 km away
  5. 2.142 km SSW of Atka, Alaska · 1449 days ago · 57 km deep · 89 km away
  6. 1.942 km E of Atka, Alaska · 1448 days ago · 13 km deep · 75 km away
  7. 2.182 km ENE of Adak, Alaska · 1446 days ago · 111 km deep · 91 km away
  8. 2.951 km NE of Atka, Alaska · 1444 days ago · 187 km deep · 61 km away
  9. 1.911 km SSW of Atka, Alaska · 1444 days ago · 10 km deep · 60 km away
  10. 1.840 km S of Atka, Alaska · 1442 days ago · 29 km deep · 92 km away
  11. 1.850 km W of Atka, Alaska · 1442 days ago · 83 km deep · 59 km away
  12. 2.847 km ESE of Atka, Alaska · 1442 days ago · 10 km deep · 91 km away
  13. 1.782 km WSW of Atka, Alaska · 1442 days ago · 88 km deep · 93 km away
  14. 3.234 km ESE of Atka, Alaska · 1441 days ago · 187 km deep · 77 km away
  15. 1.854 km SSW of Atka, Alaska · 1441 days ago · 18 km deep · 99 km away
  16. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1441 days ago · 26 km deep · 90 km away
  17. 3.677 km NW of Atka, Alaska · 1435 days ago · 10 km deep · 40 km away
  18. 4.082 km NW of Atka, Alaska · 1434 days ago · 11 km deep · 43 km away
  19. 1.783 km WSW of Atka, Alaska · 1433 days ago · 71 km deep · 97 km away
  20. 2.8Andreanof Islands, Aleutian Islands, Alaska · 1433 days ago · 191 km deep · 30 km away
  21. 3.1Andreanof Islands, Aleutian Islands, Alaska · 1433 days ago · 246 km deep · 88 km away
  22. 1.856 km SW of Atka, Alaska · 1433 days ago · 48 km deep · 93 km away
  23. 2.298 km NNE of Atka, Alaska · 1433 days ago · 140 km deep · 73 km away
  24. 2.054 km SW of Atka, Alaska · 1430 days ago · 59 km deep · 89 km away
  25. 1.957 km SSW of Atka, Alaska · 1429 days ago · 19 km deep · 96 km away
  26. 1.940 km SE of Atka, Alaska · 1429 days ago · 66 km deep · 89 km away
  27. 2.046 km ESE of Atka, Alaska · 1429 days ago · 70 km deep · 91 km away
  28. 1.779 km WSW of Atka, Alaska · 1428 days ago · 25 km deep · 94 km away
  29. 1.777 km W of Atka, Alaska · 1428 days ago · 28 km deep · 80 km away
  30. 1.861 km SW of Atka, Alaska · 1427 days ago · 19 km deep · 100 km away
  31. 1.767 km W of Atka, Alaska · 1426 days ago · 13 km deep · 75 km away
  32. 1.938 km SE of Atka, Alaska · 1425 days ago · 23 km deep · 89 km away
  33. 2.158 km SSW of Atka, Alaska · 1421 days ago · 8 km deep · 99 km away
  34. 2.383 km NE of Adak, Alaska · 1420 days ago · 143 km deep · 100 km away
  35. 1.864 km WSW of Atka, Alaska · 1415 days ago · 89 km deep · 75 km away
  36. 2.254 km ESE of Atka, Alaska · 1414 days ago · 42 km deep · 99 km away
  37. 2.732 km S of Atka, Alaska · 1414 days ago · 79 km deep · 81 km away
  38. 2.290 km ENE of Adak, Alaska · 1413 days ago · 157 km deep · 79 km away
  39. 2.840 km SSW of Atka, Alaska · 1411 days ago · 76 km deep · 86 km away
  40. 2.382 km W of Atka, Alaska · 1408 days ago · 109 km deep · 81 km away
  41. 3.813 km S of Atka, Alaska · 1407 days ago · 71 km deep · 63 km away
  42. 3.272 km NNW of Atka, Alaska · 1405 days ago · 193 km deep · 20 km away
  43. 2.028 km SE of Atka, Alaska · 1405 days ago · 12 km deep · 79 km away
  44. 2.223 km SSE of Atka, Alaska · 1405 days ago · 72 km deep · 75 km away
  45. 2.020 km S of Atka, Alaska · 1405 days ago · 62 km deep · 72 km away
  46. 1.866 km SW of Atka, Alaska · 1405 days ago · 50 km deep · 97 km away
  47. 1.978 km WSW of Atka, Alaska · 1403 days ago · 80 km deep · 99 km away
  48. 3.077 km ENE of Atka, Alaska · 1403 days ago · 184 km deep · 96 km away
  49. 1.952 km W of Atka, Alaska · 1396 days ago · 14 km deep · 62 km away

Before

  1. 1.941 km WSW of Atka, Alaska · 1453 days ago · 45 km deep · 62 km away
  2. 1.954 km SSW of Atka, Alaska · 1454 days ago · 16 km deep · 94 km away
  3. 1.762 km E of Atka, Alaska · 1456 days ago · 101 km deep · 99 km away
  4. 3.248 km SSE of Atka, Alaska · 1456 days ago · 35 km deep · 100 km away
  5. 1.758 km SSW of Atka, Alaska · 1457 days ago · 49 km deep · 99 km away
  6. 2.126 km E of Atka, Alaska · 1457 days ago · 129 km deep · 69 km away
  7. 2.211 km NE of Atka, Alaska · 1457 days ago · 160 km deep · 48 km away
  8. 1.736 km SE of Atka, Alaska · 1458 days ago · 61 km deep · 86 km away
  9. 2.639 km S of Atka, Alaska · 1458 days ago · 17 km deep · 90 km away
  10. 3.19 km SSW of Atka, Alaska · 1461 days ago · 170 km deep · 59 km away
  11. 1.981 km W of Atka, Alaska · 1464 days ago · 126 km deep · 85 km away
  12. 2.059 km SW of Atka, Alaska · 1465 days ago · 69 km deep · 89 km away
  13. 2.043 km SW of Atka, Alaska · 1466 days ago · 85 km deep · 79 km away
  14. 3.178 km WSW of Atka, Alaska · 1467 days ago · 12 km deep · 88 km away
  15. 2.175 km ENE of Adak, Alaska · 1468 days ago · 158 km deep · 96 km away
  16. 1.732 km W of Atka, Alaska · 1468 days ago · 23 km deep · 47 km away
  17. 2.054 km SSW of Atka, Alaska · 1468 days ago · 42 km deep · 95 km away
  18. 3.068 km E of Atka, Alaska · 1473 days ago · 11 km deep · 100 km away
  19. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1478 days ago · 8 km deep · 46 km away
  20. 3.653 km E of Atka, Alaska · 1478 days ago · 9 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000im31 (also filed as ak022d1vwrjm). Read Fri, Oct 2, 2026, 9:02 PM UTC.