Alaska earthquakes

M3.1 earthquake 31 km SW of Atka, Alaska

A magnitude 3.1 earthquake struck 31 km SW of Atka, Alaska on Fri, May 20, 2022, 11:01 PM HADT (08:01 UTC), 227 km (141 mi) below the surface.

A larger quake followed: M5.3 Andreanof Islands, Aleutian Islands, 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
3.1 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2022-05-21 08:01:45 UTC
Depth
227.5 km (141.3 mi), intermediate-depth
Epicenter
51.984° N, 174.509° 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
3.1ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.8ML, local (Richter)Alaska 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 21.0 km horizontally, 5.2 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
199°, poorly surrounded by stations
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 76 in the 30 days before it.

After

  1. 3.712 km N of Atka, Alaska · 1594 days ago · 138 km deep · 42 km away
  2. 1.950 km SSW of Atka, Alaska · 1594 days ago · 45 km deep · 21 km away
  3. 1.668 km SW of Atka, Alaska · 1593 days ago · 37 km deep · 37 km away
  4. 1.769 km ESE of Adak, Alaska · 1593 days ago · 58 km deep · 85 km away
  5. 2.862 km NNE of Atka, Alaska · 1593 days ago · 174 km deep · 91 km away
  6. 2.682 km SSW of Atka, Alaska · 1592 days ago · 26 km deep · 52 km away
  7. 1.755 km SSW of Atka, Alaska · 1592 days ago · 25 km deep · 28 km away
  8. 1.848 km SSE of Atka, Alaska · 1592 days ago · 42 km deep · 40 km away
  9. 1.760 km SE of Atka, Alaska · 1592 days ago · 59 km deep · 70 km away
  10. 1.881 km E of Adak, Alaska · 1591 days ago · 61 km deep · 71 km away
  11. 2.166 km ENE of Adak, Alaska · 1591 days ago · 143 km deep · 84 km away
  12. 2.580 km ESE of Atka, Alaska · 1591 days ago · 28 km deep · 95 km away
  13. 1.847 km ESE of Atka, Alaska · 1591 days ago · 66 km deep · 67 km away
  14. 1.748 km SSW of Atka, Alaska · 1590 days ago · 45 km deep · 24 km away
  15. 1.6101 km ESE of Adak, Alaska · 1590 days ago · 26 km deep · 85 km away
  16. 2.813 km WNW of Atka, Alaska · 1590 days ago · 228 km deep · 28 km away
  17. 2.065 km NE of Adak, Alaska · 1590 days ago · 151 km deep · 94 km away
  18. 2.580 km ESE of Atka, Alaska · 1590 days ago · 63 km deep · 96 km away
  19. 3.325 km NNW of Atka, Alaska · 1589 days ago · 186 km deep · 46 km away
  20. 3.268 km N of Atka, Alaska · 1589 days ago · 187 km deep · 92 km away
  21. 2.073 km SSW of Atka, Alaska · 1589 days ago · 13 km deep · 44 km away
  22. 3.552 km ESE of Atka, Alaska · 1589 days ago · 74 km deep · 71 km away
  23. 1.757 km E of Atka, Alaska · 1588 days ago · 35 km deep · 79 km away
  24. 1.932 km NE of Atka, Alaska · 1588 days ago · 135 km deep · 64 km away
  25. 1.9102 km SW of Atka, Alaska · 1587 days ago · 37 km deep · 71 km away
  26. 3.080 km WNW of Atka, Alaska · 1587 days ago · 240 km deep · 76 km away
  27. 1.636 km S of Atka, Alaska · 1587 days ago · 47 km deep · 27 km away
  28. 2.07 km SW of Atka, Alaska · 1587 days ago · 168 km deep · 24 km away
  29. 1.965 km ESE of Atka, Alaska · 1587 days ago · 43 km deep · 78 km away
  30. 3.773 km SSW of Atka, Alaska · 1587 days ago · 35 km deep · 43 km away
  31. 1.82 km W of Atka, Alaska · 1586 days ago · 161 km deep · 30 km away
  32. 1.653 km ESE of Adak, Alaska · 1586 days ago · 62 km deep · 98 km away
  33. 2.813 km NW of Atka, Alaska · 1586 days ago · 211 km deep · 36 km away
  34. 1.872 km SE of Atka, Alaska · 1585 days ago · 22 km deep · 80 km away
  35. 1.835 km WNW of Atka, Alaska · 1585 days ago · 179 km deep · 35 km away
  36. 2.57 km NNW of Atka, Alaska · 1585 days ago · 157 km deep · 36 km away
  37. 1.969 km ESE of Adak, Alaska · 1584 days ago · 34 km deep · 99 km away
  38. 2.771 km SW of Atka, Alaska · 1583 days ago · 33 km deep · 39 km away
  39. 2.050 km SE of Atka, Alaska · 1582 days ago · 60 km deep · 60 km away
  40. 2.917 km NNE of Atka, Alaska · 1582 days ago · 208 km deep · 48 km away
  41. 2.256 km E of Atka, Alaska · 1582 days ago · 93 km deep · 80 km away
  42. 1.913 km SW of Atka, Alaska · 1582 days ago · 13 km deep · 18 km away
  43. 2.061 km ESE of Atka, Alaska · 1582 days ago · 61 km deep · 77 km away
  44. 2.359 km WNW of Atka, Alaska · 1581 days ago · 183 km deep · 60 km away
  45. 1.683 km SW of Atka, Alaska · 1581 days ago · 18 km deep · 51 km away
  46. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1581 days ago · 11 km deep · 6 km away
  47. 1.980 km SE of Atka, Alaska · 1581 days ago · 45 km deep · 89 km away
  48. 1.977 km SE of Atka, Alaska · 1581 days ago · 49 km deep · 82 km away
  49. 2.852 km NNE of Atka, Alaska · 1581 days ago · 143 km deep · 83 km away
  50. 1.653 km ESE of Atka, Alaska · 1580 days ago · 55 km deep · 68 km away
  51. 3.641 km S of Atka, Alaska · 1580 days ago · 35 km deep · 22 km away
  52. 2.852 km S of Atka, Alaska · 1580 days ago · 66 km deep · 31 km away
  53. 1.665 km SSW of Atka, Alaska · 1579 days ago · 12 km deep · 41 km away
  54. 1.611 km ENE of Atka, Alaska · 1579 days ago · 106 km deep · 42 km away
  55. 1.547 km WSW of Atka, Alaska · 1579 days ago · 79 km deep · 20 km away
  56. 1.935 km N of Atka, Alaska · 1579 days ago · 179 km deep · 62 km away
  57. 1.687 km ESE of Atka, Alaska · 1578 days ago · 18 km deep · 98 km away
  58. 1.968 km ENE of Adak, Alaska · 1578 days ago · 152 km deep · 81 km away
  59. 1.8103 km ESE of Adak, Alaska · 1578 days ago · 25 km deep · 79 km away
  60. 1.825 km W of Atka, Alaska · 1577 days ago · 116 km deep · 23 km away

The first 60 of at least 200.

Before

  1. 1.934 km SW of Atka, Alaska · 1595 days ago · 72 km deep · 3 km away
  2. 2.214 km SSW of Atka, Alaska · 1595 days ago · 76 km deep · 19 km away
  3. 3.5Andreanof Islands, Aleutian Islands, Alaska · 1596 days ago · 5 km deep · 85 km away
  4. 1.880 km ESE of Atka, Alaska · 1596 days ago · 33 km deep · 94 km away
  5. 1.560 km E of Adak, Alaska · 1597 days ago · 83 km deep · 86 km away
  6. 1.662 km SE of Atka, Alaska · 1597 days ago · 41 km deep · 73 km away
  7. 3.123 km NW of Atka, Alaska · 1598 days ago · 208 km deep · 37 km away
  8. 1.564 km SE of Atka, Alaska · 1598 days ago · 5 km deep · 70 km away
  9. 2.326 km N of Atka, Alaska · 1599 days ago · 198 km deep · 55 km away
  10. 1.789 km SSW of Atka, Alaska · 1600 days ago · 39 km deep · 59 km away
  11. 1.958 km E of Atka, Alaska · 1601 days ago · 115 km deep · 81 km away
  12. 1.857 km ESE of Adak, Alaska · 1601 days ago · 59 km deep · 95 km away
  13. 1.983 km SW of Atka, Alaska · 1602 days ago · 57 km deep · 53 km away
  14. 3.388 km SSW of Atka, Alaska · 1602 days ago · 25 km deep · 61 km away
  15. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1602 days ago · 155 km deep · 46 km away
  16. 3.5Andreanof Islands, Aleutian Islands, Alaska · 1602 days ago · 38 km deep · 49 km away
  17. 1.576 km SSE of Atka, Alaska · 1602 days ago · 34 km deep · 65 km away
  18. 3.596 km ESE of Adak, Alaska · 1602 days ago · 35 km deep · 70 km away
  19. 1.846 km WSW of Atka, Alaska · 1603 days ago · 139 km deep · 21 km away
  20. 1.663 km SSE of Atka, Alaska · 1603 days ago · 37 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000i344 (also filed as ak0226hbjq57). Read Fri, Oct 2, 2026, 8:36 AM UTC.