Alaska earthquakes

M3.3 earthquake 20 km NNE of Atka, Alaska

A magnitude 3.3 earthquake struck 20 km NNE of Atka, Alaska on Sat, Mar 26, 2022, 9:21 PM HADT (06:21 UTC), 197 km (122 mi) below the surface.

A larger quake followed: M4.5 62 km NNW 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
3.3 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2022-03-27 06:21:59 UTC
Depth
196.9 km (122.3 mi), intermediate-depth
Epicenter
52.361° N, 174.072° 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
3.3ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.091 · 16 stations
3.2ML, 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 14.8 km horizontally, 10.6 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
148°
Stations used
46

Nearby

Within 100 km, magnitude 1.5 and up: 115 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 2.615 km WSW of Atka, Alaska · 1652 days ago · 178 km deep · 33 km away
  2. 1.72 km SSW of Atka, Alaska · 1651 days ago · 11 km deep · 22 km away
  3. 3.834 km NW of Atka, Alaska · 1651 days ago · 186 km deep · 30 km away
  4. 2.977 km WNW of Atka, Alaska · 1650 days ago · 257 km deep · 80 km away
  5. 1.973 km SW of Atka, Alaska · 1650 days ago · 42 km deep · 92 km away
  6. 1.722 km S of Atka, Alaska · 1649 days ago · 70 km deep · 42 km away
  7. 1.741 km SW of Atka, Alaska · 1649 days ago · 72 km deep · 60 km away
  8. 1.632 km SE of Atka, Alaska · 1649 days ago · 27 km deep · 42 km away
  9. 1.927 km SSE of Atka, Alaska · 1648 days ago · 64 km deep · 42 km away
  10. 2.646 km ESE of Atka, Alaska · 1648 days ago · 10 km deep · 53 km away
  11. 2.760 km S of Atka, Alaska · 1648 days ago · 35 km deep · 78 km away
  12. 1.825 km S of Atka, Alaska · 1648 days ago · 57 km deep · 45 km away
  13. 1.628 km SSW of Atka, Alaska · 1647 days ago · 59 km deep · 49 km away
  14. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1647 days ago · 77 km deep · 76 km away
  15. 2.768 km ESE of Atka, Alaska · 1647 days ago · 64 km deep · 66 km away
  16. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1647 days ago · 245 km deep · 79 km away
  17. 2.152 km SSE of Atka, Alaska · 1645 days ago · 40 km deep · 65 km away
  18. 3.462 km SSW of Atka, Alaska · 1645 days ago · 35 km deep · 83 km away
  19. 3.169 km SW of Atka, Alaska · 1644 days ago · 67 km deep · 89 km away
  20. 2.140 km SW of Atka, Alaska · 1643 days ago · 148 km deep · 60 km away
  21. 1.965 km WSW of Atka, Alaska · 1642 days ago · 65 km deep · 82 km away
  22. 4.056 km SW of Atka, Alaska · 1642 days ago · 35 km deep · 77 km away
  23. 1.629 km SSW of Atka, Alaska · 1641 days ago · 62 km deep · 50 km away
  24. 1.848 km E of Atka, Alaska · 1641 days ago · 75 km deep · 47 km away
  25. 3.09 km SW of Atka, Alaska · 1640 days ago · 35 km deep · 29 km away
  26. 1.619 km SW of Atka, Alaska · 1640 days ago · 10 km deep · 39 km away
  27. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1638 days ago · 20 km deep · 75 km away
  28. 2.738 km SSE of Atka, Alaska · 1638 days ago · 10 km deep · 55 km away
  29. 2.538 km S of Atka, Alaska · 1637 days ago · 79 km deep · 57 km away
  30. 3.336 km SE of Atka, Alaska · 1637 days ago · 31 km deep · 47 km away
  31. 1.623 km SE of Atka, Alaska · 1636 days ago · 21 km deep · 35 km away
  32. 2.376 km E of Atka, Alaska · 1636 days ago · 13 km deep · 66 km away
  33. 1.545 km SW of Atka, Alaska · 1636 days ago · 19 km deep · 64 km away
  34. 2.188 km ESE of Atka, Alaska · 1635 days ago · 45 km deep · 89 km away
  35. 2.2101 km ESE of Atka, Alaska · 1635 days ago · 46 km deep · 99 km away
  36. 3.6Andreanof Islands, Aleutian Islands, Alaska · 1633 days ago · 49 km deep · 85 km away
  37. 2.156 km SSE of Atka, Alaska · 1633 days ago · 24 km deep · 71 km away
  38. 3.130 km NNE of Atka, Alaska · 1632 days ago · 201 km deep · 11 km away
  39. 3.584 km ESE of Atka, Alaska · 1630 days ago · 35 km deep · 88 km away
  40. 2.133 km SW of Atka, Alaska · 1628 days ago · 72 km deep · 53 km away
  41. 2.755 km NNW of Atka, Alaska · 1628 days ago · 171 km deep · 45 km away
  42. 1.712 km SW of Atka, Alaska · 1628 days ago · 11 km deep · 32 km away
  43. 2.170 km ESE of Atka, Alaska · 1628 days ago · 34 km deep · 75 km away
  44. 3.477 km NW of Atka, Alaska · 1628 days ago · 200 km deep · 70 km away
  45. 2.156 km S of Atka, Alaska · 1627 days ago · 13 km deep · 76 km away
  46. 2.177 km SSE of Atka, Alaska · 1627 days ago · 5 km deep · 91 km away
  47. 2.761 km E of Atka, Alaska · 1626 days ago · 154 km deep · 55 km away
  48. 3.7Andreanof Islands, Aleutian Islands, Alaska · 1626 days ago · 235 km deep · 33 km away
  49. 1.633 km SSW of Atka, Alaska · 1625 days ago · 56 km deep · 54 km away
  50. 2.163 km ESE of Atka, Alaska · 1625 days ago · 47 km deep · 64 km away
  51. 2.775 km SE of Atka, Alaska · 1624 days ago · 35 km deep · 87 km away
  52. 1.944 km SE of Atka, Alaska · 1624 days ago · 71 km deep · 54 km away
  53. 2.339 km N of Atka, Alaska · 1623 days ago · 139 km deep · 21 km away
  54. 1.636 km SSW of Atka, Alaska · 1623 days ago · 59 km deep · 57 km away
  55. 1.712 km SW of Atka, Alaska · 1622 days ago · 13 km deep · 32 km away
  56. 1.940 km S of Atka, Alaska · 1621 days ago · 56 km deep · 60 km away
  57. 4.562 km NNW of Atka, Alaska · 1621 days ago · 193 km deep · 50 km away
  58. 3.723 km NNW of Atka, Alaska · 1621 days ago · 102 km deep · 21 km away
  59. 1.753 km WSW of Atka, Alaska · 1621 days ago · 81 km deep · 72 km away
  60. 3.264 km SE of Atka, Alaska · 1620 days ago · 35 km deep · 76 km away

The first 60 of 115.

Before

  1. 1.840 km SE of Atka, Alaska · 1655 days ago · 24 km deep · 52 km away
  2. 1.629 km S of Atka, Alaska · 1655 days ago · 67 km deep · 49 km away
  3. 2.417 km N of Atka, Alaska · 1655 days ago · 168 km deep · 9 km away
  4. 2.080 km SSE of Atka, Alaska · 1656 days ago · 26 km deep · 95 km away
  5. 2.280 km SSE of Atka, Alaska · 1656 days ago · 1 km deep · 97 km away
  6. 1.972 km SSW of Atka, Alaska · 1657 days ago · 42 km deep · 93 km away
  7. 1.953 km SE of Atka, Alaska · 1657 days ago · 17 km deep · 64 km away
  8. 1.860 km SW of Atka, Alaska · 1657 days ago · 46 km deep · 80 km away
  9. 3.1100 km NNE of Atka, Alaska · 1658 days ago · 220 km deep · 81 km away
  10. 1.963 km SE of Atka, Alaska · 1658 days ago · 44 km deep · 72 km away
  11. 3.257 km SSW of Atka, Alaska · 1658 days ago · 35 km deep · 78 km away
  12. 2.073 km S of Atka, Alaska · 1658 days ago · 28 km deep · 93 km away
  13. 2.072 km WSW of Atka, Alaska · 1659 days ago · 58 km deep · 90 km away
  14. 1.937 km SSW of Atka, Alaska · 1660 days ago · 65 km deep · 58 km away
  15. 1.722 km SE of Atka, Alaska · 1660 days ago · 1 km deep · 36 km away
  16. 2.757 km ESE of Atka, Alaska · 1660 days ago · 31 km deep · 60 km away
  17. 3.9101 km NNW of Atka, Alaska · 1661 days ago · 223 km deep · 90 km away
  18. 2.627 km SW of Atka, Alaska · 1661 days ago · 6 km deep · 47 km away
  19. 2.447 km E of Atka, Alaska · 1661 days ago · 81 km deep · 46 km away
  20. 2.969 km WNW of Atka, Alaska · 1662 days ago · 219 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000h8cl (also filed as ak0223ybx6yc). Read Mon, Oct 5, 2026, 2:44 PM UTC.