Alaska earthquakes

M2.9 earthquake 79 km SSE of Atka, Alaska

A magnitude 2.9 earthquake struck 79 km SSE of Atka, Alaska on Sat, Sep 30, 2023, 7:20 PM HADT (04:20 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.4 9 km E 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-10-01 04:20:57 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.511° N, 173.856° 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
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.4ML, 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 6.8 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
289°, poorly surrounded by stations
Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 92 in the 60 days after this one and 73 in the 30 days before it.

After

  1. 2.574 km S of Atka, Alaska · 1096 days ago · 35 km deep · 20 km away
  2. 1.616 km WNW of Atka, Alaska · 1096 days ago · 10 km deep · 92 km away
  3. 2.131 km ESE of Atka, Alaska · 1096 days ago · 8 km deep · 61 km away
  4. 2.742 km W of Atka, Alaska · 1095 days ago · 10 km deep · 99 km away
  5. 1.940 km ESE of Atka, Alaska · 1095 days ago · 10 km deep · 65 km away
  6. 2.3100 km SSE of Atka, Alaska · 1095 days ago · 7 km deep · 25 km away
  7. 1.829 km ESE of Atka, Alaska · 1095 days ago · 13 km deep · 65 km away
  8. 1.660 km WSW of Atka, Alaska · 1095 days ago · 66 km deep · 94 km away
  9. 2.526 km SSW of Atka, Alaska · 1095 days ago · 74 km deep · 62 km away
  10. 1.957 km SW of Atka, Alaska · 1095 days ago · 38 km deep · 67 km away
  11. 1.932 km ESE of Atka, Alaska · 1094 days ago · 17 km deep · 67 km away
  12. 2.138 km ESE of Atka, Alaska · 1094 days ago · 13 km deep · 60 km away
  13. 1.966 km SW of Atka, Alaska · 1092 days ago · 29 km deep · 71 km away
  14. 3.0103 km SSW of Atka, Alaska · 1090 days ago · 35 km deep · 82 km away
  15. 3.245 km SE of Atka, Alaska · 1089 days ago · 10 km deep · 50 km away
  16. 2.949 km ESE of Atka, Alaska · 1089 days ago · 11 km deep · 54 km away
  17. 3.579 km SE of Atka, Alaska · 1089 days ago · 35 km deep · 37 km away
  18. 3.519 km N of Atka, Alaska · 1089 days ago · 203 km deep · 99 km away
  19. 2.578 km SW of Atka, Alaska · 1089 days ago · 35 km deep · 76 km away
  20. 2.850 km ESE of Atka, Alaska · 1089 days ago · 10 km deep · 54 km away
  21. 1.854 km SSW of Atka, Alaska · 1088 days ago · 14 km deep · 60 km away
  22. 1.941 km E of Atka, Alaska · 1088 days ago · 13 km deep · 73 km away
  23. 2.636 km S of Atka, Alaska · 1088 days ago · 66 km deep · 46 km away
  24. 2.143 km E of Atka, Alaska · 1087 days ago · 28 km deep · 74 km away
  25. 1.960 km SE of Atka, Alaska · 1087 days ago · 55 km deep · 46 km away
  26. 1.536 km ESE of Atka, Alaska · 1087 days ago · 14 km deep · 57 km away
  27. 2.1160 km S of Atka, Alaska · 1087 days ago · 4 km deep · 83 km away
  28. 3.549 km SE of Atka, Alaska · 1087 days ago · 5 km deep · 46 km away
  29. 1.637 km ESE of Atka, Alaska · 1087 days ago · 6 km deep · 62 km away
  30. 1.634 km ESE of Atka, Alaska · 1087 days ago · 7 km deep · 59 km away
  31. 1.938 km ESE of Atka, Alaska · 1087 days ago · 7 km deep · 63 km away
  32. 3.623 km SE of Atka, Alaska · 1087 days ago · 172 km deep · 58 km away
  33. 3.951 km E of Atka, Alaska · 1087 days ago · 78 km deep · 78 km away
  34. 2.330 km SSW of Atka, Alaska · 1086 days ago · 91 km deep · 62 km away
  35. 1.619 km WNW of Atka, Alaska · 1084 days ago · 6 km deep · 91 km away
  36. 3.467 km WSW of Atka, Alaska · 1082 days ago · 84 km deep · 98 km away
  37. 3.259 km SE of Atka, Alaska · 1081 days ago · 26 km deep · 50 km away
  38. 3.216 km SSE of Atka, Alaska · 1080 days ago · 83 km deep · 64 km away
  39. 2.7151 km S of Atka, Alaska · 1078 days ago · 10 km deep · 77 km away
  40. 1.952 km SSW of Atka, Alaska · 1077 days ago · 37 km deep · 62 km away
  41. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1077 days ago · 10 km deep · 99 km away
  42. 1.933 km ESE of Atka, Alaska · 1076 days ago · 10 km deep · 67 km away
  43. 1.936 km ESE of Atka, Alaska · 1075 days ago · 9 km deep · 63 km away
  44. 2.151 km SE of Atka, Alaska · 1073 days ago · 24 km deep · 34 km away
  45. 1.992 km SW of Atka, Alaska · 1073 days ago · 26 km deep · 91 km away
  46. 1.941 km ESE of Atka, Alaska · 1073 days ago · 1 km deep · 61 km away
  47. 1.836 km ESE of Atka, Alaska · 1073 days ago · 5 km deep · 59 km away
  48. 1.928 km SE of Atka, Alaska · 1073 days ago · 3 km deep · 57 km away
  49. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1072 days ago · 21 km deep · 39 km away
  50. 1.843 km SW of Atka, Alaska · 1072 days ago · 70 km deep · 78 km away
  51. 2.431 km ESE of Atka, Alaska · 1071 days ago · 12 km deep · 68 km away
  52. 3.046 km ESE of Atka, Alaska · 1071 days ago · 10 km deep · 53 km away
  53. 1.915 km SSW of Atka, Alaska · 1070 days ago · 83 km deep · 69 km away
  54. 2.042 km E of Atka, Alaska · 1070 days ago · 26 km deep · 79 km away
  55. 1.879 km SW of Atka, Alaska · 1070 days ago · 47 km deep · 91 km away
  56. 3.663 km SE of Atka, Alaska · 1069 days ago · 35 km deep · 48 km away
  57. 4.156 km E of Atka, Alaska · 1068 days ago · 86 km deep · 88 km away
  58. 2.940 km SE of Atka, Alaska · 1068 days ago · 10 km deep · 53 km away
  59. 2.752 km SSW of Atka, Alaska · 1067 days ago · 35 km deep · 47 km away
  60. 2.7164 km SSE of Atka, Alaska · 1067 days ago · 10 km deep · 84 km away

The first 60 of 92.

Before

  1. 2.272 km WSW of Atka, Alaska · 1097 days ago · 60 km deep · 100 km away
  2. 2.939 km SSW of Atka, Alaska · 1099 days ago · 62 km deep · 54 km away
  3. 1.732 km ESE of Atka, Alaska · 1099 days ago · 11 km deep · 66 km away
  4. 1.845 km E of Atka, Alaska · 1099 days ago · 16 km deep · 72 km away
  5. 2.589 km ESE of Atka, Alaska · 1099 days ago · 73 km deep · 80 km away
  6. 1.739 km ESE of Atka, Alaska · 1100 days ago · 9 km deep · 61 km away
  7. 3.0127 km SE of Atka, Alaska · 1100 days ago · 35 km deep · 83 km away
  8. 2.3109 km SSE of Atka, Alaska · 1100 days ago · 16 km deep · 30 km away
  9. 1.635 km ESE of Atka, Alaska · 1101 days ago · 6 km deep · 58 km away
  10. 1.652 km SSE of Atka, Alaska · 1101 days ago · 7 km deep · 27 km away
  11. 1.831 km ESE of Atka, Alaska · 1101 days ago · 13 km deep · 64 km away
  12. 2.0109 km S of Atka, Alaska · 1101 days ago · 3 km deep · 39 km away
  13. 1.651 km SSW of Atka, Alaska · 1101 days ago · 40 km deep · 52 km away
  14. 3.048 km ESE of Atka, Alaska · 1102 days ago · 10 km deep · 52 km away
  15. 3.244 km ESE of Atka, Alaska · 1102 days ago · 13 km deep · 56 km away
  16. 3.150 km ESE of Atka, Alaska · 1102 days ago · 14 km deep · 63 km away
  17. 2.799 km S of Atka, Alaska · 1103 days ago · 10 km deep · 35 km away
  18. 3.043 km SE of Atka, Alaska · 1104 days ago · 10 km deep · 50 km away
  19. 2.171 km E of Atka, Alaska · 1105 days ago · 11 km deep · 99 km away
  20. 2.5125 km S of Atka, Alaska · 1105 days ago · 10 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000lf7m (also filed as ak023cl7r8ib). Read Thu, Oct 1, 2026, 6:49 PM UTC.