Alaska earthquakes

M3.0 earthquake 46 km ESE of Atka, Alaska

A magnitude 3.0 earthquake struck 46 km ESE of Atka, Alaska on Thu, Oct 26, 2023, 5:21 PM HADT (02:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 129 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-10-27 02:21:54 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.965° N, 173.628° 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
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.105 · 12 stations
2.2ML, 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 3.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
302°, poorly surrounded by stations
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 73 in the 60 days after this one and 63 in the 30 days before it.

After

  1. 1.915 km SSW of Atka, Alaska · 1070 days ago · 83 km deep · 47 km away
  2. 2.042 km E of Atka, Alaska · 1070 days ago · 26 km deep · 27 km away
  3. 3.663 km SE of Atka, Alaska · 1070 days ago · 35 km deep · 17 km away
  4. 2.054 km WSW of Atka, Alaska · 1069 days ago · 119 km deep · 93 km away
  5. 4.156 km E of Atka, Alaska · 1069 days ago · 86 km deep · 35 km away
  6. 2.940 km SE of Atka, Alaska · 1068 days ago · 10 km deep · 6 km away
  7. 2.752 km SSW of Atka, Alaska · 1067 days ago · 35 km deep · 60 km away
  8. 2.059 km SE of Atka, Alaska · 1066 days ago · 24 km deep · 16 km away
  9. 1.872 km SSW of Atka, Alaska · 1066 days ago · 15 km deep · 79 km away
  10. 1.822 km WSW of Atka, Alaska · 1065 days ago · 9 km deep · 61 km away
  11. 1.731 km WSW of Atka, Alaska · 1065 days ago · 79 km deep · 68 km away
  12. 1.737 km ESE of Atka, Alaska · 1065 days ago · 7 km deep · 12 km away
  13. 2.456 km ESE of Atka, Alaska · 1064 days ago · 38 km deep · 9 km away
  14. 5.0129 km E of Atka, Alaska · 1064 days ago · 30 km deep · 88 km away · felt by 1
  15. 2.958 km SE of Atka, Alaska · 1063 days ago · 17 km deep · 18 km away
  16. 3.3133 km ESE of Atka, Alaska · 1061 days ago · 35 km deep · 87 km away
  17. 2.678 km SE of Atka, Alaska · 1059 days ago · 35 km deep · 37 km away
  18. 4.264 km E of Atka, Alaska · 1059 days ago · 80 km deep · 30 km away
  19. 2.978 km SSE of Atka, Alaska · 1055 days ago · 35 km deep · 47 km away
  20. 3.236 km S of Atka, Alaska · 1054 days ago · 66 km deep · 43 km away
  21. 2.743 km N of Atka, Alaska · 1053 days ago · 2 km deep · 75 km away
  22. 4.49 km E of Atka, Alaska · 1053 days ago · 80 km deep · 40 km away · felt by 1
  23. 2.830 km N of Atka, Alaska · 1053 days ago · 188 km deep · 71 km away
  24. 2.374 km SSE of Atka, Alaska · 1053 days ago · 18 km deep · 46 km away
  25. 2.862 km ESE of Atka, Alaska · 1051 days ago · 60 km deep · 21 km away
  26. 3.245 km S of Atka, Alaska · 1051 days ago · 69 km deep · 41 km away
  27. 2.347 km ESE of Atka, Alaska · 1051 days ago · 8 km deep · 11 km away
  28. 3.259 km SSE of Atka, Alaska · 1050 days ago · 35 km deep · 29 km away
  29. 2.3Andreanof Islands, Aleutian Islands, Alaska · 1049 days ago · 42 km deep · 28 km away
  30. 3.252 km NNE of Atka, Alaska · 1049 days ago · 161 km deep · 77 km away
  31. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1049 days ago · 3 km deep · 14 km away
  32. 1.935 km ESE of Atka, Alaska · 1049 days ago · 6 km deep · 12 km away
  33. 2.053 km SW of Atka, Alaska · 1048 days ago · 21 km deep · 78 km away
  34. 3.240 km WNW of Atka, Alaska · 1046 days ago · 175 km deep · 87 km away
  35. 2.744 km S of Atka, Alaska · 1045 days ago · 140 km deep · 42 km away
  36. 1.927 km E of Atka, Alaska · 1041 days ago · 13 km deep · 25 km away
  37. 2.746 km ESE of Atka, Alaska · 1041 days ago · 10 km deep · 1 km away
  38. 3.991 km ENE of Atka, Alaska · 1041 days ago · 204 km deep · 74 km away
  39. 1.950 km W of Atka, Alaska · 1040 days ago · 14 km deep · 94 km away
  40. 2.46 km W of Atka, Alaska · 1039 days ago · 137 km deep · 51 km away
  41. 3.529 km ESE of Atka, Alaska · 1039 days ago · 97 km deep · 18 km away
  42. 3.249 km ESE of Atka, Alaska · 1037 days ago · 8 km deep · 3 km away
  43. 1.931 km ESE of Atka, Alaska · 1035 days ago · 6 km deep · 16 km away
  44. 1.818 km WSW of Atka, Alaska · 1034 days ago · 6 km deep · 58 km away
  45. 1.950 km WSW of Atka, Alaska · 1034 days ago · 52 km deep · 82 km away
  46. 2.277 km ESE of Atka, Alaska · 1034 days ago · 45 km deep · 31 km away
  47. 3.182 km SE of Atka, Alaska · 1033 days ago · 35 km deep · 42 km away
  48. 3.264 km E of Atka, Alaska · 1033 days ago · 116 km deep · 44 km away
  49. 2.337 km ENE of Atka, Alaska · 1032 days ago · 13 km deep · 34 km away
  50. 2.230 km SE of Atka, Alaska · 1031 days ago · 80 km deep · 16 km away
  51. 3.570 km E of Atka, Alaska · 1031 days ago · 159 km deep · 39 km away
  52. 3.087 km ESE of Atka, Alaska · 1029 days ago · 35 km deep · 40 km away
  53. 1.870 km SW of Atka, Alaska · 1028 days ago · 43 km deep · 95 km away
  54. 2.947 km S of Atka, Alaska · 1027 days ago · 60 km deep · 44 km away
  55. 3.146 km NNW of Atka, Alaska · 1025 days ago · 206 km deep · 91 km away
  56. 1.932 km ESE of Atka, Alaska · 1025 days ago · 5 km deep · 15 km away
  57. 2.042 km W of Atka, Alaska · 1024 days ago · 14 km deep · 85 km away
  58. 1.934 km ESE of Atka, Alaska · 1024 days ago · 4 km deep · 13 km away
  59. 4.136 km NW of Atka, Alaska · 1024 days ago · 177 km deep · 82 km away
  60. 3.5102 km NE of Atka, Alaska · 1024 days ago · 216 km deep · 99 km away

The first 60 of 73.

Before

  1. 2.431 km ESE of Atka, Alaska · 1071 days ago · 12 km deep · 19 km away
  2. 1.843 km SW of Atka, Alaska · 1072 days ago · 70 km deep · 75 km away
  3. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1073 days ago · 21 km deep · 27 km away
  4. 1.928 km SE of Atka, Alaska · 1073 days ago · 3 km deep · 20 km away
  5. 1.836 km ESE of Atka, Alaska · 1073 days ago · 5 km deep · 10 km away
  6. 1.941 km ESE of Atka, Alaska · 1073 days ago · 1 km deep · 9 km away
  7. 2.151 km SE of Atka, Alaska · 1073 days ago · 24 km deep · 19 km away
  8. 1.936 km ESE of Atka, Alaska · 1075 days ago · 9 km deep · 13 km away
  9. 1.933 km ESE of Atka, Alaska · 1076 days ago · 10 km deep · 17 km away
  10. 4.126 km NNE of Atka, Alaska · 1077 days ago · 119 km deep · 57 km away
  11. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1077 days ago · 10 km deep · 71 km away
  12. 1.952 km SSW of Atka, Alaska · 1077 days ago · 37 km deep · 71 km away
  13. 3.039 km NNW of Atka, Alaska · 1078 days ago · 185 km deep · 84 km away
  14. 3.216 km SSE of Atka, Alaska · 1080 days ago · 83 km deep · 34 km away
  15. 3.236 km N of Atka, Alaska · 1081 days ago · 201 km deep · 76 km away
  16. 3.259 km SE of Atka, Alaska · 1081 days ago · 26 km deep · 12 km away
  17. 1.619 km WNW of Atka, Alaska · 1084 days ago · 6 km deep · 65 km away
  18. 3.856 km ENE of Atka, Alaska · 1084 days ago · 136 km deep · 49 km away
  19. 2.330 km SSW of Atka, Alaska · 1086 days ago · 91 km deep · 53 km away
  20. 3.951 km E of Atka, Alaska · 1087 days ago · 78 km deep · 25 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000lnn8 (also filed as ak023ds6jllp). Read Thu, Oct 1, 2026, 8:47 PM UTC.