Alaska earthquakes

M3.5 earthquake 69 km WSW of Adak, Alaska

A magnitude 3.5 earthquake struck 69 km WSW of Adak, Alaska on Fri, Dec 29, 2023, 1:41 AM HAST (11:41 UTC), 55 km (34 mi) below the surface.

A larger quake followed: M4.1 11 km SSE of Adak, 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
3.5 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-12-29 11:41:15 UTC
Depth
55.0 km (34.2 mi), shallow
Epicenter
51.553° N, 177.502° 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
3.5ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.081 · 20 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 7.5 km horizontally, 13.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
195°, poorly surrounded by stations
Stations used
25

Nearby

Within 100 km, magnitude 1.5 and up: 148 in the 60 days after this one and 142 in the 30 days before it.

After

  1. 2.193 km SW of Adak, Alaska · 1007 days ago · 31 km deep · 28 km away
  2. 2.690 km SW of Adak, Alaska · 1007 days ago · 35 km deep · 28 km away
  3. 2.2153 km WSW of Adak, Alaska · 1006 days ago · 18 km deep · 86 km away
  4. 2.039 km S of Adak, Alaska · 1005 days ago · 42 km deep · 58 km away
  5. 2.161 km WSW of Adak, Alaska · 1005 days ago · 69 km deep · 11 km away
  6. 3.0119 km WSW of Adak, Alaska · 1005 days ago · 57 km deep · 50 km away
  7. 2.4135 km WSW of Adak, Alaska · 1005 days ago · 78 km deep · 72 km away
  8. 2.052 km S of Adak, Alaska · 1005 days ago · 31 km deep · 62 km away
  9. 1.933 km SSW of Adak, Alaska · 1004 days ago · 53 km deep · 52 km away
  10. 1.950 km WSW of Adak, Alaska · 1004 days ago · 68 km deep · 20 km away
  11. 2.2137 km SSW of Adak, Alaska · 1003 days ago · 25 km deep · 82 km away
  12. 2.8135 km SSW of Adak, Alaska · 1003 days ago · 28 km deep · 80 km away
  13. 2.916 km NE of Adak, Alaska · 1003 days ago · 95 km deep · 85 km away
  14. 3.079 km SW of Adak, Alaska · 1003 days ago · 32 km deep · 16 km away
  15. 3.764 km W of Adak, Alaska · 996 days ago · 72 km deep · 33 km away
  16. 3.651 km SSW of Adak, Alaska · 991 days ago · 35 km deep · 46 km away
  17. 4.111 km SSE of Adak, Alaska · 989 days ago · 70 km deep · 71 km away · felt by 1
  18. 3.433 km SSE of Adak, Alaska · 988 days ago · 35 km deep · 74 km away
  19. 3.965 km NNW of Adak, Alaska · 982 days ago · 9 km deep · 100 km away
  20. 2.995 km SW of Adak, Alaska · 977 days ago · 35 km deep · 27 km away
  21. 1.8126 km WSW of Adak, Alaska · 976 days ago · 25 km deep · 57 km away
  22. 2.068 km SW of Adak, Alaska · 976 days ago · 33 km deep · 6 km away
  23. 4.0103 km SW of Adak, Alaska · 976 days ago · 53 km deep · 35 km away
  24. 1.8127 km WSW of Adak, Alaska · 976 days ago · 14 km deep · 63 km away
  25. 1.8127 km WSW of Adak, Alaska · 976 days ago · 14 km deep · 64 km away
  26. 2.673 km SW of Adak, Alaska · 975 days ago · 35 km deep · 25 km away
  27. 2.2158 km WSW of Adak, Alaska · 975 days ago · 25 km deep · 89 km away
  28. 1.753 km SSE of Adak, Alaska · 975 days ago · 17 km deep · 79 km away
  29. 2.6147 km WSW of Adak, Alaska · 975 days ago · 19 km deep · 79 km away
  30. 1.9146 km WSW of Adak, Alaska · 975 days ago · 16 km deep · 79 km away
  31. 1.7106 km WSW of Adak, Alaska · 975 days ago · 28 km deep · 37 km away
  32. 1.9144 km WSW of Adak, Alaska · 975 days ago · 11 km deep · 77 km away
  33. 2.1122 km WSW of Adak, Alaska · 975 days ago · 28 km deep · 53 km away
  34. 2.0119 km SW of Adak, Alaska · 975 days ago · 38 km deep · 50 km away
  35. 1.9144 km WSW of Adak, Alaska · 974 days ago · 16 km deep · 78 km away
  36. 1.653 km SSE of Adak, Alaska · 974 days ago · 19 km deep · 74 km away
  37. 2.1157 km WSW of Adak, Alaska · 974 days ago · 30 km deep · 87 km away
  38. 1.9123 km SW of Adak, Alaska · 974 days ago · 24 km deep · 55 km away
  39. 1.737 km WNW of Adak, Alaska · 974 days ago · 4 km deep · 52 km away
  40. 3.3136 km WSW of Adak, Alaska · 974 days ago · 35 km deep · 67 km away
  41. 1.879 km SW of Adak, Alaska · 974 days ago · 31 km deep · 23 km away
  42. 1.535 km W of Adak, Alaska · 974 days ago · -2 km deep · 49 km away
  43. 1.843 km SE of Adak, Alaska · 974 days ago · 42 km deep · 89 km away
  44. 1.883 km SW of Adak, Alaska · 973 days ago · 25 km deep · 15 km away
  45. 1.846 km SSW of Adak, Alaska · 973 days ago · 40 km deep · 49 km away
  46. 2.0131 km WSW of Adak, Alaska · 973 days ago · 24 km deep · 61 km away
  47. 2.3133 km W of Adak, Alaska · 973 days ago · 92 km deep · 78 km away
  48. 2.4119 km W of Adak, Alaska · 973 days ago · 104 km deep · 67 km away
  49. 2.9162 km WSW of Adak, Alaska · 973 days ago · 35 km deep · 92 km away
  50. 1.962 km SSE of Adak, Alaska · 972 days ago · 3 km deep · 78 km away
  51. 2.7127 km WSW of Adak, Alaska · 972 days ago · 10 km deep · 63 km away
  52. 2.1119 km WSW of Adak, Alaska · 971 days ago · 26 km deep · 52 km away
  53. 2.1136 km WSW of Adak, Alaska · 971 days ago · 21 km deep · 67 km away
  54. 1.922 km SSE of Adak, Alaska · 971 days ago · 62 km deep · 69 km away
  55. 2.059 km SE of Adak, Alaska · 971 days ago · 22 km deep · 96 km away
  56. 2.082 km W of Adak, Alaska · 971 days ago · 7 km deep · 40 km away
  57. 1.950 km SW of Adak, Alaska · 971 days ago · 42 km deep · 30 km away
  58. 2.7126 km WSW of Adak, Alaska · 971 days ago · 37 km deep · 57 km away
  59. 2.283 km SW of Adak, Alaska · 970 days ago · 38 km deep · 26 km away
  60. 1.963 km SSW of Adak, Alaska · 970 days ago · 36 km deep · 41 km away

The first 60 of 148.

Before

  1. 1.860 km SSE of Adak, Alaska · 1007 days ago · 23 km deep · 94 km away
  2. 2.060 km SSE of Adak, Alaska · 1007 days ago · 23 km deep · 94 km away
  3. 2.8125 km WSW of Adak, Alaska · 1007 days ago · 35 km deep · 55 km away
  4. 2.0124 km WSW of Adak, Alaska · 1008 days ago · 25 km deep · 56 km away
  5. 2.113 km SSW of Adak, Alaska · 1008 days ago · 73 km deep · 59 km away
  6. 1.869 km SW of Adak, Alaska · 1008 days ago · 33 km deep · 4 km away
  7. 2.064 km SSW of Adak, Alaska · 1008 days ago · 46 km deep · 35 km away
  8. 3.2167 km WSW of Adak, Alaska · 1008 days ago · 26 km deep · 99 km away
  9. 2.2120 km SW of Adak, Alaska · 1009 days ago · 23 km deep · 51 km away
  10. 2.188 km WSW of Adak, Alaska · 1010 days ago · 50 km deep · 19 km away
  11. 2.3134 km WSW of Adak, Alaska · 1010 days ago · 25 km deep · 65 km away
  12. 2.7158 km WSW of Adak, Alaska · 1010 days ago · 33 km deep · 89 km away
  13. 1.760 km W of Adak, Alaska · 1010 days ago · 2 km deep · 25 km away
  14. 1.659 km W of Adak, Alaska · 1011 days ago · 13 km deep · 29 km away
  15. 3.072 km SSW of Adak, Alaska · 1011 days ago · 35 km deep · 44 km away
  16. 1.860 km SE of Adak, Alaska · 1011 days ago · 26 km deep · 98 km away
  17. 2.0118 km WSW of Adak, Alaska · 1011 days ago · 21 km deep · 50 km away
  18. 1.937 km WNW of Adak, Alaska · 1011 days ago · 0 km deep · 59 km away
  19. 1.541 km SW of Adak, Alaska · 1011 days ago · 50 km deep · 30 km away
  20. 1.9132 km SW of Adak, Alaska · 1011 days ago · 21 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000m4kk (also filed as ak023goivkd1). Read Thu, Oct 1, 2026, 6:55 AM UTC.