Alaska earthquakes

M2.9 earthquake 137 km SE of Adak, Alaska

A magnitude 2.9 earthquake struck 137 km SE of Adak, Alaska on Sat, Aug 5, 2023, 6:51 PM HADT (03:51 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 44 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-08-06 03:51:32 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.892° N, 175.434° 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 · ±0.148 · 6 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
±0.15
Depth from
Operator assigned
Station coverage gap
263°, poorly surrounded by stations
Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 119 in the 60 days after this one and 71 in the 30 days before it.

After

  1. 2.6150 km SSE of Adak, Alaska · 1152 days ago · 10 km deep · 19 km away
  2. 1.851 km SSE of Adak, Alaska · 1151 days ago · 26 km deep · 87 km away
  3. 1.661 km ESE of Adak, Alaska · 1151 days ago · 35 km deep · 83 km away
  4. 2.057 km SE of Adak, Alaska · 1151 days ago · 23 km deep · 81 km away
  5. 2.8Andreanof Islands, Aleutian Islands, Alaska · 1150 days ago · 13 km deep · 93 km away
  6. 2.5156 km S of Atka, Alaska · 1150 days ago · 10 km deep · 59 km away
  7. 2.3192 km S of Adak, Alaska · 1150 days ago · 12 km deep · 99 km away
  8. 3.0124 km SSW of Atka, Alaska · 1149 days ago · 10 km deep · 44 km away
  9. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1149 days ago · 33 km deep · 99 km away
  10. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1148 days ago · 39 km deep · 72 km away
  11. 1.560 km SSE of Adak, Alaska · 1147 days ago · 23 km deep · 78 km away
  12. 1.552 km S of Adak, Alaska · 1147 days ago · 24 km deep · 94 km away
  13. 2.6106 km SE of Adak, Alaska · 1147 days ago · 35 km deep · 34 km away
  14. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1147 days ago · 23 km deep · 64 km away
  15. 1.761 km SE of Adak, Alaska · 1146 days ago · 26 km deep · 76 km away
  16. 1.5110 km SW of Atka, Alaska · 1146 days ago · 13 km deep · 59 km away
  17. 1.568 km SSE of Adak, Alaska · 1146 days ago · 20 km deep · 74 km away
  18. 1.659 km SE of Adak, Alaska · 1146 days ago · 26 km deep · 80 km away
  19. 1.566 km SSE of Adak, Alaska · 1145 days ago · 22 km deep · 80 km away
  20. 3.488 km ESE of Adak, Alaska · 1144 days ago · 35 km deep · 76 km away
  21. 1.591 km SW of Atka, Alaska · 1144 days ago · 32 km deep · 81 km away
  22. 1.559 km SE of Adak, Alaska · 1144 days ago · 25 km deep · 79 km away
  23. 1.995 km S of Atka, Alaska · 1143 days ago · 26 km deep · 89 km away
  24. 2.646 km SSE of Adak, Alaska · 1142 days ago · 37 km deep · 94 km away
  25. 2.175 km ESE of Adak, Alaska · 1142 days ago · 25 km deep · 76 km away
  26. 1.771 km SW of Atka, Alaska · 1141 days ago · 26 km deep · 100 km away
  27. 2.968 km SE of Adak, Alaska · 1141 days ago · 35 km deep · 69 km away
  28. 1.8151 km S of Adak, Alaska · 1140 days ago · 7 km deep · 94 km away
  29. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1140 days ago · 25 km deep · 82 km away
  30. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1140 days ago · 19 km deep · 72 km away
  31. 1.562 km ESE of Adak, Alaska · 1139 days ago · 59 km deep · 94 km away
  32. 1.8133 km S of Atka, Alaska · 1139 days ago · 5 km deep · 89 km away
  33. 3.669 km SE of Adak, Alaska · 1139 days ago · 35 km deep · 72 km away
  34. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1139 days ago · 14 km deep · 68 km away
  35. 1.978 km ESE of Adak, Alaska · 1138 days ago · 26 km deep · 69 km away
  36. 3.7Andreanof Islands, Aleutian Islands, Alaska · 1138 days ago · 35 km deep · 75 km away
  37. 2.899 km ESE of Adak, Alaska · 1138 days ago · 35 km deep · 70 km away
  38. 1.753 km SSE of Adak, Alaska · 1138 days ago · 25 km deep · 87 km away
  39. 2.860 km SE of Adak, Alaska · 1138 days ago · 35 km deep · 78 km away
  40. 2.6175 km S of Adak, Alaska · 1137 days ago · 10 km deep · 98 km away
  41. 1.652 km SE of Adak, Alaska · 1137 days ago · 24 km deep · 85 km away
  42. 1.654 km SSE of Adak, Alaska · 1137 days ago · 29 km deep · 84 km away
  43. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1136 days ago · 16 km deep · 88 km away
  44. 1.862 km SE of Adak, Alaska · 1135 days ago · 26 km deep · 76 km away
  45. 2.1192 km S of Atka, Alaska · 1135 days ago · 10 km deep · 96 km away
  46. 1.548 km S of Adak, Alaska · 1135 days ago · 31 km deep · 98 km away
  47. 1.9146 km SSE of Adak, Alaska · 1135 days ago · 26 km deep · 32 km away
  48. 2.6139 km S of Adak, Alaska · 1135 days ago · 10 km deep · 98 km away
  49. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1134 days ago · 26 km deep · 78 km away
  50. 2.963 km SE of Adak, Alaska · 1134 days ago · 35 km deep · 74 km away
  51. 1.759 km SE of Adak, Alaska · 1134 days ago · 26 km deep · 79 km away
  52. 1.889 km SW of Atka, Alaska · 1134 days ago · 26 km deep · 82 km away
  53. 1.580 km SSE of Adak, Alaska · 1133 days ago · 26 km deep · 67 km away
  54. 1.861 km SSE of Adak, Alaska · 1133 days ago · 15 km deep · 84 km away
  55. 2.587 km SSW of Atka, Alaska · 1132 days ago · 35 km deep · 85 km away
  56. 2.760 km SE of Adak, Alaska · 1132 days ago · 35 km deep · 78 km away
  57. 1.883 km ESE of Adak, Alaska · 1131 days ago · 24 km deep · 80 km away
  58. 1.848 km SE of Adak, Alaska · 1131 days ago · 24 km deep · 89 km away
  59. 2.858 km SE of Adak, Alaska · 1131 days ago · 35 km deep · 81 km away
  60. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1131 days ago · 10 km deep · 53 km away

The first 60 of 119.

Before

  1. 1.738 km SSE of Adak, Alaska · 1152 days ago · 34 km deep · 100 km away
  2. 1.859 km SE of Adak, Alaska · 1153 days ago · 22 km deep · 79 km away
  3. 2.566 km SE of Adak, Alaska · 1154 days ago · 35 km deep · 77 km away
  4. 1.960 km S of Adak, Alaska · 1154 days ago · 22 km deep · 97 km away
  5. 2.187 km SW of Atka, Alaska · 1154 days ago · 26 km deep · 84 km away
  6. 1.869 km SE of Adak, Alaska · 1155 days ago · 22 km deep · 68 km away
  7. 3.285 km SSE of Adak, Alaska · 1156 days ago · 10 km deep · 66 km away
  8. 3.183 km SSE of Adak, Alaska · 1156 days ago · 35 km deep · 67 km away
  9. 2.980 km SSE of Adak, Alaska · 1156 days ago · 35 km deep · 67 km away
  10. 1.768 km SSE of Adak, Alaska · 1157 days ago · 19 km deep · 78 km away
  11. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1157 days ago · 35 km deep · 67 km away
  12. 3.470 km SSE of Adak, Alaska · 1157 days ago · 35 km deep · 77 km away
  13. 3.375 km SSE of Adak, Alaska · 1157 days ago · 35 km deep · 74 km away
  14. 3.176 km SSE of Adak, Alaska · 1157 days ago · 20 km deep · 73 km away
  15. 1.660 km SE of Adak, Alaska · 1158 days ago · 26 km deep · 79 km away
  16. 1.971 km ESE of Adak, Alaska · 1159 days ago · 32 km deep · 81 km away
  17. 1.558 km SSE of Adak, Alaska · 1160 days ago · 23 km deep · 79 km away
  18. 1.759 km SSE of Adak, Alaska · 1160 days ago · 13 km deep · 88 km away
  19. 1.563 km SE of Adak, Alaska · 1161 days ago · 22 km deep · 74 km away
  20. 2.7188 km SSW of Atka, Alaska · 1161 days ago · 10 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kpc3 (also filed as ak023a0l8yix). Read Thu, Oct 1, 2026, 2:36 AM UTC.