Alaska earthquakes

M3.0 earthquake 71 km WSW of Adak, Alaska

A magnitude 3.0 earthquake struck 71 km WSW of Adak, Alaska on Mon, Aug 7, 2023, 2:34 AM HADT (11:34 UTC), 33 km (21 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-08-07 11:34:39 UTC
Depth
33.3 km (20.7 mi), shallow
Epicenter
51.559° N, 177.534° 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 · ±0.097 · 14 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 4.4 km horizontally, 10.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
203°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 154 in the 30 days before it.

After

  1. 3.7126 km WSW of Adak, Alaska · 1151 days ago · 42 km deep · 55 km away
  2. 2.0134 km WSW of Adak, Alaska · 1150 days ago · 12 km deep · 66 km away
  3. 1.6104 km WSW of Adak, Alaska · 1150 days ago · 38 km deep · 33 km away
  4. 1.652 km WSW of Adak, Alaska · 1150 days ago · 67 km deep · 20 km away
  5. 2.0150 km W of Adak, Alaska · 1150 days ago · 88 km deep · 89 km away
  6. 2.0122 km W of Adak, Alaska · 1150 days ago · 86 km deep · 70 km away
  7. 1.8127 km WSW of Adak, Alaska · 1150 days ago · 9 km deep · 61 km away
  8. 1.959 km SSW of Adak, Alaska · 1149 days ago · 45 km deep · 35 km away
  9. 1.6101 km W of Adak, Alaska · 1149 days ago · 5 km deep · 52 km away
  10. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1149 days ago · 24 km deep · 71 km away
  11. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1149 days ago · 33 km deep · 80 km away
  12. 1.9164 km WSW of Adak, Alaska · 1148 days ago · 17 km deep · 95 km away
  13. 1.664 km SSW of Adak, Alaska · 1148 days ago · 37 km deep · 40 km away
  14. 1.6112 km WSW of Adak, Alaska · 1148 days ago · 12 km deep · 41 km away
  15. 3.560 km S of Adak, Alaska · 1147 days ago · 35 km deep · 56 km away
  16. 1.560 km SSE of Adak, Alaska · 1147 days ago · 23 km deep · 94 km away
  17. 1.552 km S of Adak, Alaska · 1147 days ago · 24 km deep · 74 km away
  18. 2.812 km S of Adak, Alaska · 1147 days ago · 13 km deep · 68 km away
  19. 3.1Andreanof Islands, Aleutian Islands, Alaska · 1147 days ago · 10 km deep · 77 km away
  20. 1.5128 km WSW of Adak, Alaska · 1147 days ago · 27 km deep · 58 km away
  21. 1.6131 km WSW of Adak, Alaska · 1146 days ago · 26 km deep · 60 km away
  22. 1.6132 km W of Adak, Alaska · 1146 days ago · 20 km deep · 75 km away
  23. 1.761 km SE of Adak, Alaska · 1146 days ago · 26 km deep · 98 km away
  24. 2.0118 km SW of Adak, Alaska · 1146 days ago · 18 km deep · 51 km away
  25. 3.4134 km W of Adak, Alaska · 1146 days ago · 94 km deep · 72 km away
  26. 1.568 km SSE of Adak, Alaska · 1146 days ago · 20 km deep · 91 km away
  27. 2.755 km SW of Adak, Alaska · 1146 days ago · 35 km deep · 21 km away
  28. 1.647 km SSW of Adak, Alaska · 1146 days ago · 37 km deep · 48 km away
  29. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1145 days ago · 13 km deep · 32 km away
  30. 1.544 km SSW of Adak, Alaska · 1145 days ago · 40 km deep · 51 km away
  31. 1.566 km SSE of Adak, Alaska · 1145 days ago · 22 km deep · 86 km away
  32. 1.563 km SSW of Adak, Alaska · 1145 days ago · 43 km deep · 42 km away
  33. 1.7115 km SW of Adak, Alaska · 1145 days ago · 23 km deep · 48 km away
  34. 1.7106 km WSW of Adak, Alaska · 1145 days ago · 13 km deep · 35 km away
  35. 1.579 km SW of Adak, Alaska · 1145 days ago · 28 km deep · 14 km away
  36. 1.673 km SSW of Adak, Alaska · 1145 days ago · 26 km deep · 42 km away
  37. 1.6150 km WSW of Adak, Alaska · 1145 days ago · 25 km deep · 80 km away
  38. 1.614 km E of Adak, Alaska · 1144 days ago · 113 km deep · 84 km away
  39. 1.5123 km WSW of Adak, Alaska · 1144 days ago · 17 km deep · 52 km away
  40. 1.8119 km W of Adak, Alaska · 1144 days ago · 87 km deep · 74 km away
  41. 1.9159 km SW of Adak, Alaska · 1144 days ago · 18 km deep · 88 km away
  42. 1.588 km SW of Adak, Alaska · 1143 days ago · 30 km deep · 20 km away
  43. 1.663 km WSW of Adak, Alaska · 1143 days ago · 73 km deep · 15 km away
  44. 4.7149 km SW of Adak, Alaska · 1142 days ago · 10 km deep · 84 km away
  45. 1.9133 km SW of Adak, Alaska · 1142 days ago · 26 km deep · 65 km away
  46. 2.9141 km SW of Adak, Alaska · 1142 days ago · 26 km deep · 72 km away
  47. 1.7144 km SW of Adak, Alaska · 1142 days ago · 18 km deep · 77 km away
  48. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1142 days ago · 25 km deep · 92 km away
  49. 2.0143 km SW of Adak, Alaska · 1142 days ago · 17 km deep · 76 km away
  50. 1.6143 km SW of Adak, Alaska · 1142 days ago · 5 km deep · 81 km away
  51. 1.6139 km SW of Adak, Alaska · 1142 days ago · 17 km deep · 74 km away
  52. 2.9142 km SW of Adak, Alaska · 1142 days ago · 17 km deep · 75 km away
  53. 2.646 km SSE of Adak, Alaska · 1142 days ago · 37 km deep · 79 km away
  54. 3.176 km SW of Adak, Alaska · 1142 days ago · 35 km deep · 17 km away
  55. 1.966 km SSW of Adak, Alaska · 1142 days ago · 40 km deep · 45 km away
  56. 1.9141 km SW of Adak, Alaska · 1142 days ago · 11 km deep · 73 km away
  57. 1.5118 km WSW of Adak, Alaska · 1142 days ago · 14 km deep · 48 km away
  58. 1.5119 km SW of Adak, Alaska · 1141 days ago · 25 km deep · 51 km away
  59. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1140 days ago · 25 km deep · 89 km away
  60. 1.7132 km WSW of Adak, Alaska · 1140 days ago · 71 km deep · 68 km away

The first 60 of at least 199.

Before

  1. 1.851 km SSE of Adak, Alaska · 1151 days ago · 26 km deep · 88 km away
  2. 1.634 km SSE of Adak, Alaska · 1151 days ago · 41 km deep · 75 km away
  3. 3.182 km SW of Adak, Alaska · 1152 days ago · 65 km deep · 13 km away
  4. 2.763 km SW of Adak, Alaska · 1152 days ago · 33 km deep · 16 km away
  5. 1.738 km SSE of Adak, Alaska · 1152 days ago · 34 km deep · 79 km away
  6. 2.0113 km WSW of Adak, Alaska · 1152 days ago · 12 km deep · 44 km away
  7. 2.1123 km SW of Adak, Alaska · 1153 days ago · 22 km deep · 55 km away
  8. 2.9145 km WSW of Adak, Alaska · 1153 days ago · 35 km deep · 74 km away
  9. 1.960 km S of Adak, Alaska · 1154 days ago · 22 km deep · 67 km away
  10. 2.244 km NNW of Adak, Alaska · 1154 days ago · 137 km deep · 89 km away
  11. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1155 days ago · 35 km deep · 50 km away
  12. 2.895 km WSW of Adak, Alaska · 1155 days ago · 106 km deep · 35 km away
  13. 3.3155 km WSW of Adak, Alaska · 1155 days ago · 31 km deep · 84 km away
  14. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1155 days ago · 54 km deep · 12 km away
  15. 3.285 km SSE of Adak, Alaska · 1156 days ago · 10 km deep · 98 km away
  16. 2.084 km WSW of Adak, Alaska · 1156 days ago · 29 km deep · 14 km away
  17. 1.887 km SW of Adak, Alaska · 1156 days ago · 51 km deep · 25 km away
  18. 3.183 km SSE of Adak, Alaska · 1156 days ago · 35 km deep · 97 km away
  19. 1.996 km SW of Adak, Alaska · 1156 days ago · 32 km deep · 28 km away
  20. 2.980 km SSE of Adak, Alaska · 1156 days ago · 35 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kpdb (also filed as ak023a2dg4zp). Read Thu, Oct 1, 2026, 3:39 AM UTC.