Alaska earthquakes

M2.5 earthquake 69 km SSE of Adak, Alaska

A magnitude 2.5 earthquake struck 69 km SSE of Adak, Alaska on Tue, Aug 5, 2025, 6:07 AM HADT (15:07 UTC), 34 km (21 mi) below the surface.

A larger quake followed: M4.0 32 km NNE 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
2.5 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-05 15:07:33 UTC
Depth
34.4 km (21.4 mi), shallow
Epicenter
51.271° N, 176.350° 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
2.5ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.105 · 12 stations
2.0ML, 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 4.7 km horizontally, 14.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
218°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 121 in the 60 days after this one and 135 in the 30 days before it.

After

  1. 1.961 km SE of Adak, Alaska · 423 days ago · 26 km deep · 24 km away
  2. 1.7114 km SW of Adak, Alaska · 423 days ago · 13 km deep · 95 km away
  3. 1.8100 km SSE of Adak, Alaska · 422 days ago · 5 km deep · 31 km away
  4. 3.0100 km SW of Adak, Alaska · 421 days ago · 35 km deep · 93 km away
  5. 1.854 km SSE of Adak, Alaska · 421 days ago · 26 km deep · 22 km away
  6. 1.962 km SE of Adak, Alaska · 421 days ago · 26 km deep · 35 km away
  7. 2.690 km SSE of Adak, Alaska · 421 days ago · 10 km deep · 24 km away
  8. 2.068 km SSW of Adak, Alaska · 421 days ago · 28 km deep · 49 km away
  9. 2.793 km SW of Atka, Alaska · 421 days ago · 35 km deep · 90 km away
  10. 1.647 km SSW of Adak, Alaska · 420 days ago · 29 km deep · 54 km away
  11. 1.961 km SE of Adak, Alaska · 420 days ago · 23 km deep · 24 km away
  12. 1.978 km SW of Adak, Alaska · 420 days ago · 39 km deep · 86 km away
  13. 2.270 km SW of Adak, Alaska · 420 days ago · 37 km deep · 62 km away
  14. 2.673 km SSW of Adak, Alaska · 420 days ago · 35 km deep · 50 km away
  15. 3.155 km SSE of Adak, Alaska · 420 days ago · 35 km deep · 14 km away
  16. 1.813 km SW of Adak, Alaska · 419 days ago · 76 km deep · 67 km away
  17. 1.965 km SSW of Adak, Alaska · 419 days ago · 13 km deep · 46 km away
  18. 2.576 km SW of Adak, Alaska · 419 days ago · 46 km deep · 81 km away
  19. 1.735 km ENE of Adak, Alaska · 418 days ago · 107 km deep · 87 km away
  20. 1.740 km SSE of Adak, Alaska · 418 days ago · 31 km deep · 31 km away
  21. 1.955 km SE of Adak, Alaska · 418 days ago · 26 km deep · 28 km away
  22. 1.513 km SSE of Adak, Alaska · 418 days ago · 81 km deep · 56 km away
  23. 2.5106 km SSW of Adak, Alaska · 418 days ago · 10 km deep · 69 km away
  24. 3.752 km SSE of Adak, Alaska · 417 days ago · 35 km deep · 21 km away
  25. 2.694 km SW of Atka, Alaska · 417 days ago · 35 km deep · 88 km away
  26. 2.068 km SE of Adak, Alaska · 416 days ago · 38 km deep · 44 km away
  27. 1.874 km SSE of Adak, Alaska · 416 days ago · 13 km deep · 15 km away
  28. 1.955 km SSE of Adak, Alaska · 416 days ago · 27 km deep · 17 km away
  29. 1.718 km E of Adak, Alaska · 415 days ago · 90 km deep · 64 km away
  30. 1.663 km SE of Adak, Alaska · 415 days ago · 25 km deep · 35 km away
  31. 1.974 km SSE of Adak, Alaska · 415 days ago · 25 km deep · 4 km away
  32. 1.556 km SSW of Adak, Alaska · 414 days ago · 32 km deep · 53 km away
  33. 1.765 km ESE of Adak, Alaska · 414 days ago · 23 km deep · 49 km away
  34. 1.562 km SE of Adak, Alaska · 414 days ago · 26 km deep · 29 km away
  35. 1.946 km NE of Adak, Alaska · 414 days ago · 126 km deep · 100 km away
  36. 2.716 km SSE of Adak, Alaska · 414 days ago · 16 km deep · 53 km away
  37. 3.371 km SSW of Adak, Alaska · 413 days ago · 35 km deep · 47 km away
  38. 2.252 km SSE of Adak, Alaska · 412 days ago · 26 km deep · 18 km away
  39. 1.659 km SSE of Adak, Alaska · 412 days ago · 26 km deep · 22 km away
  40. 3.716 km SE of Adak, Alaska · 412 days ago · 100 km deep · 58 km away
  41. 2.948 km ESE of Adak, Alaska · 412 days ago · 63 km deep · 53 km away
  42. 1.779 km SW of Adak, Alaska · 411 days ago · 24 km deep · 89 km away
  43. 1.665 km WSW of Adak, Alaska · 411 days ago · 69 km deep · 94 km away
  44. 2.089 km SSE of Adak, Alaska · 410 days ago · 7 km deep · 20 km away
  45. 1.564 km SSW of Adak, Alaska · 410 days ago · 21 km deep · 39 km away
  46. 3.154 km SE of Adak, Alaska · 410 days ago · 35 km deep · 26 km away
  47. 1.862 km SE of Adak, Alaska · 409 days ago · 26 km deep · 37 km away
  48. 1.783 km SW of Adak, Alaska · 409 days ago · 39 km deep · 90 km away
  49. 1.663 km SE of Adak, Alaska · 409 days ago · 26 km deep · 23 km away
  50. 2.562 km SSW of Adak, Alaska · 409 days ago · 43 km deep · 53 km away
  51. 1.563 km SE of Adak, Alaska · 409 days ago · 26 km deep · 37 km away
  52. 2.798 km ESE of Adak, Alaska · 409 days ago · 35 km deep · 83 km away
  53. 1.853 km SSE of Adak, Alaska · 409 days ago · 24 km deep · 18 km away
  54. 3.164 km SE of Adak, Alaska · 409 days ago · 35 km deep · 32 km away
  55. 1.960 km SE of Adak, Alaska · 408 days ago · 23 km deep · 33 km away
  56. 1.854 km S of Adak, Alaska · 408 days ago · 26 km deep · 17 km away
  57. 1.799 km SW of Atka, Alaska · 408 days ago · 26 km deep · 86 km away
  58. 1.569 km SSW of Adak, Alaska · 408 days ago · 26 km deep · 42 km away
  59. 3.468 km SW of Adak, Alaska · 408 days ago · 60 km deep · 73 km away
  60. 2.858 km WSW of Adak, Alaska · 406 days ago · 10 km deep · 87 km away

The first 60 of 121.

Before

  1. 1.649 km WSW of Adak, Alaska · 423 days ago · 77 km deep · 84 km away
  2. 1.691 km ESE of Adak, Alaska · 423 days ago · 26 km deep · 67 km away
  3. 2.093 km SE of Adak, Alaska · 423 days ago · 25 km deep · 51 km away
  4. 1.612 km NE of Adak, Alaska · 423 days ago · 84 km deep · 77 km away
  5. 2.0100 km SE of Adak, Alaska · 423 days ago · 9 km deep · 57 km away
  6. 2.550 km SE of Adak, Alaska · 423 days ago · 35 km deep · 36 km away
  7. 1.9124 km SE of Adak, Alaska · 423 days ago · 1 km deep · 63 km away
  8. 1.654 km SSW of Adak, Alaska · 424 days ago · 33 km deep · 36 km away
  9. 1.791 km SW of Adak, Alaska · 424 days ago · 31 km deep · 89 km away
  10. 1.660 km SSW of Adak, Alaska · 424 days ago · 31 km deep · 50 km away
  11. 1.653 km S of Adak, Alaska · 424 days ago · 22 km deep · 19 km away
  12. 2.7159 km SSE of Adak, Alaska · 424 days ago · 10 km deep · 89 km away
  13. 2.577 km SW of Adak, Alaska · 424 days ago · 35 km deep · 79 km away
  14. 2.795 km SSW of Atka, Alaska · 425 days ago · 35 km deep · 99 km away
  15. 2.658 km ESE of Adak, Alaska · 425 days ago · 44 km deep · 46 km away
  16. 1.963 km SE of Adak, Alaska · 425 days ago · 24 km deep · 40 km away
  17. 3.375 km SSE of Adak, Alaska · 425 days ago · 35 km deep · 6 km away
  18. 3.293 km SSE of Adak, Alaska · 426 days ago · 10 km deep · 23 km away
  19. 2.042 km S of Adak, Alaska · 427 days ago · 26 km deep · 35 km away
  20. 2.672 km ESE of Adak, Alaska · 427 days ago · 35 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000reqe (also filed as ak0259z4ldth). Read Fri, Oct 2, 2026, 8:56 AM UTC.