Alaska earthquakes

M2.5 earthquake 62 km SSW of Adak, Alaska

A magnitude 2.5 earthquake struck 62 km SSW of Adak, Alaska on Wed, Jul 23, 2025, 6:27 PM HADT (03:27 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.5 122 km SW 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
2025-07-24 03:27:56 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.328° N, 176.838° 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 · ±0.091 · 16 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 2.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
211°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 189 in the 60 days after this one and 142 in the 30 days before it.

After

  1. 1.667 km S of Adak, Alaska · 436 days ago · 22 km deep · 19 km away
  2. 2.046 km SW of Adak, Alaska · 436 days ago · 26 km deep · 32 km away
  3. 2.174 km SE of Adak, Alaska · 435 days ago · 22 km deep · 74 km away
  4. 1.872 km WSW of Adak, Alaska · 435 days ago · 74 km deep · 53 km away
  5. 2.574 km SSE of Adak, Alaska · 435 days ago · 35 km deep · 40 km away
  6. 1.8100 km SW of Adak, Alaska · 434 days ago · 27 km deep · 54 km away
  7. 1.653 km W of Adak, Alaska · 434 days ago · 130 km deep · 80 km away
  8. 1.683 km SW of Adak, Alaska · 433 days ago · 32 km deep · 56 km away
  9. 1.9124 km WSW of Adak, Alaska · 433 days ago · 25 km deep · 97 km away
  10. 1.942 km NE of Adak, Alaska · 433 days ago · 123 km deep · 98 km away
  11. 3.957 km S of Adak, Alaska · 433 days ago · 35 km deep · 12 km away
  12. 1.9112 km WSW of Adak, Alaska · 433 days ago · 5 km deep · 91 km away
  13. 4.083 km W of Adak, Alaska · 433 days ago · 84 km deep · 83 km away
  14. 1.634 km SSE of Adak, Alaska · 432 days ago · 51 km deep · 37 km away
  15. 1.969 km SSE of Adak, Alaska · 432 days ago · 25 km deep · 34 km away
  16. 1.968 km SSE of Adak, Alaska · 432 days ago · 20 km deep · 33 km away
  17. 2.567 km SSE of Adak, Alaska · 432 days ago · 35 km deep · 32 km away
  18. 1.764 km SSE of Adak, Alaska · 431 days ago · 33 km deep · 49 km away
  19. 1.56 km NE of Adak, Alaska · 431 days ago · 8 km deep · 68 km away
  20. 1.583 km WSW of Adak, Alaska · 431 days ago · 67 km deep · 75 km away
  21. 3.865 km SW of Adak, Alaska · 431 days ago · 38 km deep · 28 km away
  22. 2.558 km SW of Adak, Alaska · 430 days ago · 46 km deep · 34 km away
  23. 2.981 km SW of Adak, Alaska · 430 days ago · 47 km deep · 36 km away
  24. 3.182 km SW of Adak, Alaska · 430 days ago · 35 km deep · 36 km away
  25. 3.190 km WSW of Adak, Alaska · 430 days ago · 41 km deep · 65 km away
  26. 1.75 km N of Adak, Alaska · 429 days ago · 7 km deep · 67 km away
  27. 2.0119 km SW of Adak, Alaska · 429 days ago · 27 km deep · 80 km away
  28. 2.7112 km SSW of Adak, Alaska · 429 days ago · 21 km deep · 57 km away
  29. 2.565 km SSE of Adak, Alaska · 429 days ago · 35 km deep · 28 km away
  30. 3.0118 km SSW of Adak, Alaska · 429 days ago · 10 km deep · 61 km away
  31. 1.968 km SSE of Adak, Alaska · 428 days ago · 21 km deep · 34 km away
  32. 1.656 km SSE of Adak, Alaska · 428 days ago · 24 km deep · 48 km away
  33. 1.813 km W of Adak, Alaska · 428 days ago · -2 km deep · 59 km away
  34. 3.295 km SW of Adak, Alaska · 427 days ago · 35 km deep · 54 km away
  35. 2.672 km ESE of Adak, Alaska · 427 days ago · 35 km deep · 84 km away
  36. 2.042 km S of Adak, Alaska · 427 days ago · 26 km deep · 21 km away
  37. 3.1112 km SW of Adak, Alaska · 427 days ago · 35 km deep · 79 km away
  38. 3.293 km SSE of Adak, Alaska · 426 days ago · 10 km deep · 50 km away
  39. 2.0121 km WSW of Adak, Alaska · 426 days ago · 28 km deep · 95 km away
  40. 3.375 km SSE of Adak, Alaska · 426 days ago · 35 km deep · 38 km away
  41. 1.963 km SE of Adak, Alaska · 426 days ago · 24 km deep · 67 km away
  42. 2.658 km ESE of Adak, Alaska · 425 days ago · 44 km deep · 69 km away
  43. 2.577 km SW of Adak, Alaska · 425 days ago · 35 km deep · 44 km away
  44. 1.653 km S of Adak, Alaska · 425 days ago · 22 km deep · 22 km away
  45. 1.660 km SSW of Adak, Alaska · 424 days ago · 31 km deep · 16 km away
  46. 1.791 km SW of Adak, Alaska · 424 days ago · 31 km deep · 54 km away
  47. 1.654 km SSW of Adak, Alaska · 424 days ago · 33 km deep · 8 km away
  48. 1.9124 km SE of Adak, Alaska · 424 days ago · 1 km deep · 97 km away
  49. 2.550 km SE of Adak, Alaska · 424 days ago · 35 km deep · 57 km away
  50. 1.9105 km WSW of Adak, Alaska · 424 days ago · 44 km deep · 81 km away
  51. 2.0100 km SE of Adak, Alaska · 424 days ago · 9 km deep · 91 km away
  52. 1.612 km NE of Adak, Alaska · 424 days ago · 84 km deep · 73 km away
  53. 2.093 km SE of Adak, Alaska · 424 days ago · 25 km deep · 85 km away
  54. 1.691 km ESE of Adak, Alaska · 424 days ago · 26 km deep · 98 km away
  55. 4.854 km W of Adak, Alaska · 423 days ago · 87 km deep · 73 km away · felt by 4
  56. 1.649 km WSW of Adak, Alaska · 423 days ago · 77 km deep · 56 km away
  57. 2.569 km SSE of Adak, Alaska · 423 days ago · 34 km deep · 34 km away
  58. 3.198 km WSW of Adak, Alaska · 423 days ago · 58 km deep · 73 km away
  59. 1.961 km SE of Adak, Alaska · 423 days ago · 26 km deep · 51 km away
  60. 1.7114 km SW of Adak, Alaska · 423 days ago · 13 km deep · 64 km away

The first 60 of 189.

Before

  1. 1.753 km S of Adak, Alaska · 436 days ago · 14 km deep · 17 km away
  2. 1.7112 km WSW of Adak, Alaska · 437 days ago · 45 km deep · 82 km away
  3. 1.6125 km WSW of Adak, Alaska · 437 days ago · 27 km deep · 96 km away
  4. 1.7111 km WSW of Adak, Alaska · 437 days ago · 13 km deep · 94 km away
  5. 1.793 km SW of Adak, Alaska · 438 days ago · 27 km deep · 65 km away
  6. 1.640 km SSE of Adak, Alaska · 438 days ago · 37 km deep · 41 km away
  7. 3.435 km S of Adak, Alaska · 438 days ago · 17 km deep · 33 km away
  8. 1.653 km S of Adak, Alaska · 439 days ago · 31 km deep · 15 km away
  9. 1.659 km SSE of Adak, Alaska · 439 days ago · 24 km deep · 48 km away
  10. 2.845 km SE of Adak, Alaska · 439 days ago · 48 km deep · 52 km away
  11. 3.848 km S of Adak, Alaska · 439 days ago · 40 km deep · 15 km away · felt by 1
  12. 2.586 km SW of Adak, Alaska · 439 days ago · 35 km deep · 42 km away
  13. 1.9119 km WSW of Adak, Alaska · 440 days ago · 13 km deep · 96 km away
  14. 1.891 km SW of Adak, Alaska · 440 days ago · 27 km deep · 62 km away
  15. 1.891 km SW of Adak, Alaska · 440 days ago · 27 km deep · 61 km away
  16. 1.654 km WSW of Adak, Alaska · 440 days ago · 24 km deep · 45 km away
  17. 3.086 km ESE of Adak, Alaska · 440 days ago · 35 km deep · 91 km away
  18. 2.1117 km SW of Adak, Alaska · 441 days ago · 25 km deep · 79 km away
  19. 2.69 km SSW of Adak, Alaska · 441 days ago · 81 km deep · 53 km away
  20. 2.1117 km WSW of Adak, Alaska · 441 days ago · 17 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000qwt9 (also filed as ak0259f34cqz). Read Fri, Oct 2, 2026, 9:44 PM UTC.