Alaska earthquakes

M2.7 earthquake 263 km W of Adak, Alaska

A magnitude 2.7 earthquake struck 263 km W of Adak, Alaska on Sat, Aug 9, 2025, 6:44 AM GMT+12 (18:44 UTC), 79 km (49 mi) below the surface.

A larger quake followed: M5.9 237 km W 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-08 18:44:07 UTC
Depth
79.4 km (49.3 mi), intermediate-depth
Epicenter
51.637° N, 179.564° E
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
2.7ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.091 · 16 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 9.1 km horizontally, 11.2 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
118°
Stations used
22

Nearby

Within 100 km, magnitude 1.5 and up: 102 in the 60 days after this one and 105 in the 30 days before it.

After

  1. 2.3219 km WSW of Adak, Alaska · 420 days ago · 16 km deep · 62 km away
  2. 2.7269 km WSW of Adak, Alaska · 419 days ago · 35 km deep · 51 km away
  3. 3.7Rat Islands, Aleutian Islands, Alaska · 419 days ago · 157 km deep · 87 km away
  4. 1.6254 km WSW of Adak, Alaska · 419 days ago · 53 km deep · 30 km away
  5. 2.9170 km W of Adak, Alaska · 419 days ago · 14 km deep · 93 km away
  6. 1.9187 km WSW of Adak, Alaska · 418 days ago · 9 km deep · 91 km away
  7. 3.0177 km WSW of Adak, Alaska · 418 days ago · 35 km deep · 99 km away
  8. 2.6266 km WSW of Adak, Alaska · 418 days ago · 46 km deep · 37 km away
  9. 1.8236 km W of Adak, Alaska · 416 days ago · 86 km deep · 28 km away
  10. 2.7231 km W of Adak, Alaska · 415 days ago · 95 km deep · 32 km away
  11. 1.6168 km W of Adak, Alaska · 415 days ago · 9 km deep · 96 km away
  12. 2.0180 km WSW of Adak, Alaska · 415 days ago · 10 km deep · 96 km away
  13. 2.0Rat Islands, Aleutian Islands, Alaska · 415 days ago · 39 km deep · 91 km away
  14. 1.9194 km WSW of Adak, Alaska · 415 days ago · 70 km deep · 72 km away
  15. 2.6223 km WSW of Adak, Alaska · 415 days ago · 7 km deep · 51 km away
  16. 1.8201 km W of Adak, Alaska · 415 days ago · 85 km deep · 63 km away
  17. 2.3Rat Islands, Aleutian Islands, Alaska · 414 days ago · 92 km deep · 71 km away
  18. 2.1Rat Islands, Aleutian Islands, Alaska · 414 days ago · 20 km deep · 90 km away
  19. 2.0293 km W of Adak, Alaska · 413 days ago · 76 km deep · 31 km away
  20. 1.9214 km WSW of Adak, Alaska · 413 days ago · 19 km deep · 69 km away
  21. 1.8285 km W of Adak, Alaska · 413 days ago · 80 km deep · 23 km away
  22. 2.0226 km W of Adak, Alaska · 413 days ago · 87 km deep · 38 km away
  23. 2.1Rat Islands, Aleutian Islands, Alaska · 412 days ago · 141 km deep · 93 km away
  24. 2.2295 km W of Adak, Alaska · 412 days ago · 51 km deep · 34 km away
  25. 1.9213 km WSW of Adak, Alaska · 411 days ago · 57 km deep · 55 km away
  26. 1.8291 km W of Adak, Alaska · 411 days ago · 63 km deep · 29 km away
  27. 1.8241 km WSW of Adak, Alaska · 411 days ago · 7 km deep · 33 km away
  28. 2.0Rat Islands, Aleutian Islands, Alaska · 411 days ago · 139 km deep · 93 km away
  29. 2.2Rat Islands, Aleutian Islands, Alaska · 411 days ago · 116 km deep · 76 km away
  30. 1.8Rat Islands, Aleutian Islands, Alaska · 410 days ago · 76 km deep · 54 km away
  31. 1.8281 km W of Adak, Alaska · 410 days ago · 59 km deep · 25 km away
  32. 2.0233 km WSW of Adak, Alaska · 410 days ago · 2 km deep · 99 km away
  33. 1.9Rat Islands, Aleutian Islands, Alaska · 410 days ago · 97 km deep · 76 km away
  34. 2.7238 km W of Adak, Alaska · 409 days ago · 136 km deep · 46 km away
  35. 2.6211 km WSW of Adak, Alaska · 409 days ago · 32 km deep · 74 km away
  36. 3.0Rat Islands, Aleutian Islands, Alaska · 409 days ago · 30 km deep · 80 km away
  37. 1.8193 km WSW of Adak, Alaska · 409 days ago · 21 km deep · 91 km away
  38. 1.7178 km WSW of Adak, Alaska · 409 days ago · 16 km deep · 100 km away
  39. 2.1Rat Islands, Aleutian Islands, Alaska · 409 days ago · 22 km deep · 63 km away
  40. 1.8228 km W of Adak, Alaska · 409 days ago · 72 km deep · 35 km away
  41. 1.9254 km W of Adak, Alaska · 409 days ago · 99 km deep · 20 km away
  42. 3.3Rat Islands, Aleutian Islands, Alaska · 408 days ago · 23 km deep · 71 km away
  43. 2.0Rat Islands, Aleutian Islands, Alaska · 408 days ago · 78 km deep · 72 km away
  44. 2.9217 km W of Adak, Alaska · 407 days ago · 123 km deep · 52 km away
  45. 4.0298 km WSW of Adak, Alaska · 407 days ago · 41 km deep · 52 km away
  46. 2.6270 km W of Adak, Alaska · 407 days ago · 114 km deep · 19 km away
  47. 3.0179 km WSW of Adak, Alaska · 406 days ago · 23 km deep · 95 km away
  48. 3.0Rat Islands, Aleutian Islands, Alaska · 406 days ago · 72 km deep · 48 km away
  49. 2.6242 km W of Adak, Alaska · 406 days ago · 68 km deep · 24 km away
  50. 2.9Rat Islands, Aleutian Islands, Alaska · 406 days ago · 42 km deep · 85 km away
  51. 2.1181 km WSW of Adak, Alaska · 406 days ago · 13 km deep · 97 km away
  52. 1.9169 km W of Adak, Alaska · 405 days ago · 10 km deep · 94 km away
  53. 2.7258 km WSW of Adak, Alaska · 404 days ago · 33 km deep · 49 km away
  54. 2.0181 km WSW of Adak, Alaska · 404 days ago · 9 km deep · 93 km away
  55. 2.0Rat Islands, Aleutian Islands, Alaska · 404 days ago · 40 km deep · 49 km away
  56. 1.9Rat Islands, Aleutian Islands, Alaska · 404 days ago · 53 km deep · 51 km away
  57. 3.0Rat Islands, Aleutian Islands, Alaska · 404 days ago · 97 km deep · 90 km away
  58. 4.0Rat Islands, Aleutian Islands, Alaska · 403 days ago · 91 km deep · 83 km away
  59. 2.6Rat Islands, Aleutian Islands, Alaska · 402 days ago · 67 km deep · 77 km away
  60. 2.7Rat Islands, Aleutian Islands, Alaska · 402 days ago · 124 km deep · 82 km away

The first 60 of 102.

Before

  1. 2.8275 km W of Adak, Alaska · 421 days ago · 99 km deep · 16 km away
  2. 1.9Rat Islands, Aleutian Islands, Alaska · 421 days ago · 9 km deep · 67 km away
  3. 2.0Rat Islands, Aleutian Islands, Alaska · 422 days ago · 61 km deep · 48 km away
  4. 1.9237 km WSW of Adak, Alaska · 422 days ago · 13 km deep · 80 km away
  5. 2.1236 km W of Adak, Alaska · 422 days ago · 69 km deep · 31 km away
  6. 2.0241 km WSW of Adak, Alaska · 422 days ago · 15 km deep · 43 km away
  7. 1.9Rat Islands, Aleutian Islands, Alaska · 422 days ago · 7 km deep · 66 km away
  8. 1.6181 km W of Adak, Alaska · 422 days ago · 9 km deep · 82 km away
  9. 2.5Rat Islands, Aleutian Islands, Alaska · 423 days ago · 69 km deep · 49 km away
  10. 3.3173 km W of Adak, Alaska · 423 days ago · 140 km deep · 93 km away
  11. 1.8229 km WSW of Adak, Alaska · 423 days ago · 11 km deep · 57 km away
  12. 2.0237 km WSW of Adak, Alaska · 423 days ago · 13 km deep · 73 km away
  13. 2.8Rat Islands, Aleutian Islands, Alaska · 424 days ago · 71 km deep · 91 km away
  14. 1.7265 km WSW of Adak, Alaska · 424 days ago · 19 km deep · 50 km away
  15. 2.1Rat Islands, Aleutian Islands, Alaska · 424 days ago · 72 km deep · 75 km away
  16. 1.8248 km WSW of Adak, Alaska · 424 days ago · 38 km deep · 50 km away
  17. 1.8279 km WSW of Adak, Alaska · 425 days ago · 19 km deep · 61 km away
  18. 1.8Rat Islands, Aleutian Islands, Alaska · 425 days ago · 40 km deep · 51 km away
  19. 2.7Rat Islands, Aleutian Islands, Alaska · 426 days ago · 35 km deep · 84 km away
  20. 2.6Rat Islands, Aleutian Islands, Alaska · 428 days ago · 35 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rgn8 (also filed as ak025a457lh1). Read Sat, Oct 3, 2026, 6:47 AM UTC.