Alaska earthquakes

M1.7 earthquake 31 km N of Old Harbor, Alaska

A magnitude 1.7 earthquake struck 31 km N of Old Harbor, Alaska on Sun, Aug 31, 2025, 3:22 PM AKDT (23:22 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.6 23 km NW of Old Harbor, Alaska. This one was a foreshock.

Womens Bay forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.7 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-08-31 23:22:52 UTC
Depth
9.2 km (5.7 mi), shallow
Epicenter
57.486° N, 153.363° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
26

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 38 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 2.138 km SE of Old Harbor, Alaska · 397 days ago · 10 km deep · 67 km away
  2. 2.044 km S of Old Harbor, Alaska · 397 days ago · 26 km deep · 76 km away
  3. 1.728 km NNE of Larsen Bay, Alaska · 396 days ago · 35 km deep · 46 km away
  4. 1.732 km S of Larsen Bay, Alaska · 396 days ago · 9 km deep · 42 km away
  5. 1.729 km NNW of Karluk, Alaska · 394 days ago · 61 km deep · 87 km away
  6. 2.224 km NW of Karluk, Alaska · 394 days ago · 60 km deep · 84 km away
  7. 1.832 km W of Karluk, Alaska · 386 days ago · 19 km deep · 98 km away
  8. 3.020 km NW of Akhiok, Alaska · 386 days ago · 34 km deep · 81 km away
  9. 2.833 km WNW of Akhiok, Alaska · 382 days ago · 7 km deep · 94 km away
  10. 2.229 km E of Larsen Bay, Alaska · 381 days ago · 40 km deep · 14 km away
  11. 2.546 km S of Old Harbor, Alaska · 381 days ago · 114 km deep · 79 km away
  12. 1.524 km SW of Karluk, Alaska · 381 days ago · 26 km deep · 86 km away
  13. 2.521 km NE of Chiniak, Alaska · 379 days ago · 50 km deep · 85 km away
  14. 1.521 km WNW of Karluk, Alaska · 375 days ago · 61 km deep · 87 km away
  15. 1.833 km SW of Karluk, Alaska · 370 days ago · 57 km deep · 93 km away
  16. 2.19 km WNW of Aleneva, Alaska · 370 days ago · 146 km deep · 71 km away
  17. 2.413 km SW of Karluk, Alaska · 370 days ago · 65 km deep · 74 km away
  18. 1.617 km NE of Ouzinkie, Alaska · 370 days ago · 49 km deep · 88 km away
  19. 1.725 km SW of Karluk, Alaska · 368 days ago · 29 km deep · 85 km away
  20. 2.619 km WNW of Port Lions, Alaska · 366 days ago · 35 km deep · 50 km away
  21. 2.667 km S of Old Harbor, Alaska · 361 days ago · 129 km deep · 99 km away
  22. 1.89 km SSW of Aleneva, Alaska · 358 days ago · 26 km deep · 59 km away
  23. 1.946 km WNW of Aleneva, Alaska · 357 days ago · 63 km deep · 83 km away
  24. 3.027 km NNE of Old Harbor, Alaska · 356 days ago · 33 km deep · 15 km away
  25. 3.28 km ESE of Womens Bay, Alaska · 352 days ago · 35 km deep · 53 km away · felt by 13
  26. 2.822 km NW of Karluk, Alaska · 351 days ago · 35 km deep · 82 km away
  27. 2.342 km NNE of Larsen Bay, Alaska · 349 days ago · 35 km deep · 49 km away
  28. 2.514 km WNW of Old Harbor, Alaska · 349 days ago · 22 km deep · 29 km away
  29. 2.141 km NW of Karluk, Alaska · 348 days ago · 64 km deep · 100 km away
  30. 2.638 km SSW of Karluk, Alaska · 347 days ago · 55 km deep · 89 km away
  31. 2.233 km NNW of Karluk, Alaska · 345 days ago · 59 km deep · 87 km away
  32. 2.544 km NNE of Larsen Bay, Alaska · 344 days ago · 29 km deep · 56 km away
  33. 2.59 km NNE of Karluk, Alaska · 343 days ago · 36 km deep · 65 km away
  34. 3.130 km NNE of Karluk, Alaska · 342 days ago · 55 km deep · 67 km away
  35. 1.68 km SSE of Karluk, Alaska · 341 days ago · 6 km deep · 63 km away
  36. 1.527 km NNW of Karluk, Alaska · 340 days ago · 51 km deep · 85 km away
  37. 2.324 km NNE of Larsen Bay, Alaska · 340 days ago · 35 km deep · 44 km away
  38. 3.623 km NW of Old Harbor, Alaska · 339 days ago · 29 km deep · 24 km away

Before

  1. 3.029 km N of Old Harbor, Alaska · 398 days ago · 42 km deep · 4 km away
  2. 1.846 km SW of Karluk, Alaska · 398 days ago · 53 km deep · 98 km away
  3. 2.118 km NNW of Karluk, Alaska · 399 days ago · 59 km deep · 78 km away
  4. 1.870 km W of Aleneva, Alaska · 400 days ago · 69 km deep · 89 km away
  5. 1.87 km NW of Port Lions, Alaska · 400 days ago · 37 km deep · 53 km away
  6. 2.024 km NNE of Karluk, Alaska · 402 days ago · 70 km deep · 68 km away
  7. 1.947 km NNW of Karluk, Alaska · 402 days ago · 76 km deep · 99 km away
  8. 2.626 km SW of Karluk, Alaska · 403 days ago · 15 km deep · 82 km away
  9. 2.050 km WNW of Aleneva, Alaska · 403 days ago · 64 km deep · 78 km away
  10. 2.820 km WSW of Womens Bay, Alaska · 404 days ago · 43 km deep · 27 km away
  11. 1.811 km NNW of Akhiok, Alaska · 411 days ago · 25 km deep · 74 km away
  12. 2.060 km N of Karluk, Alaska · 416 days ago · 1 km deep · 97 km away
  13. 1.860 km N of Karluk, Alaska · 416 days ago · 4 km deep · 97 km away
  14. 2.65 km E of Kodiak, Alaska · 417 days ago · 29 km deep · 71 km away · felt by 2
  15. 1.728 km NW of Karluk, Alaska · 421 days ago · 60 km deep · 89 km away
  16. 1.818 km WNW of Aleneva, Alaska · 422 days ago · 45 km deep · 72 km away
  17. 1.834 km SSW of Karluk, Alaska · 424 days ago · 37 km deep · 83 km away
  18. 2.811 km NW of Karluk, Alaska · 424 days ago · 41 km deep · 75 km away
  19. 3.218 km SSW of Akhiok, Alaska · 425 days ago · 43 km deep · 95 km away
  20. 1.543 km WNW of Aleneva, Alaska · 427 days ago · 58 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak025b69f920. Read Sat, Oct 3, 2026, 6:01 PM UTC.