Alaska earthquakes

M1.6 earthquake 30 km SSW of Unalaska, Alaska

A magnitude 1.6 earthquake struck 30 km SSW of Unalaska, Alaska on Tue, Aug 26, 2025, 12:17 AM AKDT (08:17 UTC), 78 km (48 mi) below the surface.

A larger quake followed: M5.1 49 km S of Akutan, Alaska. This one was a foreshock.

Unalaska 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
1.6 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-08-26 08:17:47 UTC
Depth
77.5 km (48.2 mi), intermediate-depth
Epicenter
53.612° N, 166.668° 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
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 71 in the 30 days before it.

After

  1. 1.850 km SW of Unalaska, Alaska · 401 days ago · 18 km deep · 27 km away
  2. 1.921 km ESE of Unalaska, Alaska · 400 days ago · 79 km deep · 34 km away
  3. 1.926 km SE of Unalaska, Alaska · 398 days ago · 72 km deep · 34 km away
  4. 2.3103 km E of Nikolski, Alaska · 397 days ago · 47 km deep · 97 km away
  5. 3.535 km SE of Akutan, Alaska · 397 days ago · 66 km deep · 93 km away
  6. 2.593 km WSW of Unalaska, Alaska · 397 days ago · 100 km deep · 76 km away
  7. 1.9102 km SE of Unalaska, Alaska · 396 days ago · 13 km deep · 87 km away
  8. 1.567 km SE of Unalaska, Alaska · 395 days ago · 26 km deep · 55 km away
  9. 1.933 km SW of Unalaska, Alaska · 395 days ago · 75 km deep · 10 km away
  10. 2.616 km SE of Unalaska, Alaska · 395 days ago · 81 km deep · 27 km away
  11. 2.755 km SW of Unalaska, Alaska · 395 days ago · 17 km deep · 31 km away
  12. 4.426 km W of Akutan, Alaska · 392 days ago · 103 km deep · 69 km away
  13. 2.111 km NW of Dutch Harbor, Alaska · 374 days ago · 11 km deep · 38 km away
  14. 2.924 km ENE of Dutch Harbor, Alaska · 370 days ago · 127 km deep · 53 km away
  15. 1.753 km SW of Unalaska, Alaska · 370 days ago · 15 km deep · 34 km away
  16. 3.789 km E of Nikolski, Alaska · 366 days ago · 82 km deep · 87 km away
  17. 3.765 km SE of Unalaska, Alaska · 362 days ago · 53 km deep · 56 km away
  18. 5.149 km S of Akutan, Alaska · 350 days ago · 85 km deep · 55 km away · felt by 20 · tsunami flag
  19. 1.69 km N of Dutch Harbor, Alaska · 349 days ago · 7 km deep · 41 km away
  20. 2.8101 km S of Unalaska, Alaska · 349 days ago · 35 km deep · 74 km away
  21. 1.641 km SE of Akutan, Alaska · 349 days ago · 51 km deep · 93 km away
  22. 1.613 km SSW of Unalaska, Alaska · 344 days ago · 9 km deep · 17 km away

Before

  1. 1.860 km SSE of Unalaska, Alaska · 403 days ago · 53 km deep · 43 km away
  2. 2.624 km SE of Unalaska, Alaska · 403 days ago · 74 km deep · 32 km away
  3. 1.587 km SSW of Unalaska, Alaska · 404 days ago · 26 km deep · 57 km away
  4. 1.875 km SE of Unalaska, Alaska · 404 days ago · 39 km deep · 69 km away
  5. 1.7110 km E of Nikolski, Alaska · 404 days ago · 38 km deep · 89 km away
  6. 1.526 km NW of Akutan, Alaska · 404 days ago · 117 km deep · 87 km away
  7. 2.674 km SSE of Unalaska, Alaska · 405 days ago · 35 km deep · 50 km away
  8. 1.726 km NW of Akutan, Alaska · 405 days ago · 100 km deep · 82 km away
  9. 3.166 km SE of Unalaska, Alaska · 405 days ago · 35 km deep · 56 km away
  10. 1.854 km NNW of Dutch Harbor, Alaska · 406 days ago · 160 km deep · 80 km away
  11. 1.781 km SSE of Unalaska, Alaska · 409 days ago · 21 km deep · 61 km away
  12. 1.876 km S of Unalaska, Alaska · 409 days ago · 50 km deep · 46 km away
  13. 2.634 km SW of Unalaska, Alaska · 409 days ago · 79 km deep · 19 km away
  14. 1.7101 km SSW of Unalaska, Alaska · 410 days ago · 32 km deep · 72 km away
  15. 1.596 km SSW of Unalaska, Alaska · 410 days ago · 26 km deep · 66 km away
  16. 1.593 km SSW of Unalaska, Alaska · 410 days ago · 26 km deep · 63 km away
  17. 1.554 km SW of Unalaska, Alaska · 410 days ago · 16 km deep · 34 km away
  18. 1.984 km SSW of Unalaska, Alaska · 411 days ago · 28 km deep · 54 km away
  19. 1.635 km SSW of Unalaska, Alaska · 413 days ago · 71 km deep · 5 km away
  20. 1.527 km SE of Unalaska, Alaska · 413 days ago · 69 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak025axqrt7w. Read Fri, Oct 2, 2026, 8:23 AM UTC.