Alaska earthquakes

M1.6 earthquake 35 km NE of Adak, Alaska

A magnitude 1.6 earthquake struck 35 km NE of Adak, Alaska on Tue, Sep 9, 2025, 5:54 AM HADT (14:54 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M4.9 47 km SE 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
1.6 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2025-09-09 14:54:05 UTC
Depth
18.5 km (11.5 mi), shallow
Epicenter
52.061° N, 176.223° 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.

Location uncertainty
About 4.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
262°, poorly surrounded by stations
Stations used
4

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 69 in the 30 days before it.

After

  1. 4.178 km WNW of Atka, Alaska · 387 days ago · 219 km deep · 81 km away
  2. 4.032 km NNE of Adak, Alaska · 386 days ago · 126 km deep · 15 km away · felt by 2
  3. 1.622 km E of Adak, Alaska · 382 days ago · 6 km deep · 18 km away
  4. 1.850 km SW of Adak, Alaska · 373 days ago · 15 km deep · 85 km away
  5. 1.866 km SSE of Adak, Alaska · 373 days ago · 21 km deep · 82 km away
  6. 2.066 km SE of Adak, Alaska · 373 days ago · 26 km deep · 74 km away
  7. 2.783 km W of Atka, Alaska · 373 days ago · 225 km deep · 61 km away
  8. 3.192 km WNW of Atka, Alaska · 373 days ago · 215 km deep · 69 km away
  9. 3.983 km SW of Atka, Alaska · 372 days ago · 35 km deep · 87 km away
  10. 1.651 km SW of Adak, Alaska · 371 days ago · 14 km deep · 87 km away
  11. 3.979 km NE of Adak, Alaska · 368 days ago · 222 km deep · 45 km away
  12. 2.757 km SSW of Adak, Alaska · 365 days ago · 34 km deep · 89 km away
  13. 4.4100 km SW of Atka, Alaska · 362 days ago · 35 km deep · 86 km away
  14. 1.655 km W of Adak, Alaska · 359 days ago · -2 km deep · 86 km away
  15. 2.672 km SE of Adak, Alaska · 352 days ago · 35 km deep · 80 km away
  16. 2.454 km SW of Adak, Alaska · 352 days ago · 36 km deep · 89 km away
  17. 1.989 km ESE of Adak, Alaska · 352 days ago · 19 km deep · 78 km away
  18. 1.618 km W of Adak, Alaska · 350 days ago · 3 km deep · 52 km away
  19. 1.810 km NE of Adak, Alaska · 346 days ago · 28 km deep · 25 km away
  20. 4.947 km SE of Adak, Alaska · 345 days ago · 57 km deep · 54 km away · felt by 1
  21. 3.679 km WSW of Atka, Alaska · 339 days ago · 60 km deep · 75 km away

Before

  1. 2.582 km ESE of Adak, Alaska · 397 days ago · 50 km deep · 70 km away
  2. 1.585 km WSW of Atka, Alaska · 397 days ago · 17 km deep · 55 km away
  3. 2.773 km SSE of Adak, Alaska · 397 days ago · 25 km deep · 84 km away
  4. 2.740 km SW of Adak, Alaska · 398 days ago · 77 km deep · 75 km away
  5. 1.953 km SE of Adak, Alaska · 398 days ago · 56 km deep · 59 km away
  6. 1.953 km SSE of Adak, Alaska · 398 days ago · 56 km deep · 67 km away
  7. 3.340 km NNW of Adak, Alaska · 398 days ago · 173 km deep · 51 km away
  8. 2.031 km SSW of Adak, Alaska · 399 days ago · 63 km deep · 63 km away
  9. 2.147 km SE of Adak, Alaska · 400 days ago · 37 km deep · 57 km away
  10. 2.678 km ENE of Adak, Alaska · 403 days ago · 182 km deep · 43 km away
  11. 1.756 km SE of Adak, Alaska · 403 days ago · 25 km deep · 67 km away
  12. 1.642 km SSE of Adak, Alaska · 403 days ago · 36 km deep · 59 km away
  13. 1.989 km SW of Atka, Alaska · 403 days ago · 41 km deep · 77 km away
  14. 2.96 km SSE of Adak, Alaska · 404 days ago · 75 km deep · 38 km away
  15. 1.656 km WSW of Adak, Alaska · 404 days ago · 7 km deep · 90 km away
  16. 3.253 km SE of Adak, Alaska · 404 days ago · 35 km deep · 58 km away
  17. 1.967 km SSW of Adak, Alaska · 405 days ago · 33 km deep · 99 km away
  18. 1.884 km SSE of Adak, Alaska · 405 days ago · 18 km deep · 99 km away
  19. 1.846 km SSE of Adak, Alaska · 406 days ago · 29 km deep · 63 km away
  20. 1.962 km SE of Adak, Alaska · 406 days ago · 26 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av93758123. Read Mon, Oct 5, 2026, 9:33 AM UTC.