Alaska earthquakes

M2.7 earthquake 165 km SSW of Adak, Alaska

A magnitude 2.7 earthquake struck 165 km SSW of Adak, Alaska on Tue, Aug 5, 2025, 8:08 AM HADT (17:08 UTC), 38 km (24 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-05 17:08:11 UTC
Depth
38.5 km (23.9 mi), shallow
Epicenter
50.438° N, 177.276° 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
2.7ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
2.5ML, 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 6.7 km horizontally, 26.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
233°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 1.7114 km SW of Adak, Alaska · 424 days ago · 13 km deep · 77 km away
  2. 2.5182 km S of Adak, Alaska · 424 days ago · 35 km deep · 45 km away
  3. 3.0100 km SW of Adak, Alaska · 423 days ago · 35 km deep · 95 km away
  4. 2.068 km SSW of Adak, Alaska · 422 days ago · 28 km deep · 99 km away
  5. 2.4169 km SSW of Adak, Alaska · 421 days ago · 12 km deep · 18 km away
  6. 2.673 km SSW of Adak, Alaska · 421 days ago · 35 km deep · 94 km away
  7. 2.4185 km S of Adak, Alaska · 420 days ago · 12 km deep · 58 km away
  8. 2.5106 km SSW of Adak, Alaska · 419 days ago · 10 km deep · 62 km away
  9. 2.2140 km SW of Adak, Alaska · 417 days ago · 21 km deep · 96 km away
  10. 2.7172 km SSW of Adak, Alaska · 417 days ago · 10 km deep · 11 km away
  11. 1.7125 km SW of Adak, Alaska · 416 days ago · 22 km deep · 96 km away
  12. 1.9130 km SW of Adak, Alaska · 415 days ago · 25 km deep · 91 km away
  13. 3.371 km SSW of Adak, Alaska · 414 days ago · 35 km deep · 96 km away
  14. 2.7193 km SSW of Adak, Alaska · 413 days ago · 9 km deep · 62 km away
  15. 1.569 km SSW of Adak, Alaska · 409 days ago · 26 km deep · 96 km away
  16. 2.0171 km S of Adak, Alaska · 409 days ago · 10 km deep · 70 km away
  17. 2.094 km SW of Adak, Alaska · 407 days ago · 27 km deep · 98 km away
  18. 2.6107 km SSE of Adak, Alaska · 403 days ago · 10 km deep · 99 km away
  19. 2.9175 km SSW of Adak, Alaska · 403 days ago · 10 km deep · 38 km away
  20. 3.4105 km SSE of Adak, Alaska · 403 days ago · 12 km deep · 98 km away
  21. 1.967 km SSW of Adak, Alaska · 403 days ago · 33 km deep · 99 km away
  22. 1.9127 km SW of Adak, Alaska · 403 days ago · 26 km deep · 98 km away
  23. 2.9101 km SW of Adak, Alaska · 399 days ago · 35 km deep · 95 km away
  24. 2.4249 km SSW of Adak, Alaska · 395 days ago · 12 km deep · 90 km away
  25. 1.895 km SW of Adak, Alaska · 395 days ago · 27 km deep · 94 km away
  26. 3.8110 km SSW of Adak, Alaska · 393 days ago · 8 km deep · 56 km away
  27. 5.5122 km SW of Adak, Alaska · 377 days ago · 30 km deep · 99 km away · felt by 4 · tsunami flag
  28. 3.898 km SW of Adak, Alaska · 375 days ago · 43 km deep · 91 km away
  29. 2.1117 km SW of Adak, Alaska · 371 days ago · 26 km deep · 99 km away
  30. 3.8103 km S of Adak, Alaska · 370 days ago · 10 km deep · 64 km away

Before

  1. 2.8204 km SSW of Adak, Alaska · 425 days ago · 10 km deep · 51 km away
  2. 2.7159 km SSE of Adak, Alaska · 425 days ago · 10 km deep · 94 km away
  3. 3.295 km SW of Adak, Alaska · 428 days ago · 35 km deep · 95 km away
  4. 3.0118 km SSW of Adak, Alaska · 429 days ago · 10 km deep · 58 km away
  5. 2.7112 km SSW of Adak, Alaska · 429 days ago · 21 km deep · 66 km away
  6. 2.0119 km SW of Adak, Alaska · 430 days ago · 27 km deep · 97 km away
  7. 1.9167 km S of Adak, Alaska · 431 days ago · 25 km deep · 38 km away
  8. 3.182 km SW of Adak, Alaska · 431 days ago · 35 km deep · 93 km away
  9. 2.981 km SW of Adak, Alaska · 431 days ago · 47 km deep · 95 km away
  10. 2.9246 km SSW of Adak, Alaska · 433 days ago · 10 km deep · 93 km away
  11. 2.0166 km S of Adak, Alaska · 433 days ago · 26 km deep · 30 km away
  12. 1.5143 km SW of Adak, Alaska · 434 days ago · 20 km deep · 98 km away
  13. 1.8100 km SW of Adak, Alaska · 435 days ago · 27 km deep · 87 km away
  14. 2.7184 km SSW of Adak, Alaska · 439 days ago · 10 km deep · 20 km away
  15. 2.586 km SW of Adak, Alaska · 440 days ago · 35 km deep · 94 km away
  16. 2.1117 km SW of Adak, Alaska · 441 days ago · 25 km deep · 99 km away
  17. 1.892 km SW of Adak, Alaska · 444 days ago · 30 km deep · 100 km away
  18. 3.567 km S of Adak, Alaska · 447 days ago · 28 km deep · 99 km away
  19. 2.3191 km SSW of Adak, Alaska · 448 days ago · 9 km deep · 28 km away
  20. 1.868 km SSW of Adak, Alaska · 450 days ago · 26 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000reqi (also filed as ak0259z5sey6). Read Sat, Oct 3, 2026, 1:48 PM UTC.