Alaska earthquakes

M2.7 earthquake 265 km W of Adak, Alaska

A magnitude 2.7 earthquake struck 265 km W of Adak, Alaska on Sun, Aug 31, 2025, 8:02 PM GMT+12 (08:02 UTC), 78 km (48 mi) below the surface.

A larger quake followed: M4.5 261 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
2025-08-31 08:02:11 UTC
Depth
77.6 km (48.2 mi), intermediate-depth
Epicenter
51.611° N, 179.539° 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 · ±0.105 · 12 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 11.8 km horizontally, 7.4 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
119°
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 95 in the 30 days before it.

After

  1. 2.0Rat Islands, Aleutian Islands, Alaska · 398 days ago · 36 km deep · 77 km away
  2. 1.8Rat Islands, Aleutian Islands, Alaska · 397 days ago · 9 km deep · 93 km away
  3. 2.1Rat Islands, Aleutian Islands, Alaska · 397 days ago · 148 km deep · 63 km away
  4. 1.6246 km WSW of Adak, Alaska · 396 days ago · 45 km deep · 29 km away
  5. 1.6266 km W of Adak, Alaska · 396 days ago · 68 km deep · 5 km away
  6. 1.6222 km W of Adak, Alaska · 396 days ago · 95 km deep · 46 km away
  7. 2.5240 km WSW of Adak, Alaska · 396 days ago · 5 km deep · 88 km away
  8. 2.1187 km WSW of Adak, Alaska · 388 days ago · 18 km deep · 93 km away
  9. 4.5261 km W of Adak, Alaska · 386 days ago · 73 km deep · 16 km away
  10. 1.7Rat Islands, Aleutian Islands, Alaska · 384 days ago · 5 km deep · 86 km away
  11. 1.6Rat Islands, Aleutian Islands, Alaska · 384 days ago · 6 km deep · 80 km away
  12. 4.5Rat Islands, Aleutian Islands, Alaska · 383 days ago · 113 km deep · 96 km away
  13. 3.2231 km WSW of Adak, Alaska · 382 days ago · 15 km deep · 41 km away
  14. 3.7Rat Islands, Aleutian Islands, Alaska · 380 days ago · 113 km deep · 93 km away
  15. 2.0Rat Islands, Aleutian Islands, Alaska · 379 days ago · 4 km deep · 59 km away
  16. 1.6Rat Islands, Aleutian Islands, Alaska · 374 days ago · 8 km deep · 86 km away
  17. 2.0264 km W of Adak, Alaska · 373 days ago · 4 km deep · 23 km away
  18. 2.6171 km W of Adak, Alaska · 372 days ago · 88 km deep · 95 km away
  19. 2.6225 km W of Adak, Alaska · 372 days ago · 84 km deep · 41 km away
  20. 1.9253 km W of Adak, Alaska · 371 days ago · 3 km deep · 30 km away
  21. 2.2257 km W of Adak, Alaska · 371 days ago · 12 km deep · 35 km away
  22. 1.9258 km W of Adak, Alaska · 368 days ago · 9 km deep · 32 km away
  23. 3.2236 km WSW of Adak, Alaska · 365 days ago · 11 km deep · 73 km away
  24. 4.2200 km W of Adak, Alaska · 364 days ago · 79 km deep · 67 km away
  25. 3.8253 km W of Adak, Alaska · 364 days ago · 173 km deep · 60 km away
  26. 4.2Rat Islands, Aleutian Islands, Alaska · 364 days ago · 18 km deep · 78 km away
  27. 4.5240 km WSW of Adak, Alaska · 358 days ago · 35 km deep · 80 km away
  28. 3.4246 km WSW of Adak, Alaska · 358 days ago · 35 km deep · 88 km away
  29. 1.7260 km W of Adak, Alaska · 357 days ago · 8 km deep · 33 km away
  30. 1.9259 km W of Adak, Alaska · 356 days ago · 7 km deep · 42 km away
  31. 2.8221 km W of Adak, Alaska · 352 days ago · 10 km deep · 45 km away
  32. 2.8206 km W of Adak, Alaska · 351 days ago · 96 km deep · 59 km away

Before

  1. 3.7264 km W of Adak, Alaska · 400 days ago · 77 km deep · 3 km away
  2. 5.1260 km W of Adak, Alaska · 401 days ago · 81 km deep · 12 km away · tsunami flag
  3. 2.0211 km W of Adak, Alaska · 401 days ago · 58 km deep · 56 km away
  4. 2.1Rat Islands, Aleutian Islands, Alaska · 402 days ago · 122 km deep · 97 km away
  5. 1.9237 km W of Adak, Alaska · 402 days ago · 119 km deep · 38 km away
  6. 2.0237 km W of Adak, Alaska · 402 days ago · 127 km deep · 38 km away
  7. 2.2236 km W of Adak, Alaska · 402 days ago · 129 km deep · 41 km away
  8. 2.3239 km W of Adak, Alaska · 402 days ago · 127 km deep · 38 km away
  9. 5.9237 km W of Adak, Alaska · 402 days ago · 130 km deep · 63 km away · felt by 2 · tsunami flag
  10. 1.7Rat Islands, Aleutian Islands, Alaska · 402 days ago · 36 km deep · 53 km away
  11. 1.7201 km WSW of Adak, Alaska · 402 days ago · 43 km deep · 72 km away
  12. 2.8Rat Islands, Aleutian Islands, Alaska · 402 days ago · 106 km deep · 75 km away
  13. 1.8250 km W of Adak, Alaska · 402 days ago · 83 km deep · 17 km away
  14. 2.5192 km W of Adak, Alaska · 403 days ago · 128 km deep · 76 km away
  15. 1.9180 km W of Adak, Alaska · 403 days ago · 100 km deep · 87 km away
  16. 2.7Rat Islands, Aleutian Islands, Alaska · 403 days ago · 124 km deep · 81 km away
  17. 2.6Rat Islands, Aleutian Islands, Alaska · 404 days ago · 67 km deep · 75 km away
  18. 4.0Rat Islands, Aleutian Islands, Alaska · 404 days ago · 91 km deep · 82 km away
  19. 3.0Rat Islands, Aleutian Islands, Alaska · 405 days ago · 97 km deep · 89 km away
  20. 1.9Rat Islands, Aleutian Islands, Alaska · 405 days ago · 53 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rmcv (also filed as ak025b60d951). Read Sun, Oct 4, 2026, 7:39 AM UTC.