Alaska earthquakes

M3.4 earthquake 52 km ESE of Atka, Alaska

A magnitude 3.4 earthquake struck 52 km ESE of Atka, Alaska on Wed, Aug 27, 2025, 3:18 AM HADT (12:18 UTC), 59 km (37 mi) below the surface.

A larger quake followed: M4.7 107 km S of Atka, 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
3.4 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-27 12:18:59 UTC
Depth
59.0 km (36.7 mi), shallow
Epicenter
51.996° N, 173.506° 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
3.4ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.091 · 16 stations
3.0ML, 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 9.0 km horizontally, 11.8 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
194°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 2.162 km ESE of Atka, Alaska · 401 days ago · 65 km deep · 11 km away
  2. 2.147 km ESE of Atka, Alaska · 400 days ago · 54 km deep · 7 km away
  3. 3.8105 km ESE of Atka, Alaska · 400 days ago · 65 km deep · 54 km away
  4. 1.714 km N of Atka, Alaska · 398 days ago · 4 km deep · 58 km away
  5. 3.788 km S of Atka, Alaska · 398 days ago · 35 km deep · 78 km away
  6. 4.080 km SSE of Atka, Alaska · 397 days ago · 35 km deep · 65 km away
  7. 3.066 km S of Atka, Alaska · 397 days ago · 24 km deep · 67 km away
  8. 4.598 km S of Atka, Alaska · 397 days ago · 10 km deep · 80 km away
  9. 3.4108 km SSE of Atka, Alaska · 396 days ago · 35 km deep · 88 km away
  10. 3.7111 km S of Atka, Alaska · 396 days ago · 10 km deep · 94 km away
  11. 4.7107 km S of Atka, Alaska · 396 days ago · 13 km deep · 89 km away
  12. 2.7102 km SSE of Atka, Alaska · 395 days ago · 35 km deep · 81 km away
  13. 2.139 km S of Atka, Alaska · 395 days ago · 68 km deep · 56 km away
  14. 3.260 km ESE of Atka, Alaska · 388 days ago · 72 km deep · 8 km away
  15. 1.518 km SW of Atka, Alaska · 386 days ago · 9 km deep · 63 km away
  16. 3.844 km SE of Atka, Alaska · 383 days ago · 41 km deep · 14 km away
  17. 1.824 km N of Atka, Alaska · 381 days ago · 3 km deep · 64 km away
  18. 1.939 km ENE of Atka, Alaska · 375 days ago · 27 km deep · 39 km away
  19. 4.586 km S of Atka, Alaska · 372 days ago · 16 km deep · 88 km away
  20. 3.451 km E of Atka, Alaska · 371 days ago · 10 km deep · 15 km away
  21. 2.230 km E of Atka, Alaska · 371 days ago · 7 km deep · 29 km away
  22. 2.155 km SSW of Atka, Alaska · 367 days ago · 63 km deep · 70 km away
  23. 3.7126 km ESE of Atka, Alaska · 366 days ago · 35 km deep · 74 km away
  24. 3.5121 km SE of Atka, Alaska · 361 days ago · 17 km deep · 72 km away

Before

  1. 2.011 km SW of Atka, Alaska · 403 days ago · 16 km deep · 58 km away
  2. 2.070 km SSW of Atka, Alaska · 403 days ago · 40 km deep · 89 km away
  3. 3.865 km SE of Atka, Alaska · 404 days ago · 15 km deep · 24 km away
  4. 2.2132 km E of Atka, Alaska · 405 days ago · 59 km deep · 89 km away
  5. 2.7121 km ESE of Atka, Alaska · 405 days ago · 35 km deep · 69 km away
  6. 1.968 km SSW of Atka, Alaska · 405 days ago · 16 km deep · 80 km away
  7. 2.037 km WSW of Atka, Alaska · 406 days ago · 121 km deep · 80 km away
  8. 1.852 km SSW of Atka, Alaska · 406 days ago · 13 km deep · 73 km away
  9. 3.069 km SW of Atka, Alaska · 407 days ago · 35 km deep · 99 km away
  10. 2.7120 km E of Atka, Alaska · 407 days ago · 45 km deep · 73 km away
  11. 1.957 km WSW of Atka, Alaska · 408 days ago · 69 km deep · 98 km away
  12. 2.281 km SSE of Atka, Alaska · 409 days ago · 17 km deep · 53 km away
  13. 2.799 km E of Atka, Alaska · 409 days ago · 9 km deep · 65 km away
  14. 1.844 km ESE of Atka, Alaska · 409 days ago · 9 km deep · 9 km away
  15. 2.815 km SSE of Atka, Alaska · 410 days ago · 75 km deep · 40 km away
  16. 2.845 km SSE of Atka, Alaska · 410 days ago · 77 km deep · 36 km away
  17. 1.754 km SW of Atka, Alaska · 410 days ago · 64 km deep · 93 km away
  18. 2.993 km ESE of Atka, Alaska · 410 days ago · 10 km deep · 41 km away
  19. 1.888 km SSE of Atka, Alaska · 410 days ago · 39 km deep · 52 km away
  20. 1.873 km SE of Atka, Alaska · 410 days ago · 41 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rlsm (also filed as ak025azgp8b0). Read Fri, Oct 2, 2026, 5:16 PM UTC.