Alaska earthquakes

M2.7 earthquake 99 km E of Atka, Alaska

A magnitude 2.7 earthquake struck 99 km E of Atka, Alaska on Tue, Aug 19, 2025, 6:55 AM HADT (15:55 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M3.8 65 km SE 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-19 15:55:35 UTC
Depth
8.8 km (5.5 mi), shallow
Epicenter
52.371° N, 172.775° 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 · ±0.105 · 12 stations
2.2ML, 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, 7.1 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
184°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 40 in the 30 days before it.

After

  1. 2.7120 km E of Atka, Alaska · 407 days ago · 45 km deep · 37 km away
  2. 2.7121 km ESE of Atka, Alaska · 405 days ago · 35 km deep · 63 km away
  3. 2.2132 km E of Atka, Alaska · 405 days ago · 59 km deep · 38 km away
  4. 3.865 km SE of Atka, Alaska · 404 days ago · 15 km deep · 83 km away
  5. 3.452 km ESE of Atka, Alaska · 401 days ago · 59 km deep · 65 km away
  6. 2.162 km ESE of Atka, Alaska · 401 days ago · 65 km deep · 56 km away
  7. 2.147 km ESE of Atka, Alaska · 400 days ago · 54 km deep · 72 km away
  8. 3.8105 km ESE of Atka, Alaska · 400 days ago · 65 km deep · 52 km away
  9. 1.714 km N of Atka, Alaska · 398 days ago · 4 km deep · 94 km away
  10. 3.260 km ESE of Atka, Alaska · 387 days ago · 72 km deep · 65 km away
  11. 3.844 km SE of Atka, Alaska · 383 days ago · 41 km deep · 79 km away
  12. 1.824 km N of Atka, Alaska · 380 days ago · 3 km deep · 94 km away
  13. 1.939 km ENE of Atka, Alaska · 375 days ago · 27 km deep · 61 km away
  14. 3.451 km E of Atka, Alaska · 370 days ago · 10 km deep · 54 km away
  15. 2.230 km E of Atka, Alaska · 370 days ago · 7 km deep · 69 km away
  16. 3.7126 km ESE of Atka, Alaska · 366 days ago · 35 km deep · 82 km away
  17. 3.5121 km SE of Atka, Alaska · 361 days ago · 17 km deep · 96 km away

Before

  1. 1.844 km ESE of Atka, Alaska · 409 days ago · 9 km deep · 68 km away
  2. 2.815 km SSE of Atka, Alaska · 409 days ago · 75 km deep · 94 km away
  3. 2.993 km ESE of Atka, Alaska · 410 days ago · 10 km deep · 57 km away
  4. 1.873 km SE of Atka, Alaska · 410 days ago · 41 km deep · 98 km away
  5. 1.749 km SE of Atka, Alaska · 410 days ago · 69 km deep · 79 km away
  6. 2.731 km ENE of Atka, Alaska · 410 days ago · 170 km deep · 70 km away
  7. 3.976 km SE of Atka, Alaska · 411 days ago · 35 km deep · 88 km away
  8. 2.962 km SSE of Atka, Alaska · 411 days ago · 35 km deep · 95 km away
  9. 3.267 km SE of Atka, Alaska · 411 days ago · 35 km deep · 94 km away
  10. 3.871 km SE of Atka, Alaska · 411 days ago · 56 km deep · 90 km away
  11. 3.1128 km E of Atka, Alaska · 411 days ago · 78 km deep · 36 km away
  12. 2.561 km E of Atka, Alaska · 412 days ago · 9 km deep · 39 km away
  13. 2.725 km NE of Atka, Alaska · 413 days ago · 170 km deep · 77 km away
  14. 1.877 km ESE of Atka, Alaska · 413 days ago · 46 km deep · 58 km away
  15. 1.630 km SE of Atka, Alaska · 414 days ago · 79 km deep · 82 km away
  16. 3.867 km ESE of Atka, Alaska · 417 days ago · 35 km deep · 64 km away
  17. 2.978 km ENE of Atka, Alaska · 418 days ago · 22 km deep · 30 km away
  18. 3.3139 km E of Atka, Alaska · 419 days ago · 24 km deep · 45 km away
  19. 2.476 km ESE of Atka, Alaska · 419 days ago · 13 km deep · 43 km away
  20. 2.633 km NNE of Atka, Alaska · 422 days ago · 166 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rils (also filed as ak025amaej9n). Read Fri, Oct 2, 2026, 8:05 AM UTC.