Alaska earthquakes

M2.9 earthquake 184 km S of Atka, Alaska

A magnitude 2.9 earthquake struck 184 km S of Atka, Alaska on Fri, May 23, 2025, 9:31 AM HADT (18:31 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 197 km SSE of Atka, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-05-23 18:31:07 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.538° N, 174.392° 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
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
2.7ML, 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 7.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
240°, poorly surrounded by stations
Stations used
22

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 3.2232 km S of Atka, Alaska · 495 days ago · 10 km deep · 49 km away
  2. 3.6209 km SSE of Atka, Alaska · 492 days ago · 10 km deep · 87 km away
  3. 2.6152 km S of Atka, Alaska · 490 days ago · 10 km deep · 55 km away
  4. 3.8197 km SSE of Atka, Alaska · 483 days ago · 10 km deep · 76 km away
  5. 1.9184 km SSW of Atka, Alaska · 483 days ago · 9 km deep · 31 km away
  6. 2.1161 km SSE of Adak, Alaska · 481 days ago · 5 km deep · 76 km away
  7. 2.6176 km SSE of Atka, Alaska · 476 days ago · 10 km deep · 52 km away
  8. 2.6189 km SSE of Atka, Alaska · 476 days ago · 10 km deep · 79 km away
  9. 1.892 km S of Atka, Alaska · 474 days ago · 4 km deep · 93 km away
  10. 2.9141 km S of Atka, Alaska · 463 days ago · 10 km deep · 53 km away
  11. 3.8227 km SSE of Atka, Alaska · 462 days ago · 10 km deep · 89 km away
  12. 2.7111 km S of Atka, Alaska · 457 days ago · 10 km deep · 75 km away
  13. 3.2204 km SSE of Atka, Alaska · 451 days ago · 10 km deep · 70 km away
  14. 2.9182 km SSE of Atka, Alaska · 450 days ago · 10 km deep · 94 km away
  15. 1.998 km SSW of Atka, Alaska · 449 days ago · 17 km deep · 89 km away
  16. 2.0162 km S of Atka, Alaska · 449 days ago · 23 km deep · 39 km away
  17. 3.5206 km SSE of Atka, Alaska · 447 days ago · 10 km deep · 94 km away
  18. 2.6126 km S of Atka, Alaska · 446 days ago · 10 km deep · 65 km away
  19. 2.8194 km SSE of Adak, Alaska · 446 days ago · 10 km deep · 60 km away
  20. 1.9121 km SSW of Atka, Alaska · 445 days ago · 13 km deep · 85 km away
  21. 1.9104 km SSW of Atka, Alaska · 445 days ago · 21 km deep · 89 km away
  22. 3.0119 km SSW of Atka, Alaska · 441 days ago · 22 km deep · 94 km away
  23. 2.9124 km SSW of Atka, Alaska · 441 days ago · 18 km deep · 86 km away
  24. 3.0122 km SSW of Atka, Alaska · 441 days ago · 15 km deep · 90 km away
  25. 2.1120 km SSW of Atka, Alaska · 441 days ago · 14 km deep · 91 km away
  26. 1.7118 km SSW of Atka, Alaska · 437 days ago · 22 km deep · 89 km away
  27. 3.3127 km SSW of Atka, Alaska · 437 days ago · 35 km deep · 85 km away

Before

  1. 2.7210 km S of Atka, Alaska · 497 days ago · 10 km deep · 31 km away
  2. 2.395 km S of Atka, Alaska · 497 days ago · 2 km deep · 90 km away
  3. 2.0185 km S of Atka, Alaska · 501 days ago · 19 km deep · 16 km away
  4. 2.5105 km S of Atka, Alaska · 501 days ago · 10 km deep · 81 km away
  5. 2.5182 km SSE of Atka, Alaska · 503 days ago · 10 km deep · 61 km away
  6. 2.7154 km S of Atka, Alaska · 503 days ago · 10 km deep · 47 km away
  7. 2.7125 km SSE of Atka, Alaska · 504 days ago · 10 km deep · 92 km away
  8. 2.7179 km S of Atka, Alaska · 510 days ago · 10 km deep · 38 km away
  9. 3.9198 km SSE of Atka, Alaska · 510 days ago · 10 km deep · 62 km away
  10. 2.086 km S of Atka, Alaska · 512 days ago · 24 km deep · 99 km away
  11. 2.194 km S of Atka, Alaska · 512 days ago · 14 km deep · 90 km away
  12. 2.199 km S of Atka, Alaska · 512 days ago · 10 km deep · 86 km away
  13. 1.991 km S of Atka, Alaska · 512 days ago · 19 km deep · 94 km away
  14. 2.6152 km S of Atka, Alaska · 514 days ago · 10 km deep · 47 km away
  15. 2.2166 km S of Atka, Alaska · 518 days ago · 4 km deep · 36 km away
  16. 2.3201 km S of Atka, Alaska · 523 days ago · 25 km deep · 20 km away
  17. 3.4183 km SSE of Atka, Alaska · 523 days ago · 7 km deep · 80 km away
  18. 2.8121 km S of Atka, Alaska · 523 days ago · 29 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000qgl8 (also filed as ak0256ksr3gz). Read Fri, Oct 2, 2026, 6:33 AM UTC.