Alaska earthquakes

M3.0 earthquake 163 km S of Atka, Alaska

A magnitude 3.0 earthquake struck 163 km S of Atka, Alaska on Sun, Mar 23, 2025, 12:01 AM HADT (09:01 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.9 198 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-03-23 09:01:08 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.740° N, 173.894° 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
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.105 · 12 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 3.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
285°, poorly surrounded by stations
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 36 in the 60 days after this one and 23 in the 30 days before it.

After

  1. 2.195 km S of Atka, Alaska · 557 days ago · 13 km deep · 77 km away
  2. 3.177 km SSE of Atka, Alaska · 555 days ago · 35 km deep · 90 km away
  3. 2.8198 km SSE of Adak, Alaska · 554 days ago · 10 km deep · 90 km away
  4. 1.980 km SSE of Atka, Alaska · 554 days ago · 17 km deep · 94 km away
  5. 3.2213 km SSE of Atka, Alaska · 554 days ago · 10 km deep · 57 km away
  6. 2.2152 km SSE of Atka, Alaska · 552 days ago · 13 km deep · 17 km away
  7. 2.1119 km SE of Atka, Alaska · 552 days ago · 1 km deep · 89 km away
  8. 1.975 km SSE of Atka, Alaska · 552 days ago · 37 km deep · 96 km away
  9. 2.9140 km SSE of Atka, Alaska · 545 days ago · 10 km deep · 34 km away
  10. 2.081 km S of Atka, Alaska · 543 days ago · 20 km deep · 86 km away
  11. 1.980 km SSE of Atka, Alaska · 542 days ago · 26 km deep · 89 km away
  12. 2.2169 km SE of Adak, Alaska · 542 days ago · 19 km deep · 79 km away
  13. 1.896 km S of Atka, Alaska · 539 days ago · 2 km deep · 74 km away
  14. 2.581 km SSE of Atka, Alaska · 539 days ago · 10 km deep · 92 km away
  15. 3.592 km SSE of Atka, Alaska · 537 days ago · 35 km deep · 89 km away
  16. 2.6100 km S of Atka, Alaska · 532 days ago · 10 km deep · 70 km away
  17. 2.599 km SE of Atka, Alaska · 532 days ago · 35 km deep · 92 km away
  18. 2.8121 km S of Atka, Alaska · 523 days ago · 29 km deep · 48 km away
  19. 3.4183 km SSE of Atka, Alaska · 523 days ago · 7 km deep · 45 km away
  20. 2.3201 km S of Atka, Alaska · 522 days ago · 25 km deep · 61 km away
  21. 2.2166 km S of Atka, Alaska · 518 days ago · 4 km deep · 6 km away
  22. 2.6152 km S of Atka, Alaska · 513 days ago · 10 km deep · 11 km away
  23. 1.991 km S of Atka, Alaska · 512 days ago · 19 km deep · 80 km away
  24. 2.199 km S of Atka, Alaska · 512 days ago · 10 km deep · 69 km away
  25. 2.194 km S of Atka, Alaska · 511 days ago · 14 km deep · 76 km away
  26. 2.086 km S of Atka, Alaska · 511 days ago · 24 km deep · 83 km away
  27. 2.789 km SE of Atka, Alaska · 511 days ago · 35 km deep · 96 km away
  28. 3.191 km SE of Atka, Alaska · 511 days ago · 35 km deep · 94 km away
  29. 3.9198 km SSE of Atka, Alaska · 510 days ago · 10 km deep · 40 km away
  30. 2.7179 km S of Atka, Alaska · 509 days ago · 10 km deep · 16 km away
  31. 2.7125 km SSE of Atka, Alaska · 504 days ago · 10 km deep · 53 km away
  32. 2.7154 km S of Atka, Alaska · 503 days ago · 10 km deep · 9 km away
  33. 2.5182 km SSE of Atka, Alaska · 503 days ago · 10 km deep · 29 km away
  34. 2.5105 km S of Atka, Alaska · 501 days ago · 10 km deep · 71 km away
  35. 2.0185 km S of Atka, Alaska · 501 days ago · 19 km deep · 56 km away
  36. 2.489 km SSE of Atka, Alaska · 499 days ago · 16 km deep · 89 km away

Before

  1. 3.3178 km S of Atka, Alaska · 559 days ago · 10 km deep · 17 km away
  2. 3.5232 km SSE of Atka, Alaska · 562 days ago · 10 km deep · 83 km away
  3. 2.7145 km S of Atka, Alaska · 563 days ago · 10 km deep · 18 km away
  4. 2.963 km S of Atka, Alaska · 563 days ago · 35 km deep · 100 km away
  5. 2.9183 km SSE of Atka, Alaska · 566 days ago · 10 km deep · 37 km away
  6. 3.2129 km SSE of Atka, Alaska · 568 days ago · 35 km deep · 63 km away
  7. 3.1195 km S of Atka, Alaska · 570 days ago · 10 km deep · 32 km away
  8. 3.0152 km SSE of Atka, Alaska · 576 days ago · 10 km deep · 32 km away
  9. 2.3128 km S of Atka, Alaska · 578 days ago · 1 km deep · 38 km away
  10. 2.1106 km S of Atka, Alaska · 578 days ago · 26 km deep · 62 km away
  11. 2.890 km S of Atka, Alaska · 578 days ago · 35 km deep · 76 km away
  12. 4.3114 km SSW of Atka, Alaska · 580 days ago · 30 km deep · 93 km away
  13. 2.8205 km S of Atka, Alaska · 580 days ago · 10 km deep · 50 km away
  14. 2.4162 km SSE of Atka, Alaska · 582 days ago · 1 km deep · 50 km away
  15. 2.893 km SSE of Atka, Alaska · 582 days ago · 35 km deep · 71 km away
  16. 2.9191 km SSE of Atka, Alaska · 583 days ago · 10 km deep · 57 km away
  17. 2.4133 km S of Atka, Alaska · 583 days ago · 6 km deep · 30 km away
  18. 2.9185 km SSE of Atka, Alaska · 583 days ago · 10 km deep · 55 km away
  19. 2.1161 km SE of Adak, Alaska · 583 days ago · 10 km deep · 91 km away
  20. 2.195 km S of Atka, Alaska · 585 days ago · 15 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000q7ip (also filed as ak0253rrflel). Read Fri, Oct 2, 2026, 4:22 AM UTC.