Alaska earthquakes

M2.6 earthquake 100 km S of Atka, Alaska

A magnitude 2.6 earthquake struck 100 km S of Atka, Alaska on Thu, Apr 17, 2025, 11:35 PM HADT (08:35 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.1 62 km WSW 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
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-04-18 08:35:02 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.297° N, 174.357° 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
2.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.128 · 8 stations
2.4ML, 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 4.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
275°, poorly surrounded by stations
Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: 91 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 2.599 km SE of Atka, Alaska · 532 days ago · 35 km deep · 75 km away
  2. 2.554 km SSW of Atka, Alaska · 531 days ago · 35 km deep · 51 km away
  3. 2.826 km S of Atka, Alaska · 531 days ago · 10 km deep · 75 km away
  4. 2.838 km S of Atka, Alaska · 530 days ago · 71 km deep · 65 km away
  5. 1.720 km WSW of Atka, Alaska · 530 days ago · 21 km deep · 90 km away
  6. 2.676 km ESE of Adak, Alaska · 529 days ago · 54 km deep · 94 km away
  7. 1.935 km SSW of Atka, Alaska · 527 days ago · 62 km deep · 66 km away
  8. 1.837 km WSW of Atka, Alaska · 526 days ago · 36 km deep · 93 km away
  9. 2.057 km WSW of Atka, Alaska · 525 days ago · 74 km deep · 84 km away
  10. 2.297 km SW of Atka, Alaska · 525 days ago · 26 km deep · 68 km away
  11. 2.374 km ESE of Atka, Alaska · 523 days ago · 44 km deep · 95 km away
  12. 2.8121 km S of Atka, Alaska · 523 days ago · 29 km deep · 22 km away
  13. 2.884 km SE of Adak, Alaska · 523 days ago · 35 km deep · 94 km away
  14. 2.686 km E of Adak, Alaska · 523 days ago · 67 km deep · 91 km away
  15. 2.857 km WSW of Atka, Alaska · 521 days ago · 70 km deep · 87 km away
  16. 2.2166 km S of Atka, Alaska · 518 days ago · 4 km deep · 72 km away
  17. 3.042 km SE of Atka, Alaska · 517 days ago · 10 km deep · 80 km away
  18. 2.051 km S of Atka, Alaska · 517 days ago · 35 km deep · 50 km away
  19. 2.3100 km ESE of Adak, Alaska · 516 days ago · 26 km deep · 70 km away
  20. 3.453 km WSW of Atka, Alaska · 515 days ago · 82 km deep · 92 km away
  21. 2.062 km SW of Atka, Alaska · 515 days ago · 49 km deep · 68 km away
  22. 2.694 km ESE of Adak, Alaska · 514 days ago · 35 km deep · 78 km away
  23. 2.848 km SSE of Atka, Alaska · 514 days ago · 81 km deep · 65 km away
  24. 2.6152 km S of Atka, Alaska · 513 days ago · 10 km deep · 60 km away
  25. 2.175 km SW of Atka, Alaska · 513 days ago · 26 km deep · 53 km away
  26. 1.991 km S of Atka, Alaska · 511 days ago · 19 km deep · 10 km away
  27. 3.774 km SW of Atka, Alaska · 511 days ago · 35 km deep · 54 km away
  28. 2.199 km S of Atka, Alaska · 511 days ago · 10 km deep · 3 km away
  29. 2.194 km S of Atka, Alaska · 511 days ago · 14 km deep · 6 km away
  30. 2.086 km S of Atka, Alaska · 511 days ago · 24 km deep · 14 km away
  31. 2.789 km SE of Atka, Alaska · 511 days ago · 35 km deep · 70 km away
  32. 3.191 km SE of Atka, Alaska · 511 days ago · 35 km deep · 70 km away
  33. 2.7179 km S of Atka, Alaska · 509 days ago · 10 km deep · 86 km away
  34. 1.731 km SE of Atka, Alaska · 509 days ago · 6 km deep · 90 km away
  35. 2.777 km ESE of Adak, Alaska · 509 days ago · 60 km deep · 92 km away
  36. 2.944 km SSE of Atka, Alaska · 508 days ago · 19 km deep · 62 km away
  37. 4.162 km WSW of Atka, Alaska · 507 days ago · 75 km deep · 100 km away
  38. 1.967 km SW of Atka, Alaska · 506 days ago · 47 km deep · 73 km away
  39. 2.344 km SE of Atka, Alaska · 506 days ago · 24 km deep · 86 km away
  40. 1.724 km WSW of Atka, Alaska · 505 days ago · 25 km deep · 89 km away
  41. 3.139 km SE of Atka, Alaska · 505 days ago · 14 km deep · 85 km away
  42. 2.031 km S of Atka, Alaska · 504 days ago · 84 km deep · 69 km away
  43. 2.7125 km SSE of Atka, Alaska · 503 days ago · 10 km deep · 61 km away
  44. 2.7154 km S of Atka, Alaska · 503 days ago · 10 km deep · 62 km away
  45. 2.5182 km SSE of Atka, Alaska · 502 days ago · 10 km deep · 96 km away
  46. 1.886 km SE of Adak, Alaska · 502 days ago · 26 km deep · 88 km away
  47. 1.982 km SE of Atka, Alaska · 502 days ago · 4 km deep · 77 km away
  48. 1.872 km ESE of Atka, Alaska · 501 days ago · 51 km deep · 96 km away
  49. 2.5105 km S of Atka, Alaska · 501 days ago · 10 km deep · 10 km away
  50. 2.136 km ESE of Atka, Alaska · 501 days ago · 7 km deep · 96 km away
  51. 2.0185 km S of Atka, Alaska · 501 days ago · 19 km deep · 86 km away
  52. 2.760 km SSE of Atka, Alaska · 500 days ago · 35 km deep · 56 km away
  53. 1.894 km SW of Atka, Alaska · 500 days ago · 18 km deep · 64 km away
  54. 2.918 km SW of Atka, Alaska · 499 days ago · 6 km deep · 85 km away
  55. 2.489 km SSE of Atka, Alaska · 499 days ago · 16 km deep · 63 km away
  56. 3.577 km SE of Atka, Alaska · 497 days ago · 35 km deep · 77 km away
  57. 2.395 km S of Atka, Alaska · 497 days ago · 2 km deep · 8 km away
  58. 2.9184 km S of Atka, Alaska · 496 days ago · 10 km deep · 84 km away
  59. 2.943 km S of Atka, Alaska · 495 days ago · 67 km deep · 57 km away
  60. 1.722 km SSW of Atka, Alaska · 495 days ago · 10 km deep · 79 km away

The first 60 of 91.

Before

  1. 1.845 km SW of Atka, Alaska · 532 days ago · 57 km deep · 78 km away
  2. 2.584 km ESE of Adak, Alaska · 533 days ago · 35 km deep · 88 km away
  3. 2.682 km WSW of Atka, Alaska · 533 days ago · 81 km deep · 94 km away
  4. 2.113 km WSW of Atka, Alaska · 533 days ago · 10 km deep · 96 km away
  5. 2.815 km SW of Atka, Alaska · 534 days ago · 10 km deep · 88 km away
  6. 3.592 km SSE of Atka, Alaska · 537 days ago · 35 km deep · 65 km away
  7. 3.296 km SE of Atka, Alaska · 538 days ago · 34 km deep · 86 km away
  8. 1.985 km ESE of Adak, Alaska · 538 days ago · 24 km deep · 86 km away
  9. 2.150 km S of Atka, Alaska · 538 days ago · 2 km deep · 52 km away
  10. 2.581 km SSE of Atka, Alaska · 539 days ago · 10 km deep · 59 km away
  11. 1.929 km SE of Atka, Alaska · 539 days ago · 67 km deep · 81 km away
  12. 1.941 km ESE of Atka, Alaska · 539 days ago · 63 km deep · 96 km away
  13. 1.896 km S of Atka, Alaska · 539 days ago · 2 km deep · 5 km away
  14. 3.694 km SW of Atka, Alaska · 540 days ago · 35 km deep · 71 km away
  15. 1.786 km WSW of Atka, Alaska · 540 days ago · 83 km deep · 93 km away
  16. 1.912 km WSW of Atka, Alaska · 540 days ago · 8 km deep · 94 km away
  17. 2.013 km WSW of Atka, Alaska · 540 days ago · 5 km deep · 94 km away
  18. 2.2169 km SE of Adak, Alaska · 542 days ago · 19 km deep · 77 km away
  19. 1.980 km SSE of Atka, Alaska · 542 days ago · 26 km deep · 51 km away
  20. 1.791 km SW of Atka, Alaska · 542 days ago · 25 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000q741 (also filed as ak0254yr0gtu). Read Fri, Oct 2, 2026, 1:18 AM UTC.