Alaska earthquakes

M3.0 earthquake 29 km WNW of Atka, Alaska

A magnitude 3.0 earthquake struck 29 km WNW of Atka, Alaska on Mon, Apr 21, 2025, 6:27 AM HADT (15:27 UTC), 147 km (91 mi) below the surface.

A larger quake followed: M4.8 46 km E 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-04-21 15:27:35 UTC
Depth
147.2 km (91.5 mi), intermediate-depth
Epicenter
52.337° N, 174.566° 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 · ±0.097 · 14 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 30.1 km horizontally, 16.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
174°
Stations used
17

Nearby

Within 100 km, magnitude 1.5 and up: 109 in the 60 days after this one and 65 in the 30 days before it.

After

  1. 2.040 km E of Atka, Alaska · 530 days ago · 5 km deep · 68 km away
  2. 3.14 km W of Atka, Alaska · 529 days ago · 205 km deep · 26 km away
  3. 1.935 km SSW of Atka, Alaska · 529 days ago · 62 km deep · 52 km away
  4. 3.058 km NW of Atka, Alaska · 528 days ago · 184 km deep · 33 km away
  5. 1.837 km WSW of Atka, Alaska · 528 days ago · 36 km deep · 29 km away
  6. 2.987 km W of Atka, Alaska · 527 days ago · 226 km deep · 62 km away
  7. 2.057 km WSW of Atka, Alaska · 527 days ago · 74 km deep · 49 km away
  8. 4.269 km NNW of Atka, Alaska · 527 days ago · 206 km deep · 46 km away
  9. 2.297 km SW of Atka, Alaska · 527 days ago · 26 km deep · 94 km away
  10. 2.686 km E of Adak, Alaska · 525 days ago · 67 km deep · 80 km away
  11. 1.750 km W of Atka, Alaska · 525 days ago · 18 km deep · 33 km away
  12. 3.969 km N of Atka, Alaska · 525 days ago · 195 km deep · 54 km away
  13. 2.857 km WSW of Atka, Alaska · 523 days ago · 70 km deep · 48 km away
  14. 1.730 km WNW of Atka, Alaska · 521 days ago · 14 km deep · 10 km away
  15. 3.042 km SE of Atka, Alaska · 519 days ago · 10 km deep · 71 km away
  16. 2.051 km S of Atka, Alaska · 519 days ago · 35 km deep · 68 km away
  17. 3.453 km WSW of Atka, Alaska · 517 days ago · 82 km deep · 41 km away
  18. 2.062 km SW of Atka, Alaska · 517 days ago · 49 km deep · 62 km away
  19. 2.848 km SSE of Atka, Alaska · 516 days ago · 81 km deep · 75 km away
  20. 2.175 km SW of Atka, Alaska · 515 days ago · 26 km deep · 78 km away
  21. 3.774 km SW of Atka, Alaska · 513 days ago · 35 km deep · 77 km away
  22. 3.038 km NNE of Atka, Alaska · 511 days ago · 146 km deep · 49 km away
  23. 1.848 km W of Atka, Alaska · 511 days ago · 78 km deep · 30 km away
  24. 1.731 km SE of Atka, Alaska · 511 days ago · 6 km deep · 61 km away
  25. 2.944 km SSE of Atka, Alaska · 510 days ago · 19 km deep · 69 km away
  26. 4.162 km WSW of Atka, Alaska · 509 days ago · 75 km deep · 46 km away
  27. 1.967 km SW of Atka, Alaska · 508 days ago · 47 km deep · 64 km away
  28. 2.344 km SE of Atka, Alaska · 508 days ago · 24 km deep · 73 km away
  29. 1.724 km WSW of Atka, Alaska · 507 days ago · 25 km deep · 27 km away
  30. 3.139 km SE of Atka, Alaska · 507 days ago · 14 km deep · 69 km away
  31. 3.026 km E of Atka, Alaska · 507 days ago · 85 km deep · 55 km away
  32. 2.031 km S of Atka, Alaska · 506 days ago · 84 km deep · 50 km away
  33. 2.771 km ENE of Atka, Alaska · 505 days ago · 9 km deep · 94 km away
  34. 2.084 km ENE of Adak, Alaska · 505 days ago · 99 km deep · 67 km away
  35. 2.531 km NNE of Atka, Alaska · 505 days ago · 168 km deep · 39 km away
  36. 1.684 km E of Adak, Alaska · 504 days ago · 77 km deep · 71 km away
  37. 2.865 km E of Atka, Alaska · 504 days ago · 116 km deep · 91 km away
  38. 1.680 km ENE of Adak, Alaska · 504 days ago · 73 km deep · 72 km away
  39. 2.263 km NE of Adak, Alaska · 503 days ago · 192 km deep · 95 km away
  40. 2.136 km ESE of Atka, Alaska · 503 days ago · 7 km deep · 65 km away
  41. 2.396 km WNW of Atka, Alaska · 503 days ago · 220 km deep · 67 km away
  42. 2.760 km SSE of Atka, Alaska · 502 days ago · 35 km deep · 87 km away
  43. 2.923 km NW of Atka, Alaska · 502 days ago · 206 km deep · 9 km away
  44. 1.894 km SW of Atka, Alaska · 502 days ago · 18 km deep · 92 km away
  45. 2.918 km SW of Atka, Alaska · 502 days ago · 6 km deep · 34 km away
  46. 3.074 km E of Atka, Alaska · 501 days ago · 10 km deep · 99 km away
  47. 3.170 km E of Atka, Alaska · 501 days ago · 8 km deep · 97 km away
  48. 3.163 km E of Atka, Alaska · 500 days ago · 104 km deep · 90 km away
  49. 2.259 km ESE of Atka, Alaska · 499 days ago · 52 km deep · 88 km away
  50. 3.018 km WNW of Atka, Alaska · 497 days ago · 194 km deep · 11 km away
  51. 2.943 km S of Atka, Alaska · 497 days ago · 67 km deep · 61 km away
  52. 1.722 km SSW of Atka, Alaska · 497 days ago · 10 km deep · 40 km away
  53. 1.969 km SW of Atka, Alaska · 495 days ago · 23 km deep · 66 km away
  54. 3.130 km N of Atka, Alaska · 495 days ago · 142 km deep · 24 km away
  55. 1.952 km ESE of Atka, Alaska · 494 days ago · 55 km deep · 81 km away
  56. 3.231 km WNW of Atka, Alaska · 493 days ago · 213 km deep · 10 km away
  57. 2.052 km S of Atka, Alaska · 493 days ago · 42 km deep · 69 km away
  58. 2.948 km ENE of Atka, Alaska · 493 days ago · 129 km deep · 66 km away
  59. 3.169 km SSE of Atka, Alaska · 493 days ago · 35 km deep · 96 km away
  60. 2.949 km ENE of Atka, Alaska · 492 days ago · 10 km deep · 70 km away

The first 60 of 109.

Before

  1. 1.720 km WSW of Atka, Alaska · 532 days ago · 21 km deep · 26 km away
  2. 2.838 km S of Atka, Alaska · 533 days ago · 71 km deep · 62 km away
  3. 2.826 km S of Atka, Alaska · 533 days ago · 10 km deep · 49 km away
  4. 2.967 km W of Atka, Alaska · 533 days ago · 201 km deep · 44 km away
  5. 2.554 km SSW of Atka, Alaska · 534 days ago · 35 km deep · 66 km away
  6. 1.845 km SW of Atka, Alaska · 534 days ago · 57 km deep · 43 km away
  7. 3.453 km E of Atka, Alaska · 534 days ago · 59 km deep · 79 km away
  8. 3.915 km WNW of Atka, Alaska · 535 days ago · 225 km deep · 14 km away
  9. 2.682 km WSW of Atka, Alaska · 535 days ago · 81 km deep · 70 km away
  10. 2.113 km WSW of Atka, Alaska · 536 days ago · 10 km deep · 23 km away
  11. 2.815 km SW of Atka, Alaska · 536 days ago · 10 km deep · 31 km away
  12. 3.168 km N of Atka, Alaska · 536 days ago · 164 km deep · 63 km away
  13. 2.176 km ENE of Adak, Alaska · 537 days ago · 157 km deep · 75 km away
  14. 3.465 km ENE of Adak, Alaska · 537 days ago · 169 km deep · 85 km away
  15. 2.811 km NNW of Atka, Alaska · 538 days ago · 192 km deep · 21 km away
  16. 1.839 km N of Atka, Alaska · 538 days ago · 17 km deep · 39 km away
  17. 3.219 km ENE of Atka, Alaska · 539 days ago · 121 km deep · 41 km away
  18. 2.983 km W of Atka, Alaska · 539 days ago · 125 km deep · 61 km away
  19. 2.875 km WNW of Atka, Alaska · 540 days ago · 159 km deep · 48 km away
  20. 2.150 km S of Atka, Alaska · 540 days ago · 2 km deep · 73 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000pws1 (also filed as ak02553tqvvl). Read Sun, Oct 4, 2026, 3:12 AM UTC.