Alaska earthquakes

M2.5 earthquake 97 km ESE of Adak, Alaska

A magnitude 2.5 earthquake struck 97 km ESE of Adak, Alaska on Sun, Mar 30, 2025, 2:25 AM HADT (11:25 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.4 71 km SSE of Adak, 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
2.5 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-03-30 11:25:13 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.587° N, 175.300° 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
2.5ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 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 3.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
221°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.647 km S of Adak, Alaska · 553 days ago · 26 km deep · 87 km away
  2. 1.718 km ESE of Adak, Alaska · 553 days ago · 73 km deep · 79 km away
  3. 1.991 km SSE of Adak, Alaska · 553 days ago · 19 km deep · 82 km away
  4. 2.171 km SSE of Adak, Alaska · 552 days ago · 21 km deep · 80 km away
  5. 1.859 km SE of Adak, Alaska · 552 days ago · 27 km deep · 49 km away
  6. 2.076 km SSE of Adak, Alaska · 552 days ago · 13 km deep · 64 km away
  7. 1.876 km SE of Adak, Alaska · 552 days ago · 20 km deep · 55 km away
  8. 1.894 km SSE of Adak, Alaska · 552 days ago · 26 km deep · 80 km away
  9. 2.898 km SSE of Adak, Alaska · 552 days ago · 10 km deep · 63 km away
  10. 2.146 km SSE of Adak, Alaska · 552 days ago · 33 km deep · 73 km away
  11. 2.7104 km SSE of Adak, Alaska · 551 days ago · 19 km deep · 89 km away
  12. 1.644 km S of Atka, Alaska · 551 days ago · 65 km deep · 71 km away
  13. 1.798 km SSE of Adak, Alaska · 551 days ago · 24 km deep · 84 km away
  14. 2.188 km SSE of Adak, Alaska · 551 days ago · 15 km deep · 79 km away
  15. 1.9106 km SSE of Adak, Alaska · 551 days ago · 26 km deep · 92 km away
  16. 3.275 km W of Atka, Alaska · 551 days ago · 109 km deep · 62 km away
  17. 2.1102 km SSE of Adak, Alaska · 551 days ago · 26 km deep · 74 km away
  18. 3.093 km SSE of Adak, Alaska · 550 days ago · 10 km deep · 79 km away
  19. 2.973 km E of Adak, Alaska · 550 days ago · 43 km deep · 41 km away
  20. 2.585 km SE of Adak, Alaska · 549 days ago · 35 km deep · 29 km away
  21. 2.065 km SW of Atka, Alaska · 548 days ago · 40 km deep · 36 km away
  22. 2.7103 km ESE of Adak, Alaska · 548 days ago · 35 km deep · 10 km away
  23. 3.883 km S of Adak, Alaska · 548 days ago · 10 km deep · 94 km away
  24. 3.375 km S of Adak, Alaska · 548 days ago · 21 km deep · 91 km away
  25. 2.890 km ESE of Adak, Alaska · 548 days ago · 35 km deep · 19 km away
  26. 3.281 km E of Adak, Alaska · 547 days ago · 78 km deep · 49 km away
  27. 2.948 km SW of Atka, Alaska · 547 days ago · 48 km deep · 55 km away
  28. 1.952 km SSE of Adak, Alaska · 547 days ago · 5 km deep · 75 km away
  29. 3.772 km SSE of Adak, Alaska · 547 days ago · 35 km deep · 77 km away
  30. 2.068 km SSE of Adak, Alaska · 547 days ago · 17 km deep · 77 km away
  31. 1.865 km SSE of Adak, Alaska · 546 days ago · 33 km deep · 72 km away
  32. 2.146 km E of Adak, Alaska · 546 days ago · 74 km deep · 53 km away
  33. 2.076 km SW of Atka, Alaska · 546 days ago · 39 km deep · 26 km away
  34. 2.971 km SSE of Adak, Alaska · 546 days ago · 35 km deep · 61 km away
  35. 2.182 km SSE of Adak, Alaska · 546 days ago · 25 km deep · 79 km away
  36. 1.988 km SSE of Adak, Alaska · 546 days ago · 18 km deep · 77 km away
  37. 1.942 km W of Atka, Alaska · 546 days ago · 82 km deep · 71 km away
  38. 2.172 km WSW of Atka, Alaska · 546 days ago · 73 km deep · 45 km away
  39. 1.984 km SSE of Adak, Alaska · 546 days ago · 18 km deep · 78 km away
  40. 2.179 km WSW of Atka, Alaska · 545 days ago · 47 km deep · 27 km away
  41. 2.081 km S of Atka, Alaska · 545 days ago · 20 km deep · 70 km away
  42. 1.791 km SW of Atka, Alaska · 545 days ago · 25 km deep · 11 km away
  43. 2.2169 km SE of Adak, Alaska · 544 days ago · 19 km deep · 96 km away
  44. 2.5106 km SSE of Adak, Alaska · 544 days ago · 10 km deep · 83 km away
  45. 1.964 km SSE of Adak, Alaska · 544 days ago · 26 km deep · 64 km away
  46. 1.763 km SSE of Adak, Alaska · 544 days ago · 33 km deep · 64 km away
  47. 1.648 km S of Adak, Alaska · 543 days ago · 34 km deep · 89 km away
  48. 1.750 km ESE of Adak, Alaska · 543 days ago · 51 km deep · 49 km away
  49. 1.863 km SE of Adak, Alaska · 543 days ago · 29 km deep · 48 km away
  50. 1.861 km SSE of Adak, Alaska · 543 days ago · 26 km deep · 66 km away
  51. 1.555 km SSE of Adak, Alaska · 543 days ago · 23 km deep · 65 km away
  52. 2.013 km WSW of Atka, Alaska · 543 days ago · 5 km deep · 89 km away
  53. 1.912 km WSW of Atka, Alaska · 543 days ago · 8 km deep · 89 km away
  54. 1.786 km WSW of Atka, Alaska · 542 days ago · 83 km deep · 32 km away
  55. 1.942 km SSE of Adak, Alaska · 542 days ago · 13 km deep · 83 km away
  56. 3.694 km SW of Atka, Alaska · 542 days ago · 35 km deep · 7 km away
  57. 2.229 km WNW of Atka, Alaska · 542 days ago · 170 km deep · 91 km away
  58. 1.896 km S of Atka, Alaska · 541 days ago · 2 km deep · 70 km away
  59. 1.993 km SSE of Adak, Alaska · 541 days ago · 13 km deep · 81 km away
  60. 3.0102 km SSE of Adak, Alaska · 541 days ago · 24 km deep · 81 km away

The first 60 of at least 199.

Before

  1. 1.645 km S of Adak, Alaska · 553 days ago · 37 km deep · 90 km away
  2. 2.286 km E of Adak, Alaska · 553 days ago · 65 km deep · 24 km away
  3. 1.647 km ENE of Adak, Alaska · 553 days ago · 5 km deep · 72 km away
  4. 1.933 km SSE of Atka, Alaska · 553 days ago · 28 km deep · 96 km away
  5. 1.873 km E of Adak, Alaska · 553 days ago · 27 km deep · 38 km away
  6. 1.847 km SSE of Adak, Alaska · 554 days ago · 26 km deep · 82 km away
  7. 1.893 km ESE of Adak, Alaska · 554 days ago · 58 km deep · 4 km away
  8. 1.684 km SSE of Adak, Alaska · 554 days ago · 26 km deep · 73 km away
  9. 1.856 km SE of Adak, Alaska · 554 days ago · 48 km deep · 47 km away
  10. 1.694 km SSE of Adak, Alaska · 554 days ago · 9 km deep · 78 km away
  11. 1.751 km SE of Adak, Alaska · 554 days ago · 41 km deep · 60 km away
  12. 1.571 km SSE of Adak, Alaska · 555 days ago · 21 km deep · 74 km away
  13. 2.256 km NE of Adak, Alaska · 555 days ago · 192 km deep · 98 km away
  14. 1.870 km SE of Adak, Alaska · 555 days ago · 23 km deep · 53 km away
  15. 1.677 km SSE of Adak, Alaska · 555 days ago · 25 km deep · 71 km away
  16. 1.874 km SSE of Adak, Alaska · 555 days ago · 20 km deep · 69 km away
  17. 3.474 km SSW of Atka, Alaska · 555 days ago · 35 km deep · 39 km away
  18. 1.965 km SE of Adak, Alaska · 555 days ago · 46 km deep · 49 km away
  19. 1.957 km SSE of Adak, Alaska · 555 days ago · 19 km deep · 66 km away
  20. 1.772 km SSE of Adak, Alaska · 555 days ago · 18 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000pud4 (also filed as ak02543dj1t9). Read Sun, Oct 4, 2026, 8:28 AM UTC.