Alaska earthquakes

M2.8 earthquake 98 km SSE of Adak, Alaska

A magnitude 2.8 earthquake struck 98 km SSE of Adak, Alaska on Mon, Mar 31, 2025, 12:37 AM HADT (09:37 UTC), 10 km (6 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
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-03-31 09:37:15 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.140° N, 175.851° 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
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.105 · 14 stations
2.5ML, 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 4.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
232°, poorly surrounded by stations
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 2.146 km SSE of Adak, Alaska · 550 days ago · 33 km deep · 53 km away
  2. 2.7104 km SSE of Adak, Alaska · 549 days ago · 19 km deep · 26 km away
  3. 1.798 km SSE of Adak, Alaska · 549 days ago · 24 km deep · 23 km away
  4. 2.188 km SSE of Adak, Alaska · 549 days ago · 15 km deep · 22 km away
  5. 1.9106 km SSE of Adak, Alaska · 549 days ago · 26 km deep · 29 km away
  6. 1.744 km SW of Adak, Alaska · 549 days ago · 47 km deep · 97 km away
  7. 2.1102 km SSE of Adak, Alaska · 548 days ago · 26 km deep · 12 km away
  8. 1.665 km SW of Adak, Alaska · 548 days ago · 37 km deep · 96 km away
  9. 3.093 km SSE of Adak, Alaska · 548 days ago · 10 km deep · 20 km away
  10. 2.973 km E of Adak, Alaska · 547 days ago · 43 km deep · 89 km away
  11. 2.585 km SE of Adak, Alaska · 547 days ago · 35 km deep · 36 km away
  12. 2.030 km SW of Adak, Alaska · 547 days ago · 65 km deep · 93 km away
  13. 2.065 km SW of Atka, Alaska · 546 days ago · 40 km deep · 98 km away
  14. 2.7103 km ESE of Adak, Alaska · 546 days ago · 35 km deep · 57 km away
  15. 3.883 km S of Adak, Alaska · 546 days ago · 10 km deep · 41 km away
  16. 3.375 km S of Adak, Alaska · 546 days ago · 21 km deep · 43 km away
  17. 2.890 km ESE of Adak, Alaska · 546 days ago · 35 km deep · 44 km away
  18. 2.154 km SW of Adak, Alaska · 546 days ago · 38 km deep · 98 km away
  19. 2.157 km S of Adak, Alaska · 545 days ago · 26 km deep · 65 km away
  20. 1.952 km SSE of Adak, Alaska · 544 days ago · 5 km deep · 47 km away
  21. 3.772 km SSE of Adak, Alaska · 544 days ago · 35 km deep · 33 km away
  22. 2.068 km SSE of Adak, Alaska · 544 days ago · 17 km deep · 35 km away
  23. 2.944 km SW of Adak, Alaska · 544 days ago · 68 km deep · 94 km away
  24. 1.865 km SSE of Adak, Alaska · 544 days ago · 33 km deep · 36 km away
  25. 2.146 km E of Adak, Alaska · 544 days ago · 74 km deep · 76 km away
  26. 2.076 km SW of Atka, Alaska · 544 days ago · 39 km deep · 87 km away
  27. 2.971 km SSE of Adak, Alaska · 544 days ago · 35 km deep · 26 km away
  28. 2.182 km SSE of Adak, Alaska · 544 days ago · 25 km deep · 27 km away
  29. 1.988 km SSE of Adak, Alaska · 544 days ago · 18 km deep · 20 km away
  30. 1.984 km SSE of Adak, Alaska · 543 days ago · 18 km deep · 24 km away
  31. 2.179 km WSW of Atka, Alaska · 543 days ago · 47 km deep · 89 km away
  32. 1.791 km SW of Atka, Alaska · 542 days ago · 25 km deep · 73 km away
  33. 2.567 km SSW of Adak, Alaska · 542 days ago · 35 km deep · 83 km away
  34. 2.764 km S of Adak, Alaska · 542 days ago · 22 km deep · 60 km away
  35. 2.2169 km SE of Adak, Alaska · 542 days ago · 19 km deep · 73 km away
  36. 2.5106 km SSE of Adak, Alaska · 542 days ago · 10 km deep · 21 km away
  37. 1.964 km SSE of Adak, Alaska · 541 days ago · 26 km deep · 33 km away
  38. 1.763 km SSE of Adak, Alaska · 541 days ago · 33 km deep · 35 km away
  39. 1.648 km S of Adak, Alaska · 541 days ago · 34 km deep · 60 km away
  40. 1.750 km ESE of Adak, Alaska · 541 days ago · 51 km deep · 56 km away
  41. 1.863 km SE of Adak, Alaska · 541 days ago · 29 km deep · 39 km away
  42. 1.861 km SSE of Adak, Alaska · 541 days ago · 26 km deep · 37 km away
  43. 1.555 km SSE of Adak, Alaska · 541 days ago · 23 km deep · 43 km away
  44. 1.661 km SSW of Adak, Alaska · 541 days ago · 37 km deep · 86 km away
  45. 1.715 km SSW of Adak, Alaska · 540 days ago · 78 km deep · 92 km away
  46. 1.765 km SSW of Adak, Alaska · 540 days ago · 42 km deep · 88 km away
  47. 1.729 km SSW of Adak, Alaska · 540 days ago · 70 km deep · 83 km away
  48. 1.786 km WSW of Atka, Alaska · 540 days ago · 83 km deep · 89 km away
  49. 1.942 km SSE of Adak, Alaska · 540 days ago · 13 km deep · 60 km away
  50. 3.694 km SW of Atka, Alaska · 540 days ago · 35 km deep · 70 km away
  51. 1.993 km SSE of Adak, Alaska · 539 days ago · 13 km deep · 22 km away
  52. 3.0102 km SSE of Adak, Alaska · 539 days ago · 24 km deep · 19 km away
  53. 3.363 km SE of Adak, Alaska · 539 days ago · 45 km deep · 46 km away
  54. 1.968 km S of Adak, Alaska · 538 days ago · 36 km deep · 67 km away
  55. 1.985 km ESE of Adak, Alaska · 538 days ago · 24 km deep · 44 km away
  56. 1.958 km SE of Adak, Alaska · 538 days ago · 25 km deep · 40 km away
  57. 3.294 km SSE of Adak, Alaska · 538 days ago · 10 km deep · 24 km away
  58. 2.640 km ENE of Adak, Alaska · 538 days ago · 106 km deep · 96 km away
  59. 1.935 km S of Adak, Alaska · 537 days ago · 42 km deep · 73 km away
  60. 2.147 km S of Adak, Alaska · 537 days ago · 46 km deep · 64 km away

The first 60 of 186.

Before

  1. 1.894 km SSE of Adak, Alaska · 550 days ago · 26 km deep · 20 km away
  2. 1.876 km SE of Adak, Alaska · 550 days ago · 20 km deep · 22 km away
  3. 2.076 km SSE of Adak, Alaska · 550 days ago · 13 km deep · 22 km away
  4. 1.859 km SE of Adak, Alaska · 550 days ago · 27 km deep · 42 km away
  5. 1.639 km SSW of Adak, Alaska · 550 days ago · 29 km deep · 89 km away
  6. 2.171 km SSE of Adak, Alaska · 550 days ago · 21 km deep · 36 km away
  7. 1.648 km SW of Adak, Alaska · 550 days ago · 45 km deep · 96 km away
  8. 1.739 km SSW of Adak, Alaska · 550 days ago · 43 km deep · 82 km away
  9. 1.991 km SSE of Adak, Alaska · 550 days ago · 19 km deep · 24 km away
  10. 1.718 km ESE of Adak, Alaska · 550 days ago · 73 km deep · 82 km away
  11. 1.647 km S of Adak, Alaska · 551 days ago · 26 km deep · 59 km away
  12. 2.597 km ESE of Adak, Alaska · 551 days ago · 35 km deep · 63 km away
  13. 1.645 km S of Adak, Alaska · 551 days ago · 37 km deep · 63 km away
  14. 2.286 km E of Adak, Alaska · 551 days ago · 65 km deep · 79 km away
  15. 1.873 km E of Adak, Alaska · 551 days ago · 27 km deep · 84 km away
  16. 1.847 km SSE of Adak, Alaska · 552 days ago · 26 km deep · 56 km away
  17. 1.893 km ESE of Adak, Alaska · 552 days ago · 58 km deep · 63 km away
  18. 1.684 km SSE of Adak, Alaska · 552 days ago · 26 km deep · 20 km away
  19. 1.856 km SE of Adak, Alaska · 552 days ago · 48 km deep · 48 km away
  20. 1.694 km SSE of Adak, Alaska · 552 days ago · 9 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000q76a (also filed as ak02544zy3xg). Read Fri, Oct 2, 2026, 3:46 AM UTC.