Alaska earthquakes

M1.5 earthquake 91 km W of Adak, Alaska

A magnitude 1.5 earthquake struck 91 km W of Adak, Alaska on Thu, Feb 16, 2023, 8:36 PM HAST (06:36 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M5.0 121 km WSW 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
1.5 (ml), micro
Local time
UTC
2023-02-17 06:36:54 UTC
Depth
3.3 km (2.1 mi), shallow
Epicenter
51.856° N, 177.958° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

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 0.6 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
135°
Stations used
6

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 99 in the 30 days before it.

After

  1. 1.691 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  2. 1.690 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  3. 2.191 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  4. 2.190 km W of Adak, Alaska · 1321 days ago · 5 km deep · 2 km away
  5. 2.390 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  6. 3.590 km W of Adak, Alaska · 1321 days ago · 11 km deep · 4 km away
  7. 2.290 km W of Adak, Alaska · 1321 days ago · 7 km deep · 2 km away
  8. 2.190 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  9. 2.090 km W of Adak, Alaska · 1321 days ago · 5 km deep · 1 km away
  10. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 7 km deep · 1 km away
  11. 2.889 km W of Adak, Alaska · 1321 days ago · 9 km deep · 6 km away
  12. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 3 km deep · 2 km away
  13. 2.291 km W of Adak, Alaska · 1321 days ago · 5 km deep · 2 km away
  14. 2.190 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  15. 1.789 km W of Adak, Alaska · 1321 days ago · 3 km deep · 1 km away
  16. 2.490 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  17. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 8 km deep · 8 km away
  18. 2.090 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  19. 1.591 km W of Adak, Alaska · 1321 days ago · -2 km deep · 0 km away
  20. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · -2 km deep · 0 km away
  21. 2.191 km W of Adak, Alaska · 1321 days ago · 7 km deep · 1 km away
  22. 1.891 km W of Adak, Alaska · 1321 days ago · 6 km deep · 2 km away
  23. 1.891 km W of Adak, Alaska · 1321 days ago · 7 km deep · 1 km away
  24. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 6 km deep · 1 km away
  25. 2.3Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 6 km deep · 1 km away
  26. 1.890 km W of Adak, Alaska · 1321 days ago · 5 km deep · 3 km away
  27. 1.691 km W of Adak, Alaska · 1321 days ago · 3 km deep · 0 km away
  28. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1321 days ago · 6 km deep · 2 km away
  29. 2.090 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  30. 2.089 km W of Adak, Alaska · 1321 days ago · 5 km deep · 2 km away
  31. 1.891 km W of Adak, Alaska · 1321 days ago · 6 km deep · 2 km away
  32. 1.589 km W of Adak, Alaska · 1321 days ago · 3 km deep · 1 km away
  33. 2.190 km W of Adak, Alaska · 1321 days ago · 5 km deep · 2 km away
  34. 2.089 km W of Adak, Alaska · 1321 days ago · 6 km deep · 2 km away
  35. 2.188 km W of Adak, Alaska · 1321 days ago · 5 km deep · 4 km away
  36. 1.691 km W of Adak, Alaska · 1321 days ago · 3 km deep · 1 km away
  37. 2.190 km W of Adak, Alaska · 1321 days ago · 6 km deep · 2 km away
  38. 2.089 km W of Adak, Alaska · 1321 days ago · 5 km deep · 2 km away
  39. 2.091 km W of Adak, Alaska · 1321 days ago · 7 km deep · 1 km away
  40. 2.290 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  41. 1.690 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  42. 1.591 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  43. 2.0114 km WSW of Adak, Alaska · 1321 days ago · 22 km deep · 45 km away
  44. 1.891 km W of Adak, Alaska · 1321 days ago · 5 km deep · 0 km away
  45. 1.890 km W of Adak, Alaska · 1321 days ago · 6 km deep · 1 km away
  46. 1.891 km W of Adak, Alaska · 1320 days ago · 9 km deep · 1 km away
  47. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1320 days ago · 5 km deep · 1 km away
  48. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1320 days ago · 21 km deep · 51 km away
  49. 1.889 km W of Adak, Alaska · 1320 days ago · 4 km deep · 2 km away
  50. 2.093 km W of Adak, Alaska · 1320 days ago · 5 km deep · 3 km away
  51. 1.793 km W of Adak, Alaska · 1320 days ago · 5 km deep · 2 km away
  52. 2.197 km W of Adak, Alaska · 1320 days ago · 4 km deep · 6 km away
  53. 2.293 km W of Adak, Alaska · 1320 days ago · 6 km deep · 2 km away
  54. 3.1Andreanof Islands, Aleutian Islands, Alaska · 1320 days ago · 9 km deep · 3 km away
  55. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1320 days ago · 4 km deep · 3 km away
  56. 2.093 km W of Adak, Alaska · 1320 days ago · 6 km deep · 2 km away
  57. 1.992 km W of Adak, Alaska · 1320 days ago · 6 km deep · 1 km away
  58. 1.994 km W of Adak, Alaska · 1320 days ago · 6 km deep · 3 km away
  59. 1.593 km W of Adak, Alaska · 1320 days ago · 4 km deep · 2 km away
  60. 1.693 km W of Adak, Alaska · 1320 days ago · 3 km deep · 2 km away

The first 60 of at least 201.

Before

  1. 1.692 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  2. 2.391 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  3. 1.691 km W of Adak, Alaska · 1321 days ago · -2 km deep · 0 km away
  4. 2.290 km W of Adak, Alaska · 1321 days ago · 3 km deep · 1 km away
  5. 2.290 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  6. 3.192 km W of Adak, Alaska · 1321 days ago · 4 km deep · 4 km away
  7. 1.791 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  8. 2.190 km W of Adak, Alaska · 1321 days ago · 4 km deep · 1 km away
  9. 1.991 km W of Adak, Alaska · 1321 days ago · 4 km deep · 0 km away
  10. 1.591 km W of Adak, Alaska · 1321 days ago · 3 km deep · 0 km away
  11. 3.375 km WSW of Adak, Alaska · 1321 days ago · 97 km deep · 34 km away
  12. 3.191 km W of Adak, Alaska · 1322 days ago · 11 km deep · 15 km away
  13. 3.175 km SSW of Adak, Alaska · 1325 days ago · 35 km deep · 91 km away
  14. 2.695 km W of Adak, Alaska · 1325 days ago · 10 km deep · 8 km away
  15. 3.1110 km SW of Adak, Alaska · 1325 days ago · 35 km deep · 77 km away
  16. 2.775 km SSW of Adak, Alaska · 1326 days ago · 32 km deep · 89 km away
  17. 1.9146 km WSW of Adak, Alaska · 1326 days ago · 21 km deep · 82 km away
  18. 2.1124 km WSW of Adak, Alaska · 1326 days ago · 25 km deep · 52 km away
  19. 2.192 km W of Adak, Alaska · 1326 days ago · 9 km deep · 2 km away
  20. 2.794 km W of Adak, Alaska · 1326 days ago · 11 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91763921. Read Wed, Sep 30, 2026, 5:54 AM UTC.