Alaska earthquakes

M1.8 earthquake 161 km W of Adak, Alaska

A magnitude 1.8 earthquake struck 161 km W of Adak, Alaska on Wed, Mar 8, 2023, 4:17 PM HAST (02:17 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.6 134 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
1.8 (ml), micro
Local time
UTC
2023-03-09 02:17:37 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
51.974° N, 178.973° 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 11.3 km horizontally, 56.2 km in depth
Magnitude uncertainty
±0.30
Depth from
Operator assigned
Station coverage gap
343°, poorly surrounded by stations
Stations used
4

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.8102 km W of Adak, Alaska · 1301 days ago · 6 km deep · 59 km away
  2. 1.9102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 60 km away
  3. 1.597 km W of Adak, Alaska · 1301 days ago · -2 km deep · 64 km away
  4. 1.8102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  5. 1.6101 km W of Adak, Alaska · 1301 days ago · 5 km deep · 61 km away
  6. 2.8104 km W of Adak, Alaska · 1301 days ago · 5 km deep · 56 km away
  7. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 5 km deep · 58 km away
  8. 3.0104 km W of Adak, Alaska · 1301 days ago · 5 km deep · 57 km away
  9. 2.394 km W of Adak, Alaska · 1301 days ago · 6 km deep · 68 km away
  10. 2.0104 km W of Adak, Alaska · 1301 days ago · 6 km deep · 58 km away
  11. 2.1103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  12. 1.999 km W of Adak, Alaska · 1301 days ago · 5 km deep · 63 km away
  13. 1.698 km W of Adak, Alaska · 1301 days ago · 4 km deep · 63 km away
  14. 1.8101 km W of Adak, Alaska · 1301 days ago · 11 km deep · 61 km away
  15. 1.9103 km W of Adak, Alaska · 1301 days ago · 6 km deep · 60 km away
  16. 1.7102 km W of Adak, Alaska · 1301 days ago · 4 km deep · 59 km away
  17. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 3 km deep · 62 km away
  18. 2.1103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  19. 1.694 km W of Adak, Alaska · 1301 days ago · 5 km deep · 68 km away
  20. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 5 km deep · 68 km away
  21. 4.4Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 5 km deep · 66 km away
  22. 3.394 km W of Adak, Alaska · 1301 days ago · 5 km deep · 67 km away
  23. 2.093 km W of Adak, Alaska · 1301 days ago · 4 km deep · 69 km away
  24. 1.890 km W of Adak, Alaska · 1301 days ago · 9 km deep · 71 km away
  25. 1.8103 km W of Adak, Alaska · 1301 days ago · 6 km deep · 58 km away
  26. 2.1100 km W of Adak, Alaska · 1301 days ago · 4 km deep · 62 km away
  27. 1.894 km W of Adak, Alaska · 1301 days ago · 6 km deep · 67 km away
  28. 2.995 km W of Adak, Alaska · 1301 days ago · 10 km deep · 66 km away
  29. 3.492 km W of Adak, Alaska · 1301 days ago · 5 km deep · 70 km away
  30. 3.094 km W of Adak, Alaska · 1301 days ago · 5 km deep · 68 km away
  31. 1.693 km W of Adak, Alaska · 1301 days ago · 6 km deep · 69 km away
  32. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 5 km deep · 64 km away
  33. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 5 km deep · 63 km away
  34. 1.9101 km W of Adak, Alaska · 1301 days ago · 3 km deep · 60 km away
  35. 1.894 km W of Adak, Alaska · 1301 days ago · 6 km deep · 68 km away
  36. 2.090 km W of Adak, Alaska · 1301 days ago · 4 km deep · 71 km away
  37. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 6 km deep · 70 km away
  38. 2.1103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 58 km away
  39. 2.194 km W of Adak, Alaska · 1301 days ago · 6 km deep · 67 km away
  40. 2.0102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  41. 1.9101 km W of Adak, Alaska · 1301 days ago · 3 km deep · 61 km away
  42. 1.8101 km W of Adak, Alaska · 1301 days ago · 4 km deep · 61 km away
  43. 2.5103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 57 km away
  44. 1.9102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 60 km away
  45. 2.3105 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  46. 1.798 km W of Adak, Alaska · 1301 days ago · 3 km deep · 63 km away
  47. 1.8101 km W of Adak, Alaska · 1301 days ago · 2 km deep · 60 km away
  48. 1.596 km W of Adak, Alaska · 1301 days ago · 4 km deep · 66 km away
  49. 2.1102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  50. 1.7102 km W of Adak, Alaska · 1301 days ago · 4 km deep · 60 km away
  51. 2.0100 km W of Adak, Alaska · 1301 days ago · 3 km deep · 62 km away
  52. 1.695 km W of Adak, Alaska · 1301 days ago · 4 km deep · 67 km away
  53. 1.899 km W of Adak, Alaska · 1301 days ago · 4 km deep · 63 km away
  54. 2.390 km W of Adak, Alaska · 1301 days ago · 5 km deep · 71 km away
  55. 3.193 km W of Adak, Alaska · 1301 days ago · 5 km deep · 68 km away
  56. 3.497 km W of Adak, Alaska · 1301 days ago · 9 km deep · 64 km away
  57. 2.193 km W of Adak, Alaska · 1301 days ago · 5 km deep · 68 km away
  58. 2.693 km W of Adak, Alaska · 1301 days ago · 9 km deep · 68 km away
  59. 2.498 km W of Adak, Alaska · 1301 days ago · -2 km deep · 64 km away
  60. 1.593 km W of Adak, Alaska · 1301 days ago · 3 km deep · 69 km away

The first 60 of at least 201.

Before

  1. 1.996 km W of Adak, Alaska · 1301 days ago · 4 km deep · 65 km away
  2. 2.1103 km W of Adak, Alaska · 1301 days ago · 4 km deep · 59 km away
  3. 2.8103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 58 km away
  4. 1.6101 km W of Adak, Alaska · 1301 days ago · 4 km deep · 60 km away
  5. 1.6101 km W of Adak, Alaska · 1301 days ago · 3 km deep · 61 km away
  6. 2.1109 km W of Adak, Alaska · 1301 days ago · 5 km deep · 52 km away
  7. 1.997 km W of Adak, Alaska · 1301 days ago · 4 km deep · 64 km away
  8. 1.7101 km W of Adak, Alaska · 1301 days ago · 6 km deep · 61 km away
  9. 3.0104 km W of Adak, Alaska · 1301 days ago · 5 km deep · 57 km away
  10. 1.9103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  11. 1.9103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 58 km away
  12. 1.6101 km W of Adak, Alaska · 1301 days ago · 4 km deep · 60 km away
  13. 1.9103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  14. 1.998 km W of Adak, Alaska · 1301 days ago · 4 km deep · 63 km away
  15. 2.2102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 60 km away
  16. 1.9104 km W of Adak, Alaska · 1301 days ago · 3 km deep · 57 km away
  17. 2.1102 km W of Adak, Alaska · 1301 days ago · 4 km deep · 60 km away
  18. 2.2101 km W of Adak, Alaska · 1301 days ago · 4 km deep · 60 km away
  19. 1.9102 km W of Adak, Alaska · 1301 days ago · 5 km deep · 59 km away
  20. 2.7103 km W of Adak, Alaska · 1301 days ago · 5 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91790796. Read Wed, Sep 30, 2026, 5:16 AM UTC.