Alaska earthquakes

M1.8 earthquake 99 km W of Adak, Alaska

A magnitude 1.8 earthquake struck 99 km W of Adak, Alaska on Thu, Mar 9, 2023, 6:04 AM HAST (16:04 UTC), -2 km (-1 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, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2023-03-09 16:04:38 UTC
Depth
-1.8 km (-1.1 mi), shallow
Epicenter
51.867° N, 178.079° 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, 1.2 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
188°, poorly surrounded by stations
Stations used
5

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 1.898 km W of Adak, Alaska · 1302 days ago · 1 km deep · 1 km away
  2. 1.598 km W of Adak, Alaska · 1302 days ago · -2 km deep · 1 km away
  3. 2.098 km W of Adak, Alaska · 1302 days ago · 5 km deep · 2 km away
  4. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1302 days ago · 5 km deep · 6 km away
  5. 1.6100 km W of Adak, Alaska · 1302 days ago · -2 km deep · 1 km away
  6. 1.698 km W of Adak, Alaska · 1302 days ago · 2 km deep · 3 km away
  7. 1.5103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  8. 1.9100 km W of Adak, Alaska · 1302 days ago · 3 km deep · 1 km away
  9. 2.6101 km W of Adak, Alaska · 1302 days ago · 5 km deep · 5 km away
  10. 1.9102 km W of Adak, Alaska · 1302 days ago · 5 km deep · 3 km away
  11. 3.9102 km W of Adak, Alaska · 1302 days ago · 5 km deep · 10 km away
  12. 1.6102 km W of Adak, Alaska · 1302 days ago · 4 km deep · 3 km away
  13. 1.9104 km W of Adak, Alaska · 1302 days ago · 5 km deep · 5 km away
  14. 1.6102 km W of Adak, Alaska · 1302 days ago · 7 km deep · 3 km away
  15. 1.9101 km W of Adak, Alaska · 1302 days ago · 8 km deep · 3 km away
  16. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1302 days ago · 5 km deep · 2 km away
  17. 1.890 km W of Adak, Alaska · 1302 days ago · 4 km deep · 9 km away
  18. 1.692 km W of Adak, Alaska · 1302 days ago · 6 km deep · 7 km away
  19. 2.2103 km W of Adak, Alaska · 1302 days ago · 9 km deep · 4 km away
  20. 1.5100 km W of Adak, Alaska · 1302 days ago · 4 km deep · 2 km away
  21. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1302 days ago · 26 km deep · 49 km away
  22. 1.592 km W of Adak, Alaska · 1302 days ago · 5 km deep · 8 km away
  23. 1.7103 km W of Adak, Alaska · 1302 days ago · 7 km deep · 4 km away
  24. 1.6102 km W of Adak, Alaska · 1302 days ago · 7 km deep · 3 km away
  25. 2.290 km W of Adak, Alaska · 1302 days ago · 4 km deep · 10 km away
  26. 2.0103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  27. 1.798 km W of Adak, Alaska · 1302 days ago · 10 km deep · 3 km away
  28. 1.8103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  29. 2.1103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  30. 1.798 km W of Adak, Alaska · 1302 days ago · -2 km deep · 2 km away
  31. 1.691 km W of Adak, Alaska · 1302 days ago · 5 km deep · 8 km away
  32. 1.6101 km W of Adak, Alaska · 1302 days ago · 3 km deep · 2 km away
  33. 2.091 km W of Adak, Alaska · 1302 days ago · 4 km deep · 9 km away
  34. 2.5103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  35. 1.992 km W of Adak, Alaska · 1302 days ago · 6 km deep · 7 km away
  36. 1.992 km W of Adak, Alaska · 1302 days ago · 6 km deep · 7 km away
  37. 2.2103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  38. 1.6102 km W of Adak, Alaska · 1302 days ago · 6 km deep · 3 km away
  39. 2.1101 km W of Adak, Alaska · 1302 days ago · 4 km deep · 2 km away
  40. 1.8103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  41. 2.8103 km W of Adak, Alaska · 1302 days ago · 9 km deep · 9 km away
  42. 2.0101 km W of Adak, Alaska · 1302 days ago · 5 km deep · 2 km away
  43. 2.090 km W of Adak, Alaska · 1302 days ago · 3 km deep · 9 km away
  44. 2.1101 km W of Adak, Alaska · 1302 days ago · 6 km deep · 2 km away
  45. 2.1103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  46. 1.8100 km W of Adak, Alaska · 1302 days ago · 5 km deep · 1 km away
  47. 1.897 km W of Adak, Alaska · 1302 days ago · -2 km deep · 2 km away
  48. 2.395 km W of Adak, Alaska · 1302 days ago · 3 km deep · 5 km away
  49. 1.7101 km W of Adak, Alaska · 1302 days ago · -2 km deep · 2 km away
  50. 2.0104 km W of Adak, Alaska · 1302 days ago · 4 km deep · 5 km away
  51. 2.2103 km W of Adak, Alaska · 1302 days ago · 6 km deep · 4 km away
  52. 2.194 km W of Adak, Alaska · 1302 days ago · 4 km deep · 5 km away
  53. 2.193 km W of Adak, Alaska · 1302 days ago · 3 km deep · 6 km away
  54. 1.797 km W of Adak, Alaska · 1302 days ago · 1 km deep · 2 km away
  55. 1.994 km W of Adak, Alaska · 1302 days ago · 2 km deep · 5 km away
  56. 1.8100 km W of Adak, Alaska · 1302 days ago · 3 km deep · 2 km away
  57. 2.0103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  58. 1.5102 km W of Adak, Alaska · 1302 days ago · 5 km deep · 3 km away
  59. 2.2103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  60. 1.7100 km W of Adak, Alaska · 1302 days ago · 4 km deep · 1 km away

The first 60 of at least 202.

Before

  1. 1.798 km W of Adak, Alaska · 1302 days ago · -2 km deep · 2 km away
  2. 1.9102 km W of Adak, Alaska · 1302 days ago · 4 km deep · 3 km away
  3. 1.599 km W of Adak, Alaska · 1302 days ago · 4 km deep · 0 km away
  4. 2.1100 km W of Adak, Alaska · 1302 days ago · 4 km deep · 1 km away
  5. 2.2102 km W of Adak, Alaska · 1302 days ago · 5 km deep · 3 km away
  6. 1.9101 km W of Adak, Alaska · 1302 days ago · 5 km deep · 2 km away
  7. 1.8102 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  8. 2.8104 km W of Adak, Alaska · 1302 days ago · 5 km deep · 12 km away
  9. 1.6102 km W of Adak, Alaska · 1302 days ago · 6 km deep · 3 km away
  10. 2.2103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 4 km away
  11. 2.1102 km W of Adak, Alaska · 1302 days ago · 6 km deep · 3 km away
  12. 1.9103 km W of Adak, Alaska · 1302 days ago · 8 km deep · 4 km away
  13. 1.8102 km W of Adak, Alaska · 1302 days ago · 6 km deep · 3 km away
  14. 2.1105 km W of Adak, Alaska · 1302 days ago · 5 km deep · 6 km away
  15. 2.1104 km W of Adak, Alaska · 1302 days ago · 6 km deep · 5 km away
  16. 2.5103 km W of Adak, Alaska · 1302 days ago · 5 km deep · 19 km away
  17. 1.8100 km W of Adak, Alaska · 1302 days ago · 3 km deep · 1 km away
  18. 1.9101 km W of Adak, Alaska · 1302 days ago · 6 km deep · 2 km away
  19. 1.7102 km W of Adak, Alaska · 1302 days ago · 8 km deep · 4 km away
  20. 1.7102 km W of Adak, Alaska · 1302 days ago · 6 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91792921. Read Thu, Oct 1, 2026, 6:28 PM UTC.