Alaska earthquakes

M1.9 earthquake 39 km SW of Unalaska, Alaska

A magnitude 1.9 earthquake struck 39 km SW of Unalaska, Alaska on Mon, Oct 9, 2023, 10:03 AM AKDT (18:03 UTC), 75 km (46 mi) below the surface.

A larger quake followed: M5.6 122 km ESE of Nikolski, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2023-10-09 18:03:33 UTC
Depth
74.8 km (46.5 mi), intermediate-depth
Epicenter
53.598° N, 166.920° 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.

Stations used
17

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 2.1Fox Islands, Aleutian Islands, Alaska · 1085 days ago · 57 km deep · 57 km away
  2. 4.277 km SSW of Unalaska, Alaska · 1083 days ago · 47 km deep · 43 km away
  3. 2.962 km SSE of Unalaska, Alaska · 1083 days ago · 27 km deep · 61 km away
  4. 2.9103 km E of Nikolski, Alaska · 1082 days ago · 35 km deep · 86 km away
  5. 2.188 km SSW of Unalaska, Alaska · 1082 days ago · 4 km deep · 52 km away
  6. 2.0Fox Islands, Aleutian Islands, Alaska · 1081 days ago · 47 km deep · 89 km away
  7. 2.759 km SW of Unalaska, Alaska · 1079 days ago · 104 km deep · 20 km away
  8. 4.367 km SSE of Akutan, Alaska · 1078 days ago · 47 km deep · 98 km away
  9. 2.879 km S of Unalaska, Alaska · 1078 days ago · 35 km deep · 50 km away
  10. 3.071 km SSE of Akutan, Alaska · 1078 days ago · 35 km deep · 98 km away
  11. 3.444 km SW of Unalaska, Alaska · 1077 days ago · 80 km deep · 10 km away
  12. 2.064 km SSE of Akutan, Alaska · 1077 days ago · 49 km deep · 96 km away
  13. 3.369 km SSW of Unalaska, Alaska · 1075 days ago · 52 km deep · 39 km away
  14. 2.969 km SE of Unalaska, Alaska · 1075 days ago · 35 km deep · 77 km away
  15. 2.8127 km S of Unalaska, Alaska · 1075 days ago · 10 km deep · 96 km away
  16. 2.791 km SE of Unalaska, Alaska · 1075 days ago · 35 km deep · 92 km away
  17. 2.14 km SW of Unalaska, Alaska · 1074 days ago · 88 km deep · 36 km away
  18. 1.991 km W of Dutch Harbor, Alaska · 1074 days ago · 16 km deep · 75 km away
  19. 1.888 km E of Nikolski, Alaska · 1074 days ago · 58 km deep · 75 km away
  20. 3.489 km S of Unalaska, Alaska · 1074 days ago · 35 km deep · 58 km away
  21. 1.891 km W of Dutch Harbor, Alaska · 1073 days ago · 6 km deep · 75 km away
  22. 1.793 km W of Dutch Harbor, Alaska · 1073 days ago · 6 km deep · 77 km away
  23. 1.7Fox Islands, Aleutian Islands, Alaska · 1072 days ago · 1 km deep · 73 km away
  24. 1.590 km W of Dutch Harbor, Alaska · 1072 days ago · 3 km deep · 73 km away
  25. 1.994 km W of Dutch Harbor, Alaska · 1072 days ago · 8 km deep · 78 km away
  26. 2.091 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 75 km away
  27. 1.792 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 76 km away
  28. 1.892 km W of Dutch Harbor, Alaska · 1072 days ago · 7 km deep · 76 km away
  29. 1.692 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 76 km away
  30. 3.195 km W of Dutch Harbor, Alaska · 1072 days ago · 13 km deep · 82 km away
  31. 3.195 km W of Dutch Harbor, Alaska · 1072 days ago · 13 km deep · 82 km away
  32. 1.792 km W of Dutch Harbor, Alaska · 1072 days ago · 7 km deep · 76 km away
  33. 1.893 km W of Dutch Harbor, Alaska · 1072 days ago · 8 km deep · 77 km away
  34. 1.591 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 75 km away
  35. 1.5Fox Islands, Aleutian Islands, Alaska · 1072 days ago · 7 km deep · 76 km away
  36. 1.690 km W of Dutch Harbor, Alaska · 1072 days ago · 4 km deep · 74 km away
  37. 2.093 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 76 km away
  38. 2.1Fox Islands, Aleutian Islands, Alaska · 1072 days ago · 6 km deep · 75 km away
  39. 3.097 km W of Dutch Harbor, Alaska · 1072 days ago · 12 km deep · 84 km away
  40. 1.992 km W of Dutch Harbor, Alaska · 1072 days ago · 5 km deep · 76 km away
  41. 1.789 km W of Dutch Harbor, Alaska · 1072 days ago · 2 km deep · 73 km away
  42. 1.993 km W of Dutch Harbor, Alaska · 1072 days ago · 8 km deep · 77 km away
  43. 1.791 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 75 km away
  44. 1.690 km W of Dutch Harbor, Alaska · 1072 days ago · 5 km deep · 74 km away
  45. 1.792 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 76 km away
  46. 2.798 km W of Dutch Harbor, Alaska · 1072 days ago · 12 km deep · 85 km away
  47. 2.598 km W of Dutch Harbor, Alaska · 1072 days ago · 13 km deep · 85 km away
  48. 1.994 km W of Dutch Harbor, Alaska · 1072 days ago · 9 km deep · 78 km away
  49. 1.692 km W of Dutch Harbor, Alaska · 1072 days ago · 7 km deep · 76 km away
  50. 1.591 km W of Dutch Harbor, Alaska · 1072 days ago · 6 km deep · 75 km away
  51. 1.994 km W of Dutch Harbor, Alaska · 1072 days ago · 9 km deep · 78 km away
  52. 1.694 km W of Dutch Harbor, Alaska · 1072 days ago · 9 km deep · 79 km away
  53. 1.693 km W of Dutch Harbor, Alaska · 1072 days ago · 8 km deep · 78 km away
  54. 1.692 km W of Dutch Harbor, Alaska · 1071 days ago · 6 km deep · 76 km away
  55. 1.592 km W of Dutch Harbor, Alaska · 1071 days ago · 6 km deep · 76 km away
  56. 1.692 km W of Dutch Harbor, Alaska · 1071 days ago · 7 km deep · 76 km away
  57. 1.694 km W of Dutch Harbor, Alaska · 1071 days ago · 8 km deep · 78 km away
  58. 1.7Fox Islands, Aleutian Islands, Alaska · 1071 days ago · 6 km deep · 76 km away
  59. 1.889 km W of Dutch Harbor, Alaska · 1071 days ago · 1 km deep · 73 km away
  60. 2.993 km S of Unalaska, Alaska · 1071 days ago · 35 km deep · 65 km away

The first 60 of at least 201.

Before

  1. 2.068 km S of Unalaska, Alaska · 1088 days ago · 51 km deep · 53 km away
  2. 2.776 km E of Nikolski, Alaska · 1088 days ago · 35 km deep · 90 km away
  3. 2.675 km SE of Unalaska, Alaska · 1089 days ago · 26 km deep · 86 km away
  4. 2.0Fox Islands, Aleutian Islands, Alaska · 1090 days ago · 70 km deep · 84 km away
  5. 1.879 km S of Unalaska, Alaska · 1090 days ago · 46 km deep · 56 km away
  6. 2.157 km SW of Unalaska, Alaska · 1091 days ago · 7 km deep · 22 km away
  7. 2.740 km S of Akutan, Alaska · 1091 days ago · 69 km deep · 84 km away
  8. 1.844 km SSW of Unalaska, Alaska · 1092 days ago · 55 km deep · 8 km away
  9. 4.396 km S of Unalaska, Alaska · 1092 days ago · 10 km deep · 67 km away
  10. 1.950 km S of Akutan, Alaska · 1096 days ago · 59 km deep · 72 km away
  11. 1.6Fox Islands, Aleutian Islands, Alaska · 1097 days ago · 33 km deep · 48 km away
  12. 1.83 km SE of Unalaska, Alaska · 1097 days ago · 5 km deep · 40 km away
  13. 2.174 km SW of Unalaska, Alaska · 1097 days ago · 13 km deep · 36 km away
  14. 1.676 km SE of Unalaska, Alaska · 1098 days ago · 15 km deep · 84 km away
  15. 1.758 km ENE of Nikolski, Alaska · 1098 days ago · 10 km deep · 92 km away
  16. 1.671 km SE of Unalaska, Alaska · 1098 days ago · 22 km deep · 80 km away
  17. 1.671 km SE of Unalaska, Alaska · 1098 days ago · 26 km deep · 79 km away
  18. 1.968 km SE of Unalaska, Alaska · 1098 days ago · 39 km deep · 76 km away
  19. 1.678 km SE of Unalaska, Alaska · 1098 days ago · 14 km deep · 78 km away
  20. 1.687 km SSW of Unalaska, Alaska · 1098 days ago · 34 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak023cyoaduy. Read Mon, Sep 28, 2026, 5:55 PM UTC.