Alaska earthquakes

M1.9 earthquake 131 km S of Unalaska, Alaska

A magnitude 1.9 earthquake struck 131 km S of Unalaska, Alaska on Sun, Sep 24, 2023, 7:06 PM AKDT (03:06 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M4.3 96 km S of Unalaska, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

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
2023-09-25 03:06:23 UTC
Depth
8.5 km (5.3 mi), shallow
Epicenter
52.698° N, 166.623° 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
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 66 in the 60 days after this one and 51 in the 30 days before it.

After

  1. 3.388 km SSW of Unalaska, Alaska · 1100 days ago · 35 km deep · 52 km away
  2. 1.687 km SSW of Unalaska, Alaska · 1099 days ago · 34 km deep · 60 km away
  3. 1.678 km SE of Unalaska, Alaska · 1099 days ago · 14 km deep · 85 km away
  4. 1.968 km SE of Unalaska, Alaska · 1099 days ago · 39 km deep · 100 km away
  5. 1.671 km SE of Unalaska, Alaska · 1099 days ago · 26 km deep · 99 km away
  6. 1.676 km SE of Unalaska, Alaska · 1099 days ago · 15 km deep · 99 km away
  7. 2.174 km SW of Unalaska, Alaska · 1098 days ago · 13 km deep · 100 km away
  8. 1.6Fox Islands, Aleutian Islands, Alaska · 1097 days ago · 33 km deep · 55 km away
  9. 2.964 km ESE of Nikolski, Alaska · 1095 days ago · 35 km deep · 89 km away
  10. 4.396 km S of Unalaska, Alaska · 1093 days ago · 10 km deep · 35 km away
  11. 2.3134 km ESE of Nikolski, Alaska · 1093 days ago · 13 km deep · 39 km away
  12. 1.844 km SSW of Unalaska, Alaska · 1093 days ago · 55 km deep · 95 km away
  13. 2.364 km E of Nikolski, Alaska · 1092 days ago · 21 km deep · 88 km away
  14. 1.879 km S of Unalaska, Alaska · 1091 days ago · 46 km deep · 52 km away
  15. 2.0Fox Islands, Aleutian Islands, Alaska · 1090 days ago · 70 km deep · 70 km away
  16. 2.6142 km S of Unalaska, Alaska · 1090 days ago · 10 km deep · 11 km away
  17. 2.776 km E of Nikolski, Alaska · 1089 days ago · 35 km deep · 79 km away
  18. 2.068 km S of Unalaska, Alaska · 1089 days ago · 51 km deep · 66 km away
  19. 4.091 km SE of Nikolski, Alaska · 1087 days ago · 10 km deep · 85 km away
  20. 3.0135 km S of Unalaska, Alaska · 1087 days ago · 10 km deep · 6 km away
  21. 2.1Fox Islands, Aleutian Islands, Alaska · 1086 days ago · 57 km deep · 88 km away
  22. 2.0Fox Islands, Aleutian Islands, Alaska · 1085 days ago · 40 km deep · 43 km away
  23. 4.277 km SSW of Unalaska, Alaska · 1084 days ago · 47 km deep · 59 km away
  24. 2.0135 km S of Unalaska, Alaska · 1084 days ago · 8 km deep · 5 km away
  25. 2.962 km SSE of Unalaska, Alaska · 1084 days ago · 27 km deep · 85 km away
  26. 2.9103 km E of Nikolski, Alaska · 1082 days ago · 35 km deep · 51 km away
  27. 2.188 km SSW of Unalaska, Alaska · 1082 days ago · 4 km deep · 55 km away
  28. 2.0Fox Islands, Aleutian Islands, Alaska · 1082 days ago · 47 km deep · 50 km away
  29. 2.759 km SW of Unalaska, Alaska · 1080 days ago · 104 km deep · 92 km away
  30. 2.879 km S of Unalaska, Alaska · 1078 days ago · 35 km deep · 52 km away
  31. 3.369 km SSW of Unalaska, Alaska · 1076 days ago · 52 km deep · 63 km away
  32. 2.969 km SE of Unalaska, Alaska · 1076 days ago · 35 km deep · 98 km away
  33. 2.8127 km S of Unalaska, Alaska · 1076 days ago · 10 km deep · 11 km away
  34. 2.791 km SE of Unalaska, Alaska · 1076 days ago · 35 km deep · 85 km away
  35. 1.888 km E of Nikolski, Alaska · 1075 days ago · 58 km deep · 73 km away
  36. 3.489 km S of Unalaska, Alaska · 1075 days ago · 35 km deep · 44 km away
  37. 2.993 km S of Unalaska, Alaska · 1071 days ago · 35 km deep · 38 km away
  38. 2.791 km SSW of Unalaska, Alaska · 1070 days ago · 35 km deep · 48 km away
  39. 2.6150 km ESE of Nikolski, Alaska · 1070 days ago · 10 km deep · 29 km away
  40. 2.7141 km S of Unalaska, Alaska · 1069 days ago · 10 km deep · 10 km away
  41. 1.972 km SSW of Unalaska, Alaska · 1068 days ago · 62 km deep · 70 km away
  42. 2.082 km SSW of Unalaska, Alaska · 1068 days ago · 48 km deep · 52 km away
  43. 1.992 km SSW of Unalaska, Alaska · 1067 days ago · 64 km deep · 47 km away
  44. 2.1162 km ESE of Nikolski, Alaska · 1066 days ago · 22 km deep · 35 km away
  45. 1.5Fox Islands, Aleutian Islands, Alaska · 1066 days ago · 46 km deep · 69 km away
  46. 2.1127 km S of Unalaska, Alaska · 1065 days ago · 10 km deep · 4 km away
  47. 1.697 km E of Nikolski, Alaska · 1065 days ago · 26 km deep · 59 km away
  48. 2.8213 km SSE of Unalaska, Alaska · 1065 days ago · 10 km deep · 96 km away
  49. 2.268 km SE of Unalaska, Alaska · 1063 days ago · 48 km deep · 96 km away
  50. 2.270 km S of Unalaska, Alaska · 1063 days ago · 41 km deep · 62 km away
  51. 1.944 km S of Unalaska, Alaska · 1062 days ago · 63 km deep · 87 km away
  52. 1.8112 km S of Unalaska, Alaska · 1062 days ago · 11 km deep · 25 km away
  53. 1.8108 km E of Nikolski, Alaska · 1062 days ago · 6 km deep · 53 km away
  54. 1.872 km SSW of Unalaska, Alaska · 1062 days ago · 51 km deep · 61 km away
  55. 3.3108 km E of Nikolski, Alaska · 1060 days ago · 35 km deep · 51 km away
  56. 1.977 km S of Unalaska, Alaska · 1059 days ago · 23 km deep · 55 km away
  57. 2.884 km E of Nikolski, Alaska · 1058 days ago · 35 km deep · 69 km away
  58. 2.295 km SSW of Unalaska, Alaska · 1057 days ago · 21 km deep · 66 km away
  59. 2.881 km E of Nikolski, Alaska · 1055 days ago · 35 km deep · 78 km away
  60. 3.0104 km E of Nikolski, Alaska · 1054 days ago · 35 km deep · 49 km away

The first 60 of 66.

Before

  1. 1.9125 km S of Unalaska, Alaska · 1100 days ago · 1 km deep · 9 km away
  2. 2.0118 km S of Unalaska, Alaska · 1101 days ago · 1 km deep · 16 km away
  3. 2.159 km SSE of Unalaska, Alaska · 1101 days ago · 42 km deep · 89 km away
  4. 2.952 km SW of Unalaska, Alaska · 1101 days ago · 25 km deep · 98 km away
  5. 2.998 km SE of Unalaska, Alaska · 1101 days ago · 35 km deep · 81 km away
  6. 3.2196 km ESE of Nikolski, Alaska · 1101 days ago · 10 km deep · 75 km away
  7. 3.4207 km SE of Nikolski, Alaska · 1102 days ago · 10 km deep · 90 km away
  8. 2.3Fox Islands, Aleutian Islands, Alaska · 1104 days ago · 52 km deep · 85 km away
  9. 2.5129 km S of Unalaska, Alaska · 1105 days ago · 10 km deep · 3 km away
  10. 2.6185 km SSE of Unalaska, Alaska · 1106 days ago · 10 km deep · 72 km away
  11. 2.9south of the Aleutian Islands · 1106 days ago · 10 km deep · 79 km away
  12. 2.8Fox Islands, Aleutian Islands, Alaska · 1107 days ago · 15 km deep · 97 km away
  13. 2.586 km S of Unalaska, Alaska · 1107 days ago · 35 km deep · 45 km away
  14. 1.7Fox Islands, Aleutian Islands, Alaska · 1108 days ago · 13 km deep · 93 km away
  15. 1.978 km SSW of Unalaska, Alaska · 1111 days ago · 52 km deep · 69 km away
  16. 3.192 km SW of Unalaska, Alaska · 1111 days ago · 66 km deep · 88 km away
  17. 2.041 km SSW of Unalaska, Alaska · 1111 days ago · 66 km deep · 92 km away
  18. 1.899 km E of Nikolski, Alaska · 1112 days ago · 39 km deep · 63 km away
  19. 2.886 km SSW of Unalaska, Alaska · 1112 days ago · 35 km deep · 51 km away
  20. 1.684 km SSW of Unalaska, Alaska · 1112 days ago · 26 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak023cb9uo4d. Read Tue, Sep 29, 2026, 12:22 PM UTC.