Alaska earthquakes

M1.5 earthquake 82 km SSW of Unalaska, Alaska

A magnitude 1.5 earthquake struck 82 km SSW of Unalaska, Alaska on Mon, Jul 31, 2023, 6:17 PM AKDT (02:17 UTC), 51 km (32 mi) below the surface.

A larger quake followed: M3.7 128 km S of Unalaska, 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
1.5 (ml), micro
Local time
UTC
2023-08-01 02:17:39 UTC
Depth
51.4 km (31.9 mi), shallow
Epicenter
53.200° N, 167.033° 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
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 143 in the 60 days after this one and 98 in the 30 days before it.

After

  1. 2.973 km ENE of Nikolski, Alaska · 1156 days ago · 62 km deep · 53 km away
  2. 1.749 km SW of Unalaska, Alaska · 1156 days ago · 17 km deep · 40 km away
  3. 3.269 km SSW of Unalaska, Alaska · 1155 days ago · 58 km deep · 13 km away
  4. 2.790 km E of Nikolski, Alaska · 1155 days ago · 35 km deep · 54 km away
  5. 1.9Fox Islands, Aleutian Islands, Alaska · 1154 days ago · 57 km deep · 31 km away
  6. 2.849 km SW of Unalaska, Alaska · 1152 days ago · 25 km deep · 47 km away
  7. 2.653 km WSW of Dutch Harbor, Alaska · 1152 days ago · 114 km deep · 70 km away
  8. 1.988 km SW of Unalaska, Alaska · 1151 days ago · 66 km deep · 30 km away
  9. 3.049 km SW of Unalaska, Alaska · 1151 days ago · 27 km deep · 48 km away
  10. 1.678 km SW of Unalaska, Alaska · 1151 days ago · 16 km deep · 28 km away
  11. 2.085 km SSW of Unalaska, Alaska · 1150 days ago · 26 km deep · 15 km away
  12. 3.4118 km S of Unalaska, Alaska · 1150 days ago · 35 km deep · 45 km away
  13. 1.8Fox Islands, Aleutian Islands, Alaska · 1150 days ago · 68 km deep · 35 km away
  14. 2.0121 km S of Unalaska, Alaska · 1150 days ago · 25 km deep · 47 km away
  15. 1.676 km S of Unalaska, Alaska · 1149 days ago · 23 km deep · 23 km away
  16. 1.734 km SE of Unalaska, Alaska · 1149 days ago · 68 km deep · 77 km away
  17. 2.6143 km S of Unalaska, Alaska · 1149 days ago · 10 km deep · 75 km away
  18. 3.4115 km S of Unalaska, Alaska · 1149 days ago · 35 km deep · 41 km away
  19. 3.7128 km S of Unalaska, Alaska · 1149 days ago · 36 km deep · 54 km away
  20. 2.5Fox Islands, Aleutian Islands, Alaska · 1149 days ago · 10 km deep · 71 km away
  21. 3.1118 km S of Unalaska, Alaska · 1149 days ago · 7 km deep · 43 km away
  22. 1.717 km WSW of Dutch Harbor, Alaska · 1148 days ago · 6 km deep · 74 km away
  23. 2.1124 km S of Unalaska, Alaska · 1148 days ago · 1 km deep · 53 km away
  24. 1.5Fox Islands, Aleutian Islands, Alaska · 1147 days ago · 20 km deep · 43 km away
  25. 2.1121 km S of Unalaska, Alaska · 1147 days ago · 26 km deep · 48 km away
  26. 1.556 km SSE of Unalaska, Alaska · 1146 days ago · 37 km deep · 66 km away
  27. 3.2Fox Islands, Aleutian Islands, Alaska · 1146 days ago · 35 km deep · 86 km away
  28. 1.641 km SSE of Unalaska, Alaska · 1146 days ago · 42 km deep · 67 km away
  29. 1.868 km S of Akutan, Alaska · 1145 days ago · 21 km deep · 97 km away
  30. 1.774 km S of Unalaska, Alaska · 1145 days ago · 19 km deep · 19 km away
  31. 3.1Fox Islands, Aleutian Islands, Alaska · 1145 days ago · 35 km deep · 94 km away
  32. 3.153 km SW of Unalaska, Alaska · 1145 days ago · 18 km deep · 31 km away
  33. 2.566 km S of Unalaska, Alaska · 1144 days ago · 35 km deep · 44 km away
  34. 1.916 km SE of Unalaska, Alaska · 1143 days ago · 78 km deep · 80 km away
  35. 1.670 km SSE of Unalaska, Alaska · 1143 days ago · 25 km deep · 65 km away
  36. 2.881 km SE of Unalaska, Alaska · 1142 days ago · 35 km deep · 93 km away
  37. 1.616 km WSW of Dutch Harbor, Alaska · 1142 days ago · 7 km deep · 74 km away
  38. 1.518 km WSW of Dutch Harbor, Alaska · 1141 days ago · 6 km deep · 73 km away
  39. 1.694 km E of Nikolski, Alaska · 1141 days ago · 52 km deep · 32 km away
  40. 1.638 km W of Dutch Harbor, Alaska · 1139 days ago · 92 km deep · 76 km away
  41. 1.655 km SW of Unalaska, Alaska · 1138 days ago · 16 km deep · 43 km away
  42. 1.571 km WSW of Unalaska, Alaska · 1138 days ago · 8 km deep · 45 km away
  43. 1.545 km ESE of Nikolski, Alaska · 1137 days ago · 47 km deep · 90 km away
  44. 1.866 km E of Nikolski, Alaska · 1136 days ago · 63 km deep · 60 km away
  45. 2.079 km SSW of Unalaska, Alaska · 1136 days ago · 44 km deep · 13 km away
  46. 3.475 km S of Unalaska, Alaska · 1135 days ago · 35 km deep · 19 km away
  47. 1.753 km SE of Unalaska, Alaska · 1134 days ago · 42 km deep · 83 km away
  48. 2.075 km SSW of Unalaska, Alaska · 1134 days ago · 31 km deep · 13 km away
  49. 2.3146 km ESE of Nikolski, Alaska · 1134 days ago · 25 km deep · 80 km away
  50. 3.637 km W of Dutch Harbor, Alaska · 1133 days ago · 114 km deep · 72 km away
  51. 2.9Fox Islands, Aleutian Islands, Alaska · 1133 days ago · 35 km deep · 10 km away
  52. 1.756 km SW of Unalaska, Alaska · 1133 days ago · 17 km deep · 45 km away
  53. 1.885 km S of Unalaska, Alaska · 1132 days ago · 20 km deep · 27 km away
  54. 3.356 km SSE of Unalaska, Alaska · 1132 days ago · 35 km deep · 62 km away
  55. 1.882 km SSW of Unalaska, Alaska · 1131 days ago · 43 km deep · 1 km away
  56. 2.255 km SE of Nikolski, Alaska · 1131 days ago · 26 km deep · 98 km away
  57. 3.266 km E of Nikolski, Alaska · 1130 days ago · 35 km deep · 66 km away
  58. 1.9115 km SSE of Unalaska, Alaska · 1130 days ago · 7 km deep · 96 km away
  59. 1.654 km SW of Unalaska, Alaska · 1129 days ago · 66 km deep · 31 km away
  60. 1.8Fox Islands, Aleutian Islands, Alaska · 1129 days ago · 10 km deep · 39 km away

The first 60 of 143.

Before

  1. 1.726 km ESE of Unalaska, Alaska · 1157 days ago · 78 km deep · 83 km away
  2. 1.939 km SSE of Unalaska, Alaska · 1157 days ago · 47 km deep · 64 km away
  3. 1.550 km SW of Unalaska, Alaska · 1157 days ago · 14 km deep · 40 km away
  4. 1.749 km SW of Unalaska, Alaska · 1157 days ago · 21 km deep · 43 km away
  5. 1.949 km SW of Unalaska, Alaska · 1158 days ago · 14 km deep · 40 km away
  6. 1.550 km SW of Unalaska, Alaska · 1158 days ago · 15 km deep · 39 km away
  7. 1.6Fox Islands, Aleutian Islands, Alaska · 1158 days ago · 67 km deep · 45 km away
  8. 2.876 km S of Unalaska, Alaska · 1158 days ago · 35 km deep · 41 km away
  9. 4.593 km S of Unalaska, Alaska · 1158 days ago · 35 km deep · 25 km away
  10. 3.488 km SSW of Unalaska, Alaska · 1159 days ago · 35 km deep · 7 km away
  11. 1.592 km SSE of Unalaska, Alaska · 1159 days ago · 25 km deep · 67 km away
  12. 2.013 km NNE of Dutch Harbor, Alaska · 1159 days ago · 116 km deep · 97 km away
  13. 1.949 km SW of Unalaska, Alaska · 1159 days ago · 16 km deep · 41 km away
  14. 2.350 km SW of Unalaska, Alaska · 1159 days ago · 13 km deep · 38 km away
  15. 4.255 km SSW of Unalaska, Alaska · 1159 days ago · 4 km deep · 27 km away · felt by 4
  16. 2.9106 km ESE of Nikolski, Alaska · 1159 days ago · 35 km deep · 86 km away
  17. 1.649 km ESE of Nikolski, Alaska · 1160 days ago · 24 km deep · 85 km away
  18. 1.858 km SSE of Unalaska, Alaska · 1160 days ago · 56 km deep · 50 km away
  19. 2.152 km SSE of Unalaska, Alaska · 1160 days ago · 54 km deep · 63 km away
  20. 1.776 km SSW of Unalaska, Alaska · 1160 days ago · 56 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0239sarin9. Read Wed, Sep 30, 2026, 4:10 PM UTC.