M1.9 earthquake 49 km S of Adak, Alaska

Magnitude

1.9 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Mon, Aug 28, 2023, 8:40 AM HADT

UTC

2023-08-28 17:40:19 UTC

Depth

32.4 km (20.1 mi), shallow

Epicenter

51.436° N, 176.554° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

24

After

1. 1.984 km WSW of Adak, AlaskaMon, Aug 28, 9:48 AM HADT · 1130 days ago · 13 km deep · 77 km away
2. 1.870 km SSE of Adak, AlaskaMon, Aug 28, 10:47 AM HADT · 1130 days ago · 20 km deep · 25 km away
3. 1.869 km SSE of Adak, AlaskaMon, Aug 28, 12:22 PM HADT · 1130 days ago · 7 km deep · 24 km away
4. 1.751 km SE of Adak, AlaskaMon, Aug 28, 1:19 PM HADT · 1130 days ago · 24 km deep · 29 km away
5. 2.6Andreanof Islands, Aleutian Islands, AlaskaMon, Aug 28, 2:53 PM HADT · 1129 days ago · 35 km deep · 25 km away
6. 1.969 km SSE of Adak, AlaskaMon, Aug 28, 5:04 PM HADT · 1129 days ago · 23 km deep · 25 km away
7. 2.718 km S of Adak, AlaskaMon, Aug 28, 10:20 PM HADT · 1129 days ago · 82 km deep · 31 km away
8. 1.982 km WSW of Adak, AlaskaTue, Aug 29, 5:49 AM HADT · 1129 days ago · 36 km deep · 81 km away
9. 1.857 km SSE of Adak, AlaskaTue, Aug 29, 10:18 AM HADT · 1129 days ago · 21 km deep · 15 km away
10. 3.457 km SE of Adak, AlaskaTue, Aug 29, 3:22 PM HADT · 1128 days ago · 35 km deep · 36 km away
11. 1.861 km SE of Adak, AlaskaTue, Aug 29, 4:40 PM HADT · 1128 days ago · 29 km deep · 39 km away
12. 2.566 km SSW of Adak, AlaskaThu, Aug 31, 2:19 AM HADT · 1127 days ago · 40 km deep · 31 km away
13. 2.2110 km SW of Adak, AlaskaThu, Aug 31, 7:13 AM HADT · 1127 days ago · 32 km deep · 91 km away
14. 1.951 km S of Adak, AlaskaThu, Aug 31, 8:38 AM HADT · 1127 days ago · 24 km deep · 8 km away
15. 2.053 km S of Adak, AlaskaThu, Aug 31, 9:53 AM HADT · 1127 days ago · 26 km deep · 6 km away
16. 2.054 km WSW of Adak, AlaskaThu, Aug 31, 9:01 PM HADT · 1126 days ago · 76 km deep · 67 km away
17. 1.755 km S of Adak, AlaskaThu, Aug 31, 9:59 PM HADT · 1126 days ago · 13 km deep · 7 km away
18. 1.975 km SW of Adak, AlaskaThu, Aug 31, 11:23 PM HADT · 1126 days ago · 59 km deep · 69 km away
19. 1.532 km SSW of Adak, AlaskaFri, Sep 1, 8:25 AM HADT · 1126 days ago · 41 km deep · 22 km away
20. 2.677 km SW of Adak, AlaskaFri, Sep 1, 4:50 PM HADT · 1125 days ago · 35 km deep · 62 km away
21. 2.655 km SE of Adak, AlaskaSat, Sep 2, 12:56 AM HADT · 1125 days ago · 35 km deep · 36 km away
22. 2.144 km E of Adak, AlaskaSat, Sep 2, 7:21 AM HADT · 1125 days ago · 70 km deep · 60 km away
23. 3.365 km SSE of Adak, AlaskaSat, Sep 2, 11:43 AM HADT · 1125 days ago · 35 km deep · 21 km away
24. 2.790 km SSE of Adak, AlaskaSat, Sep 2, 6:30 PM HADT · 1124 days ago · 10 km deep · 43 km away
25. 1.953 km SSW of Adak, AlaskaSat, Sep 2, 11:15 PM HADT · 1124 days ago · 49 km deep · 33 km away
26. 1.868 km SW of Adak, AlaskaSun, Sep 3, 6:46 AM HADT · 1124 days ago · 48 km deep · 62 km away
27. 2.086 km SW of Adak, AlaskaSun, Sep 3, 9:26 AM HADT · 1124 days ago · 26 km deep · 66 km away
28. 2.770 km SSE of Adak, AlaskaSun, Sep 3, 5:51 PM HADT · 1123 days ago · 35 km deep · 22 km away
29. 1.751 km SW of Adak, AlaskaMon, Sep 4, 5:36 AM HADT · 1123 days ago · 44 km deep · 36 km away
30. 3.244 km S of Adak, AlaskaMon, Sep 4, 6:14 AM HADT · 1123 days ago · 35 km deep · 5 km away
31. 3.268 km SW of Adak, AlaskaMon, Sep 4, 5:59 PM HADT · 1122 days ago · 65 km deep · 61 km away
32. 1.738 km SE of Adak, AlaskaTue, Sep 5, 3:14 AM HADT · 1122 days ago · 87 km deep · 27 km away
33. 3.081 km SE of Adak, AlaskaTue, Sep 5, 10:51 AM HADT · 1122 days ago · 35 km deep · 60 km away
34. 1.979 km ESE of Adak, AlaskaTue, Sep 5, 1:09 PM HADT · 1122 days ago · 26 km deep · 62 km away
35. 1.993 km S of Adak, AlaskaTue, Sep 5, 2:14 PM HADT · 1122 days ago · 26 km deep · 47 km away
36. 1.973 km ESE of Adak, AlaskaTue, Sep 5, 7:23 PM HADT · 1121 days ago · 34 km deep · 64 km away
37. 1.5103 km SW of Adak, AlaskaWed, Sep 6, 4:36 AM HADT · 1121 days ago · 20 km deep · 77 km away
38. 1.597 km WSW of Adak, AlaskaWed, Sep 6, 4:51 AM HADT · 1121 days ago · 37 km deep · 87 km away
39. 1.542 km S of Adak, AlaskaWed, Sep 6, 10:48 AM HADT · 1121 days ago · 35 km deep · 7 km away
40. 2.053 km NE of Adak, AlaskaWed, Sep 6, 2:41 PM HADT · 1120 days ago · 132 km deep · 91 km away
41. 1.780 km SE of Adak, AlaskaWed, Sep 6, 4:42 PM HADT · 1120 days ago · 20 km deep · 56 km away
42. 1.524 km SSW of Adak, AlaskaThu, Sep 7, 12:18 AM HADT · 1120 days ago · 65 km deep · 31 km away
43. 1.676 km WSW of Adak, AlaskaThu, Sep 7, 10:42 AM HADT · 1120 days ago · 45 km deep · 70 km away
44. 1.891 km WSW of Adak, AlaskaThu, Sep 7, 12:33 PM HADT · 1120 days ago · 28 km deep · 88 km away
45. 2.048 km SSW of Adak, AlaskaThu, Sep 7, 12:53 PM HADT · 1120 days ago · 39 km deep · 30 km away
46. 1.719 km WSW of Adak, AlaskaThu, Sep 7, 2:58 PM HADT · 1119 days ago · 77 km deep · 49 km away
47. 1.546 km SSW of Adak, AlaskaThu, Sep 7, 9:49 PM HADT · 1119 days ago · 42 km deep · 30 km away
48. 1.621 km S of Adak, AlaskaThu, Sep 7, 10:46 PM HADT · 1119 days ago · 65 km deep · 29 km away
49. 2.622 km ESE of Adak, AlaskaFri, Sep 8, 2:32 AM HADT · 1119 days ago · 68 km deep · 39 km away
50. 1.679 km W of Adak, AlaskaFri, Sep 8, 7:39 AM HADT · 1119 days ago · -2 km deep · 97 km away
51. 2.0Andreanof Islands, Aleutian Islands, AlaskaFri, Sep 8, 8:23 AM HADT · 1119 days ago · 25 km deep · 54 km away
52. 1.751 km SE of Adak, AlaskaFri, Sep 8, 1:03 PM HADT · 1119 days ago · 31 km deep · 28 km away
53. 1.828 km SSE of Adak, AlaskaFri, Sep 8, 6:45 PM HADT · 1118 days ago · 46 km deep · 24 km away
54. 2.779 km ESE of Adak, AlaskaSat, Sep 9, 1:07 PM HADT · 1118 days ago · 35 km deep · 67 km away
55. 1.941 km S of Adak, AlaskaSat, Sep 9, 1:32 PM HADT · 1118 days ago · 44 km deep · 9 km away
56. 2.168 km SW of Adak, AlaskaSat, Sep 9, 2:05 PM HADT · 1118 days ago · 32 km deep · 58 km away
57. 3.543 km E of Adak, AlaskaSat, Sep 9, 4:32 PM HADT · 1117 days ago · 80 km deep · 58 km away
58. 1.858 km SSE of Adak, AlaskaSat, Sep 9, 4:58 PM HADT · 1117 days ago · 18 km deep · 20 km away
59. 1.938 km ESE of Adak, AlaskaSat, Sep 9, 7:17 PM HADT · 1117 days ago · 72 km deep · 46 km away
60. 1.689 km WSW of Adak, AlaskaSat, Sep 9, 8:50 PM HADT · 1117 days ago · 25 km deep · 88 km away

The first 60 of at least 199.

Before

1. 2.169 km ESE of Adak, AlaskaMon, Aug 28, 2:39 AM HADT · 1130 days ago · 24 km deep · 56 km away
2. 1.842 km SSE of Adak, AlaskaSun, Aug 27, 2:43 PM HADT · 1130 days ago · 46 km deep · 19 km away
3. 3.0100 km SW of Adak, AlaskaSat, Aug 26, 11:33 PM HADT · 1131 days ago · 35 km deep · 79 km away
4. 1.8110 km SW of Adak, AlaskaSat, Aug 26, 11:16 PM HADT · 1131 days ago · 26 km deep · 94 km away
5. 1.638 km SSE of Adak, AlaskaSat, Aug 26, 11:02 PM HADT · 1131 days ago · 34 km deep · 18 km away
6. 2.9Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 26, 9:28 PM HADT · 1131 days ago · 10 km deep · 48 km away
7. 2.858 km SE of Adak, AlaskaSat, Aug 26, 4:47 PM HADT · 1131 days ago · 35 km deep · 39 km away
8. 1.848 km SE of Adak, AlaskaSat, Aug 26, 4:31 PM HADT · 1131 days ago · 24 km deep · 25 km away
9. 1.883 km ESE of Adak, AlaskaSat, Aug 26, 7:35 AM HADT · 1132 days ago · 24 km deep · 75 km away
10. 1.841 km W of Adak, AlaskaSat, Aug 26, 5:37 AM HADT · 1132 days ago · 71 km deep · 64 km away
11. 2.760 km SE of Adak, AlaskaSat, Aug 26, 1:52 AM HADT · 1132 days ago · 35 km deep · 39 km away
12. 1.858 km ENE of Adak, AlaskaSat, Aug 26, 12:32 AM HADT · 1132 days ago · 93 km deep · 80 km away
13. 1.640 km S of Adak, AlaskaFri, Aug 25, 10:39 PM HADT · 1132 days ago · 33 km deep · 12 km away
14. 2.037 km ESE of Adak, AlaskaFri, Aug 25, 1:33 PM HADT · 1133 days ago · 62 km deep · 45 km away
15. 1.887 km SW of Adak, AlaskaFri, Aug 25, 7:59 AM HADT · 1133 days ago · 32 km deep · 75 km away
16. 1.861 km SSE of Adak, AlaskaThu, Aug 24, 7:49 PM HADT · 1133 days ago · 15 km deep · 15 km away
17. 1.580 km SSE of Adak, AlaskaThu, Aug 24, 6:44 AM HADT · 1134 days ago · 26 km deep · 34 km away
18. 1.769 km SSW of Adak, AlaskaThu, Aug 24, 2:40 AM HADT · 1134 days ago · 30 km deep · 43 km away
19. 1.769 km W of Adak, AlaskaThu, Aug 24, 12:21 AM HADT · 1134 days ago · 95 km deep · 93 km away
20. 1.626 km NNE of Adak, AlaskaWed, Aug 23, 6:38 PM HADT · 1134 days ago · 101 km deep · 74 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak023b17c9rf. Read Thu, Oct 1, 2026, 11:02 AM UTC.