M1.8 earthquake 116 km SW of Adak, Alaska

Magnitude

1.8 (ML, local (Richter)), micro

Magnitude from

Alaska Earthquake Center

Local time

Tue, Sep 26, 2023, 8:46 PM HADT

UTC

2023-09-27 05:46:50 UTC

Depth

13.1 km (8.1 mi), shallow

Epicenter

51.277° N, 178.019° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Stations used

19

After

1. 2.2122 km W of Adak, AlaskaTue, Sep 26, 9:08 PM HADT · 1100 days ago · 14 km deep · 71 km away
2. 1.675 km SW of Adak, AlaskaWed, Sep 27, 5:46 AM HADT · 1100 days ago · 45 km deep · 42 km away
3. 3.072 km SSW of Adak, AlaskaWed, Sep 27, 7:05 AM HADT · 1100 days ago · 35 km deep · 61 km away
4. 2.3110 km WSW of Adak, AlaskaWed, Sep 27, 2:30 PM HADT · 1099 days ago · 7 km deep · 28 km away
5. 1.6112 km WSW of Adak, AlaskaThu, Sep 28, 2:09 PM HADT · 1098 days ago · 13 km deep · 30 km away
6. 1.662 km SSW of Adak, AlaskaThu, Sep 28, 4:06 PM HADT · 1098 days ago · 25 km deep · 72 km away
7. 1.7123 km WSW of Adak, AlaskaThu, Sep 28, 4:51 PM HADT · 1098 days ago · 14 km deep · 27 km away
8. 1.7106 km WSW of Adak, AlaskaThu, Sep 28, 6:51 PM HADT · 1098 days ago · 11 km deep · 17 km away
9. 3.7100 km WSW of Adak, AlaskaThu, Sep 28, 10:40 PM HADT · 1098 days ago · 82 km deep · 29 km away
10. 2.7134 km SW of Adak, AlaskaFri, Sep 29, 6:55 AM HADT · 1098 days ago · 35 km deep · 18 km away
11. 2.2120 km WSW of Adak, AlaskaFri, Sep 29, 5:10 PM HADT · 1097 days ago · 15 km deep · 24 km away
12. 2.664 km S of Adak, AlaskaSat, Sep 30, 3:34 AM HADT · 1097 days ago · 35 km deep · 85 km away
13. 2.1189 km WSW of Adak, AlaskaSat, Sep 30, 12:58 PM HADT · 1097 days ago · 23 km deep · 85 km away
14. 1.946 km SW of Adak, AlaskaSat, Sep 30, 1:59 PM HADT · 1096 days ago · 29 km deep · 72 km away
15. 1.9129 km WSW of Adak, AlaskaSat, Sep 30, 6:25 PM HADT · 1096 days ago · 26 km deep · 17 km away
16. 1.993 km SW of Adak, AlaskaSat, Sep 30, 6:41 PM HADT · 1096 days ago · 13 km deep · 24 km away
17. 1.964 km SSW of Adak, AlaskaSat, Sep 30, 7:47 PM HADT · 1096 days ago · 26 km deep · 71 km away
18. 2.559 km WSW of Adak, AlaskaSun, Oct 1, 9:16 AM HADT · 1096 days ago · 15 km deep · 57 km away
19. 1.8101 km SW of Adak, AlaskaSun, Oct 1, 1:44 PM HADT · 1096 days ago · 43 km deep · 16 km away
20. 1.748 km SW of Adak, AlaskaSun, Oct 1, 8:02 PM HADT · 1095 days ago · 41 km deep · 72 km away
21. 2.0Andreanof Islands, Aleutian Islands, AlaskaMon, Oct 2, 5:34 AM HADT · 1095 days ago · 18 km deep · 95 km away
22. 1.699 km SW of Adak, AlaskaMon, Oct 2, 5:53 AM HADT · 1095 days ago · 25 km deep · 24 km away
23. 1.898 km SW of Adak, AlaskaMon, Oct 2, 6:07 AM HADT · 1095 days ago · 22 km deep · 30 km away
24. 2.1129 km SW of Adak, AlaskaMon, Oct 2, 8:55 AM HADT · 1095 days ago · 26 km deep · 14 km away
25. 2.5113 km WSW of Adak, AlaskaMon, Oct 2, 3:51 PM HADT · 1094 days ago · 35 km deep · 7 km away
26. 3.2190 km WSW of Adak, AlaskaTue, Oct 3, 7:06 PM HADT · 1093 days ago · 35 km deep · 86 km away
27. 1.894 km WSW of Adak, AlaskaWed, Oct 4, 3:39 PM HADT · 1092 days ago · 13 km deep · 26 km away
28. 2.5136 km W of Adak, AlaskaWed, Oct 4, 6:22 PM HADT · 1092 days ago · 136 km deep · 67 km away
29. 2.0143 km WSW of Adak, AlaskaThu, Oct 5, 3:45 AM HADT · 1092 days ago · 29 km deep · 34 km away
30. 1.693 km WSW of Adak, AlaskaThu, Oct 5, 3:45 AM HADT · 1092 days ago · 36 km deep · 27 km away
31. 1.770 km SSW of Adak, AlaskaThu, Oct 5, 4:13 AM HADT · 1092 days ago · 32 km deep · 70 km away
32. 1.9139 km WSW of Adak, AlaskaThu, Oct 5, 6:52 AM HADT · 1092 days ago · 23 km deep · 26 km away
33. 2.6127 km WSW of Adak, AlaskaThu, Oct 5, 11:33 AM HADT · 1092 days ago · 33 km deep · 21 km away
34. 2.2150 km W of Adak, AlaskaThu, Oct 5, 12:16 PM HADT · 1092 days ago · 142 km deep · 88 km away
35. 1.593 km WSW of Adak, AlaskaThu, Oct 5, 12:55 PM HADT · 1092 days ago · 23 km deep · 29 km away
36. 1.569 km WSW of Adak, AlaskaThu, Oct 5, 7:42 PM HADT · 1091 days ago · 28 km deep · 47 km away
37. 1.778 km SW of Adak, AlaskaSat, Oct 7, 3:08 AM HADT · 1090 days ago · 35 km deep · 38 km away
38. 1.860 km SSW of Adak, AlaskaSat, Oct 7, 10:14 AM HADT · 1090 days ago · 51 km deep · 66 km away
39. 1.7114 km WSW of Adak, AlaskaSat, Oct 7, 11:12 AM HADT · 1090 days ago · 26 km deep · 17 km away
40. 1.767 km WSW of Adak, AlaskaSat, Oct 7, 6:41 PM HADT · 1089 days ago · 16 km deep · 52 km away
41. 1.888 km WSW of Adak, AlaskaSat, Oct 7, 11:25 PM HADT · 1089 days ago · 13 km deep · 32 km away
42. 2.893 km W of Adak, AlaskaSun, Oct 8, 12:12 PM HADT · 1089 days ago · 202 km deep · 76 km away
43. 1.741 km SSW of Adak, AlaskaSun, Oct 8, 9:45 PM HADT · 1088 days ago · 44 km deep · 90 km away
44. 1.6Andreanof Islands, Aleutian Islands, AlaskaMon, Oct 9, 5:42 AM HADT · 1088 days ago · 26 km deep · 34 km away
45. 1.594 km WSW of Adak, AlaskaMon, Oct 9, 7:37 AM HADT · 1088 days ago · 13 km deep · 26 km away
46. 2.0138 km SW of Adak, AlaskaMon, Oct 9, 8:42 AM HADT · 1088 days ago · 21 km deep · 23 km away
47. 2.7175 km WSW of Adak, AlaskaMon, Oct 9, 5:52 PM HADT · 1087 days ago · 30 km deep · 75 km away
48. 1.8119 km SW of Adak, AlaskaTue, Oct 10, 12:30 AM HADT · 1087 days ago · 26 km deep · 3 km away
49. 1.8125 km WSW of Adak, AlaskaTue, Oct 10, 6:17 AM HADT · 1087 days ago · 6 km deep · 33 km away
50. 3.4123 km WSW of Adak, AlaskaWed, Oct 11, 1:09 AM HADT · 1086 days ago · 32 km deep · 29 km away
51. 1.9180 km WSW of Adak, AlaskaWed, Oct 11, 2:18 AM HADT · 1086 days ago · 24 km deep · 78 km away
52. 2.7103 km SW of Adak, AlaskaWed, Oct 11, 11:04 PM HADT · 1085 days ago · 35 km deep · 19 km away
53. 3.5107 km SW of Adak, AlaskaThu, Oct 12, 2:31 PM HADT · 1084 days ago · 43 km deep · 17 km away
54. 3.5156 km WSW of Adak, AlaskaThu, Oct 12, 8:22 PM HADT · 1084 days ago · 24 km deep · 40 km away
55. 3.4150 km WSW of Adak, AlaskaFri, Oct 13, 8:23 AM HADT · 1084 days ago · 28 km deep · 35 km away
56. 3.1146 km WSW of Adak, AlaskaFri, Oct 13, 10:50 PM HADT · 1083 days ago · 35 km deep · 32 km away
57. 2.163 km SW of Adak, AlaskaSat, Oct 14, 2:01 AM HADT · 1083 days ago · 59 km deep · 55 km away
58. 1.932 km SW of Adak, AlaskaSat, Oct 14, 5:55 AM HADT · 1083 days ago · 72 km deep · 87 km away
59. 2.7130 km SW of Adak, AlaskaSat, Oct 14, 8:00 AM HADT · 1083 days ago · 35 km deep · 14 km away
60. 2.6186 km WSW of Adak, AlaskaSat, Oct 14, 8:34 AM HADT · 1083 days ago · 33 km deep · 86 km away

The first 60 of 178.

Before

1. 1.8181 km WSW of Adak, AlaskaTue, Sep 26, 5:35 AM HADT · 1101 days ago · 56 km deep · 83 km away
2. 1.5116 km WSW of Adak, AlaskaTue, Sep 26, 4:40 AM HADT · 1101 days ago · 51 km deep · 29 km away
3. 1.8128 km WSW of Adak, AlaskaTue, Sep 26, 4:22 AM HADT · 1101 days ago · 15 km deep · 25 km away
4. 1.8134 km W of Adak, AlaskaMon, Sep 25, 2:37 PM HADT · 1101 days ago · 13 km deep · 61 km away
5. 2.7127 km WSW of Adak, AlaskaMon, Sep 25, 9:10 AM HADT · 1102 days ago · 10 km deep · 37 km away
6. 1.761 km SW of Adak, AlaskaMon, Sep 25, 9:00 AM HADT · 1102 days ago · 44 km deep · 55 km away
7. 3.251 km S of Adak, AlaskaSun, Sep 24, 11:27 PM HADT · 1102 days ago · 10 km deep · 92 km away
8. 3.7129 km W of Adak, AlaskaSun, Sep 24, 8:24 PM HADT · 1102 days ago · 147 km deep · 86 km away
9. 1.8125 km WSW of Adak, AlaskaSun, Sep 24, 8:41 AM HADT · 1103 days ago · 54 km deep · 24 km away
10. 2.0114 km W of Adak, AlaskaSat, Sep 23, 3:59 PM HADT · 1103 days ago · 68 km deep · 54 km away
11. 2.0Andreanof Islands, Aleutian Islands, AlaskaFri, Sep 22, 4:11 PM HADT · 1104 days ago · 26 km deep · 37 km away
12. 1.8151 km WSW of Adak, AlaskaFri, Sep 22, 3:17 PM HADT · 1104 days ago · 26 km deep · 36 km away
13. 2.3119 km W of Adak, AlaskaFri, Sep 22, 12:59 PM HADT · 1105 days ago · 134 km deep · 71 km away
14. 3.8184 km WSW of Adak, AlaskaFri, Sep 22, 11:06 AM HADT · 1105 days ago · 61 km deep · 80 km away
15. 1.886 km WSW of Adak, AlaskaFri, Sep 22, 9:06 AM HADT · 1105 days ago · 38 km deep · 30 km away
16. 2.8Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 21, 8:32 PM HADT · 1105 days ago · 26 km deep · 30 km away
17. 1.6Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 21, 11:43 AM HADT · 1106 days ago · 9 km deep · 52 km away
18. 2.081 km SW of Adak, AlaskaThu, Sep 21, 7:02 AM HADT · 1106 days ago · 39 km deep · 36 km away
19. 1.996 km SW of Adak, AlaskaWed, Sep 20, 3:42 PM HADT · 1106 days ago · 23 km deep · 30 km away
20. 1.9Andreanof Islands, Aleutian Islands, AlaskaWed, Sep 20, 3:31 PM HADT · 1106 days ago · 11 km deep · 41 km away

From the USGS Earthquake Hazards Program and its partner networks, event ak023cemcu7d. Read Thu, Oct 1, 2026, 10:16 AM UTC.