M3.1 earthquake 48 km SE of Atka, Alaska

Magnitude

3.1 (ML, local (Richter)), minor

Magnitude from

USGS National Earthquake Information Center

Local time

Mon, Sep 18, 2023, 11:02 AM HADT

UTC

2023-09-18 20:02:02 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

51.955° N, 173.616° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 5.2 km horizontally, 2.0 km in depth

Magnitude uncertainty

±0.12

Depth from

Operator assigned

Station coverage gap

300°, poorly surrounded by stations

Stations used

14

After

1. 1.610 km SSW of Atka, AlaskaMon, Sep 18, 11:07 AM HADT · 1108 days ago · 9 km deep · 47 km away
2. 3.1Andreanof Islands, Aleutian Islands, AlaskaMon, Sep 18, 12:32 PM HADT · 1108 days ago · 10 km deep · 2 km away
3. 2.8Andreanof Islands, Aleutian Islands, AlaskaWed, Sep 20, 8:06 PM HADT · 1106 days ago · 10 km deep · 8 km away
4. 1.6Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 21, 3:03 AM HADT · 1106 days ago · 1 km deep · 56 km away
5. 3.573 km S of Atka, AlaskaThu, Sep 21, 8:06 AM HADT · 1105 days ago · 44 km deep · 53 km away
6. 2.225 km ESE of Atka, AlaskaThu, Sep 21, 7:23 PM HADT · 1105 days ago · 5 km deep · 23 km away
7. 1.933 km ESE of Atka, AlaskaFri, Sep 22, 5:37 AM HADT · 1105 days ago · 12 km deep · 18 km away
8. 2.171 km E of Atka, AlaskaFri, Sep 22, 2:43 PM HADT · 1104 days ago · 11 km deep · 49 km away
9. 3.244 km N of Atka, AlaskaFri, Sep 22, 8:24 PM HADT · 1104 days ago · 219 km deep · 84 km away
10. 2.159 km ENE of Atka, AlaskaFri, Sep 22, 9:06 PM HADT · 1104 days ago · 12 km deep · 51 km away
11. 3.043 km SE of Atka, AlaskaSat, Sep 23, 5:06 AM HADT · 1104 days ago · 10 km deep · 6 km away
12. 2.799 km S of Atka, AlaskaSun, Sep 24, 3:59 AM HADT · 1103 days ago · 10 km deep · 85 km away
13. 3.150 km ESE of Atka, AlaskaSun, Sep 24, 10:20 PM HADT · 1102 days ago · 14 km deep · 12 km away
14. 3.244 km ESE of Atka, AlaskaMon, Sep 25, 5:22 AM HADT · 1102 days ago · 13 km deep · 4 km away
15. 3.048 km ESE of Atka, AlaskaMon, Sep 25, 5:57 AM HADT · 1102 days ago · 10 km deep · 0 km away
16. 3.944 km NNW of Atka, AlaskaMon, Sep 25, 7:21 AM HADT · 1101 days ago · 202 km deep · 88 km away
17. 1.651 km SSW of Atka, AlaskaTue, Sep 26, 1:11 AM HADT · 1101 days ago · 40 km deep · 63 km away
18. 2.0109 km S of Atka, AlaskaTue, Sep 26, 6:50 AM HADT · 1100 days ago · 3 km deep · 91 km away
19. 2.037 km NW of Atka, AlaskaTue, Sep 26, 9:36 AM HADT · 1100 days ago · 150 km deep · 85 km away
20. 1.831 km ESE of Atka, AlaskaTue, Sep 26, 11:36 AM HADT · 1100 days ago · 13 km deep · 18 km away
21. 1.652 km SSE of Atka, AlaskaTue, Sep 26, 12:04 PM HADT · 1100 days ago · 7 km deep · 38 km away
22. 1.635 km ESE of Atka, AlaskaTue, Sep 26, 3:05 PM HADT · 1100 days ago · 6 km deep · 13 km away
23. 2.3109 km SSE of Atka, AlaskaWed, Sep 27, 3:27 AM HADT · 1100 days ago · 16 km deep · 77 km away
24. 3.0127 km SE of Atka, AlaskaWed, Sep 27, 8:36 AM HADT · 1099 days ago · 35 km deep · 79 km away
25. 1.739 km ESE of Atka, AlaskaWed, Sep 27, 8:41 PM HADT · 1099 days ago · 9 km deep · 11 km away
26. 2.589 km ESE of Atka, AlaskaWed, Sep 27, 11:51 PM HADT · 1099 days ago · 73 km deep · 46 km away
27. 1.845 km E of Atka, AlaskaThu, Sep 28, 7:24 AM HADT · 1098 days ago · 16 km deep · 20 km away
28. 1.732 km ESE of Atka, AlaskaThu, Sep 28, 2:08 PM HADT · 1098 days ago · 11 km deep · 19 km away
29. 2.939 km SSW of Atka, AlaskaThu, Sep 28, 3:43 PM HADT · 1098 days ago · 62 km deep · 54 km away
30. 2.979 km SSE of Atka, AlaskaSat, Sep 30, 7:20 PM HADT · 1096 days ago · 35 km deep · 52 km away
31. 2.574 km S of Atka, AlaskaSat, Sep 30, 11:24 PM HADT · 1096 days ago · 35 km deep · 60 km away
32. 1.616 km WNW of Atka, AlaskaSun, Oct 1, 2:06 PM HADT · 1095 days ago · 10 km deep · 65 km away
33. 2.131 km ESE of Atka, AlaskaSun, Oct 1, 7:50 PM HADT · 1095 days ago · 8 km deep · 17 km away
34. 2.742 km W of Atka, AlaskaMon, Oct 2, 2:26 AM HADT · 1095 days ago · 10 km deep · 86 km away
35. 1.940 km ESE of Atka, AlaskaMon, Oct 2, 3:16 AM HADT · 1095 days ago · 10 km deep · 14 km away
36. 2.3100 km SSE of Atka, AlaskaMon, Oct 2, 9:26 AM HADT · 1094 days ago · 7 km deep · 64 km away
37. 1.829 km ESE of Atka, AlaskaMon, Oct 2, 10:34 AM HADT · 1094 days ago · 13 km deep · 20 km away
38. 1.660 km WSW of Atka, AlaskaMon, Oct 2, 10:39 AM HADT · 1094 days ago · 66 km deep · 95 km away
39. 2.526 km SSW of Atka, AlaskaMon, Oct 2, 11:45 AM HADT · 1094 days ago · 74 km deep · 51 km away
40. 1.957 km SW of Atka, AlaskaMon, Oct 2, 6:23 PM HADT · 1094 days ago · 38 km deep · 78 km away
41. 2.949 km N of Atka, AlaskaMon, Oct 2, 7:57 PM HADT · 1094 days ago · 206 km deep · 85 km away
42. 1.932 km ESE of Atka, AlaskaTue, Oct 3, 6:44 AM HADT · 1093 days ago · 17 km deep · 19 km away
43. 2.138 km ESE of Atka, AlaskaTue, Oct 3, 6:47 AM HADT · 1093 days ago · 13 km deep · 11 km away
44. 1.966 km SW of Atka, AlaskaThu, Oct 5, 2:57 PM HADT · 1091 days ago · 29 km deep · 86 km away
45. 1.647 km W of Atka, AlaskaThu, Oct 5, 8:54 PM HADT · 1091 days ago · 13 km deep · 90 km away
46. 4.048 km N of Atka, AlaskaFri, Oct 6, 3:02 AM HADT · 1091 days ago · 177 km deep · 85 km away
47. 3.245 km SE of Atka, AlaskaSat, Oct 7, 10:27 PM HADT · 1089 days ago · 10 km deep · 4 km away
48. 2.949 km ESE of Atka, AlaskaSun, Oct 8, 3:22 AM HADT · 1089 days ago · 11 km deep · 2 km away
49. 3.579 km SE of Atka, AlaskaSun, Oct 8, 5:47 AM HADT · 1089 days ago · 35 km deep · 34 km away
50. 3.519 km N of Atka, AlaskaSun, Oct 8, 6:07 AM HADT · 1088 days ago · 203 km deep · 62 km away
51. 2.578 km SW of Atka, AlaskaSun, Oct 8, 4:04 PM HADT · 1088 days ago · 35 km deep · 97 km away
52. 2.850 km ESE of Atka, AlaskaSun, Oct 8, 6:18 PM HADT · 1088 days ago · 10 km deep · 3 km away
53. 3.178 km NE of Atka, AlaskaMon, Oct 9, 3:11 AM HADT · 1088 days ago · 232 km deep · 85 km away
54. 1.854 km SSW of Atka, AlaskaMon, Oct 9, 4:35 AM HADT · 1088 days ago · 14 km deep · 72 km away
55. 1.941 km E of Atka, AlaskaMon, Oct 9, 6:20 AM HADT · 1087 days ago · 13 km deep · 21 km away
56. 2.636 km S of Atka, AlaskaMon, Oct 9, 2:24 PM HADT · 1087 days ago · 66 km deep · 40 km away
57. 2.143 km E of Atka, AlaskaTue, Oct 10, 1:57 AM HADT · 1087 days ago · 28 km deep · 22 km away
58. 1.960 km SE of Atka, AlaskaTue, Oct 10, 3:34 AM HADT · 1087 days ago · 55 km deep · 13 km away
59. 1.536 km ESE of Atka, AlaskaTue, Oct 10, 4:20 AM HADT · 1087 days ago · 14 km deep · 12 km away
60. 3.549 km SE of Atka, AlaskaTue, Oct 10, 9:27 AM HADT · 1086 days ago · 5 km deep · 7 km away

The first 60 of 116.

Before

1. 3.055 km NNE of Atka, AlaskaMon, Sep 18, 5:42 AM HADT · 1109 days ago · 184 km deep · 76 km away
2. 3.176 km ESE of Atka, AlaskaSun, Sep 17, 10:55 PM HADT · 1109 days ago · 73 km deep · 31 km away
3. 3.9Andreanof Islands, Aleutian Islands, AlaskaSun, Sep 17, 10:03 PM HADT · 1109 days ago · 85 km deep · 52 km away
4. 1.631 km E of Atka, AlaskaSun, Sep 17, 4:00 PM HADT · 1109 days ago · 17 km deep · 27 km away
5. 1.835 km ESE of Atka, AlaskaSun, Sep 17, 10:50 AM HADT · 1109 days ago · 9 km deep · 15 km away
6. 3.245 km SE of Atka, AlaskaSun, Sep 17, 7:48 AM HADT · 1109 days ago · 10 km deep · 7 km away
7. 2.134 km ESE of Atka, AlaskaSun, Sep 17, 3:15 AM HADT · 1110 days ago · 6 km deep · 16 km away
8. 2.9Andreanof Islands, Aleutian Islands, AlaskaSat, Sep 16, 11:30 PM HADT · 1110 days ago · 203 km deep · 88 km away
9. 3.338 km ESE of Atka, AlaskaSat, Sep 16, 6:15 AM HADT · 1110 days ago · 17 km deep · 19 km away
10. 2.435 km ESE of Atka, AlaskaSat, Sep 16, 5:47 AM HADT · 1111 days ago · 8 km deep · 13 km away
11. 1.731 km ESE of Atka, AlaskaFri, Sep 15, 9:58 AM HADT · 1111 days ago · 8 km deep · 18 km away
12. 2.378 km ESE of Atka, AlaskaThu, Sep 14, 8:13 PM HADT · 1112 days ago · 38 km deep · 32 km away
13. 3.449 km ESE of Atka, AlaskaThu, Sep 14, 7:51 PM HADT · 1112 days ago · 10 km deep · 3 km away
14. 2.3Andreanof Islands, Aleutian Islands, AlaskaThu, Sep 14, 7:44 PM HADT · 1112 days ago · 7 km deep · 20 km away
15. 2.055 km S of Atka, AlaskaWed, Sep 13, 5:37 AM HADT · 1114 days ago · 18 km deep · 46 km away
16. 3.245 km NNW of Atka, AlaskaTue, Sep 12, 2:23 PM HADT · 1114 days ago · 180 km deep · 89 km away
17. 3.749 km ESE of Atka, AlaskaTue, Sep 12, 12:12 PM HADT · 1114 days ago · 10 km deep · 1 km away
18. 3.243 km ESE of Atka, AlaskaTue, Sep 12, 7:13 AM HADT · 1114 days ago · 19 km deep · 18 km away
19. 3.140 km ESE of Atka, AlaskaTue, Sep 12, 6:56 AM HADT · 1114 days ago · 7 km deep · 15 km away
20. 1.933 km ESE of Atka, AlaskaMon, Sep 11, 7:42 AM HADT · 1115 days ago · 15 km deep · 19 km away

From the USGS Earthquake Hazards Program and its partner networks, event us6000lcd3 (also filed as ak023bzz6oyd). Read Thu, Oct 1, 2026, 2:34 AM UTC.