M1.6 earthquake 100 km W of Adak, Alaska

Magnitude

1.6 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Tue, Apr 11, 2023, 1:40 PM HADT

UTC

2023-04-11 22:40:25 UTC

Depth

3.5 km (2.2 mi), shallow

Epicenter

51.859° N, 178.094° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 0.7 km in depth

Magnitude uncertainty

±0.22

Depth from

From location

Station coverage gap

213°, poorly surrounded by stations

Stations used

4

After

1. 1.899 km W of Adak, AlaskaTue, Apr 11, 5:02 PM HADT · 1270 days ago · 4 km deep · 1 km away
2. 2.6130 km SW of Adak, AlaskaWed, Apr 12, 2:01 AM HADT · 1269 days ago · 35 km deep · 74 km away
3. 3.878 km WSW of Adak, AlaskaWed, Apr 12, 6:36 AM HADT · 1269 days ago · 43 km deep · 52 km away
4. 2.6152 km SW of Adak, AlaskaWed, Apr 12, 2:21 PM HADT · 1269 days ago · 24 km deep · 86 km away
5. 1.698 km W of Adak, AlaskaWed, Apr 12, 4:49 PM HADT · 1269 days ago · -2 km deep · 2 km away
6. 3.496 km SW of Adak, AlaskaWed, Apr 12, 8:08 PM HADT · 1268 days ago · 35 km deep · 71 km away
7. 1.683 km W of Adak, AlaskaWed, Apr 12, 9:22 PM HADT · 1268 days ago · 3 km deep · 17 km away
8. 1.913 km WNW of Adak, AlaskaThu, Apr 13, 1:17 AM HADT · 1268 days ago · 87 km deep · 87 km away
9. 3.2118 km WNW of Adak, AlaskaThu, Apr 13, 7:39 AM HADT · 1268 days ago · 198 km deep · 41 km away
10. 1.854 km SSW of Adak, AlaskaThu, Apr 13, 4:20 PM HADT · 1268 days ago · 32 km deep · 96 km away
11. 2.2191 km W of Adak, AlaskaThu, Apr 13, 11:06 PM HADT · 1267 days ago · 96 km deep · 90 km away
12. 2.074 km SW of Adak, AlaskaFri, Apr 14, 3:22 AM HADT · 1267 days ago · 24 km deep · 57 km away
13. 2.497 km W of Adak, AlaskaFri, Apr 14, 6:27 AM HADT · 1267 days ago · 5 km deep · 3 km away
14. 2.098 km W of Adak, AlaskaFri, Apr 14, 6:28 AM HADT · 1267 days ago · 1 km deep · 2 km away
15. 1.967 km SSW of Adak, AlaskaFri, Apr 14, 8:17 AM HADT · 1267 days ago · 26 km deep · 98 km away
16. 1.6100 km W of Adak, AlaskaFri, Apr 14, 8:47 AM HADT · 1267 days ago · 5 km deep · 2 km away
17. 1.733 km WSW of Adak, AlaskaFri, Apr 14, 10:25 AM HADT · 1267 days ago · 11 km deep · 68 km away
18. 2.0102 km W of Adak, AlaskaSat, Apr 15, 8:41 AM HADT · 1266 days ago · 5 km deep · 3 km away
19. 1.997 km W of Adak, AlaskaSat, Apr 15, 9:14 AM HADT · 1266 days ago · 4 km deep · 3 km away
20. 2.0184 km WSW of Adak, AlaskaSat, Apr 15, 10:48 AM HADT · 1266 days ago · 22 km deep · 92 km away
21. 1.999 km W of Adak, AlaskaSat, Apr 15, 12:01 PM HADT · 1266 days ago · 5 km deep · 2 km away
22. 1.799 km W of Adak, AlaskaSat, Apr 15, 12:24 PM HADT · 1266 days ago · 4 km deep · 1 km away
23. 1.7Andreanof Islands, Aleutian Islands, AlaskaSat, Apr 15, 1:09 PM HADT · 1266 days ago · 4 km deep · 5 km away
24. 1.678 km SW of Adak, AlaskaSat, Apr 15, 4:46 PM HADT · 1266 days ago · 23 km deep · 64 km away
25. 1.899 km W of Adak, AlaskaSun, Apr 16, 12:53 AM HADT · 1265 days ago · 3 km deep · 1 km away
26. 1.699 km W of Adak, AlaskaSun, Apr 16, 5:49 AM HADT · 1265 days ago · 3 km deep · 1 km away
27. 2.4100 km W of Adak, AlaskaSun, Apr 16, 5:50 AM HADT · 1265 days ago · 5 km deep · 0 km away
28. 3.451 km SSW of Adak, AlaskaSun, Apr 16, 1:16 PM HADT · 1265 days ago · 35 km deep · 87 km away
29. 2.798 km W of Adak, AlaskaSun, Apr 16, 6:05 PM HADT · 1264 days ago · 2 km deep · 6 km away
30. 1.797 km W of Adak, AlaskaSun, Apr 16, 6:23 PM HADT · 1264 days ago · -2 km deep · 3 km away
31. 1.697 km W of Adak, AlaskaSun, Apr 16, 6:23 PM HADT · 1264 days ago · -2 km deep · 3 km away
32. 1.697 km W of Adak, AlaskaSun, Apr 16, 6:53 PM HADT · 1264 days ago · -2 km deep · 3 km away
33. 1.6Andreanof Islands, Aleutian Islands, AlaskaSun, Apr 16, 6:54 PM HADT · 1264 days ago · -2 km deep · 3 km away
34. 2.8Andreanof Islands, Aleutian Islands, AlaskaSun, Apr 16, 7:16 PM HADT · 1264 days ago · 21 km deep · 71 km away
35. 1.8Andreanof Islands, Aleutian Islands, AlaskaSun, Apr 16, 7:54 PM HADT · 1264 days ago · 17 km deep · 7 km away
36. 2.297 km W of Adak, AlaskaSun, Apr 16, 8:15 PM HADT · 1264 days ago · 4 km deep · 3 km away
37. 2.297 km W of Adak, AlaskaSun, Apr 16, 8:36 PM HADT · 1264 days ago · 4 km deep · 3 km away
38. 2.496 km W of Adak, AlaskaSun, Apr 16, 8:37 PM HADT · 1264 days ago · 2 km deep · 4 km away
39. 3.059 km SSW of Adak, AlaskaSun, Apr 16, 8:44 PM HADT · 1264 days ago · 35 km deep · 99 km away
40. 2.097 km W of Adak, AlaskaSun, Apr 16, 8:51 PM HADT · 1264 days ago · -2 km deep · 3 km away
41. 1.698 km W of Adak, AlaskaMon, Apr 17, 12:47 AM HADT · 1264 days ago · 3 km deep · 2 km away
42. 2.1113 km WSW of Adak, AlaskaMon, Apr 17, 7:46 AM HADT · 1264 days ago · 17 km deep · 42 km away
43. 2.9Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 17, 9:18 AM HADT · 1264 days ago · 31 km deep · 74 km away
44. 1.7100 km W of Adak, AlaskaMon, Apr 17, 12:26 PM HADT · 1264 days ago · 4 km deep · 1 km away
45. 1.6100 km W of Adak, AlaskaMon, Apr 17, 4:16 PM HADT · 1264 days ago · 3 km deep · 1 km away
46. 2.2Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 17, 4:18 PM HADT · 1264 days ago · 4 km deep · 3 km away
47. 2.3100 km W of Adak, AlaskaMon, Apr 17, 4:43 PM HADT · 1264 days ago · 3 km deep · 1 km away
48. 2.7102 km W of Adak, AlaskaMon, Apr 17, 4:43 PM HADT · 1264 days ago · 5 km deep · 3 km away
49. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 17, 4:44 PM HADT · 1264 days ago · 3 km deep · 1 km away
50. 1.999 km W of Adak, AlaskaMon, Apr 17, 4:48 PM HADT · 1264 days ago · 3 km deep · 1 km away
51. 1.9Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 17, 7:04 PM HADT · 1263 days ago · 4 km deep · 0 km away
52. 3.196 km W of Adak, AlaskaMon, Apr 17, 10:59 PM HADT · 1263 days ago · 5 km deep · 11 km away
53. 1.897 km W of Adak, AlaskaMon, Apr 17, 11:39 PM HADT · 1263 days ago · -2 km deep · 3 km away
54. 3.5112 km SW of Adak, AlaskaTue, Apr 18, 12:57 AM HADT · 1263 days ago · 35 km deep · 81 km away
55. 1.799 km W of Adak, AlaskaTue, Apr 18, 8:22 PM HADT · 1262 days ago · -2 km deep · 1 km away
56. 2.396 km W of Adak, AlaskaWed, Apr 19, 1:37 AM HADT · 1262 days ago · 4 km deep · 5 km away
57. 2.197 km W of Adak, AlaskaWed, Apr 19, 3:19 AM HADT · 1262 days ago · -2 km deep · 4 km away
58. 2.0134 km W of Adak, AlaskaWed, Apr 19, 8:10 AM HADT · 1262 days ago · 20 km deep · 34 km away
59. 2.297 km W of Adak, AlaskaWed, Apr 19, 3:00 PM HADT · 1262 days ago · 3 km deep · 4 km away
60. 1.696 km W of Adak, AlaskaWed, Apr 19, 3:01 PM HADT · 1262 days ago · -1 km deep · 5 km away

The first 60 of at least 202.

Before

1. 2.1128 km WSW of Adak, AlaskaTue, Apr 11, 1:07 PM HADT · 1270 days ago · 41 km deep · 45 km away
2. 3.377 km SW of Adak, AlaskaTue, Apr 11, 6:57 AM HADT · 1270 days ago · 60 km deep · 65 km away
3. 2.070 km WSW of Adak, AlaskaTue, Apr 11, 4:01 AM HADT · 1270 days ago · 64 km deep · 46 km away
4. 2.4120 km W of Adak, AlaskaMon, Apr 10, 10:44 PM HADT · 1270 days ago · 123 km deep · 20 km away
5. 1.528 km WSW of Adak, AlaskaMon, Apr 10, 10:35 PM HADT · 1270 days ago · 11 km deep · 74 km away
6. 1.597 km W of Adak, AlaskaMon, Apr 10, 1:17 PM HADT · 1271 days ago · -2 km deep · 3 km away
7. 1.7100 km W of Adak, AlaskaMon, Apr 10, 12:50 PM HADT · 1271 days ago · 3 km deep · 0 km away
8. 1.699 km W of Adak, AlaskaMon, Apr 10, 12:14 PM HADT · 1271 days ago · 4 km deep · 1 km away
9. 1.7100 km W of Adak, AlaskaMon, Apr 10, 12:02 PM HADT · 1271 days ago · 3 km deep · 1 km away
10. 1.6Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 10, 11:43 AM HADT · 1271 days ago · -2 km deep · 2 km away
11. 2.996 km W of Adak, AlaskaMon, Apr 10, 11:10 AM HADT · 1271 days ago · 10 km deep · 4 km away
12. 1.697 km W of Adak, AlaskaMon, Apr 10, 10:57 AM HADT · 1271 days ago · -2 km deep · 3 km away
13. 2.2Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 10, 8:26 AM HADT · 1271 days ago · -2 km deep · 2 km away
14. 2.195 km W of Adak, AlaskaMon, Apr 10, 4:39 AM HADT · 1271 days ago · 3 km deep · 5 km away
15. 2.034 km WSW of Adak, AlaskaSun, Apr 9, 10:49 PM HADT · 1271 days ago · 79 km deep · 70 km away
16. 2.579 km SW of Adak, AlaskaSun, Apr 9, 9:19 PM HADT · 1271 days ago · 35 km deep · 60 km away
17. 2.0114 km SW of Adak, AlaskaSun, Apr 9, 4:40 PM HADT · 1272 days ago · 18 km deep · 65 km away
18. 1.858 km SSW of Adak, AlaskaSun, Apr 9, 2:28 PM HADT · 1272 days ago · 45 km deep · 83 km away
19. 1.7100 km W of Adak, AlaskaSun, Apr 9, 10:40 AM HADT · 1272 days ago · 3 km deep · 1 km away
20. 1.699 km W of Adak, AlaskaSun, Apr 9, 10:39 AM HADT · 1272 days ago · 4 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91844796. Read Fri, Oct 2, 2026, 1:32 PM UTC.