M1.6 earthquake 99 km W of Adak, Alaska

Magnitude

1.6 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Fri, Mar 17, 2023, 9:20 AM HADT

UTC

2023-03-17 18:20:33 UTC

Depth

3.6 km (2.2 mi), shallow

Epicenter

51.852° N, 178.085° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

211°, poorly surrounded by stations

Stations used

5

After

1. 1.582 km W of Adak, AlaskaFri, Mar 17, 10:16 AM HADT · 1295 days ago · 8 km deep · 17 km away
2. 1.891 km W of Adak, AlaskaFri, Mar 17, 11:14 AM HADT · 1295 days ago · 4 km deep · 9 km away
3. 1.5100 km W of Adak, AlaskaFri, Mar 17, 12:43 PM HADT · 1295 days ago · 4 km deep · 1 km away
4. 1.9Andreanof Islands, Aleutian Islands, AlaskaFri, Mar 17, 4:18 PM HADT · 1295 days ago · 33 km deep · 48 km away
5. 2.1100 km W of Adak, AlaskaFri, Mar 17, 5:32 PM HADT · 1294 days ago · 5 km deep · 1 km away
6. 1.862 km SSW of Adak, AlaskaFri, Mar 17, 6:25 PM HADT · 1294 days ago · 38 km deep · 94 km away
7. 1.992 km SW of Adak, AlaskaFri, Mar 17, 6:55 PM HADT · 1294 days ago · 53 km deep · 55 km away
8. 1.9101 km W of Adak, AlaskaFri, Mar 17, 7:23 PM HADT · 1294 days ago · 3 km deep · 3 km away
9. 2.0101 km W of Adak, AlaskaFri, Mar 17, 11:38 PM HADT · 1294 days ago · 6 km deep · 2 km away
10. 1.899 km W of Adak, AlaskaFri, Mar 17, 11:47 PM HADT · 1294 days ago · 3 km deep · 0 km away
11. 2.699 km W of Adak, AlaskaSat, Mar 18, 1:31 AM HADT · 1294 days ago · 5 km deep · 1 km away
12. 1.5100 km W of Adak, AlaskaSat, Mar 18, 2:32 AM HADT · 1294 days ago · 3 km deep · 1 km away
13. 2.0Andreanof Islands, Aleutian Islands, AlaskaSat, Mar 18, 4:56 AM HADT · 1294 days ago · 7 km deep · 1 km away
14. 1.8101 km W of Adak, AlaskaSat, Mar 18, 5:40 AM HADT · 1294 days ago · 6 km deep · 2 km away
15. 1.5114 km W of Adak, AlaskaSat, Mar 18, 7:41 AM HADT · 1294 days ago · 18 km deep · 16 km away
16. 1.9100 km W of Adak, AlaskaSat, Mar 18, 8:01 AM HADT · 1294 days ago · 4 km deep · 1 km away
17. 1.799 km W of Adak, AlaskaSat, Mar 18, 11:10 AM HADT · 1294 days ago · 4 km deep · 0 km away
18. 2.197 km W of Adak, AlaskaSat, Mar 18, 12:35 PM HADT · 1294 days ago · 4 km deep · 3 km away
19. 2.8128 km W of Adak, AlaskaSat, Mar 18, 12:58 PM HADT · 1294 days ago · 179 km deep · 37 km away
20. 1.799 km W of Adak, AlaskaSat, Mar 18, 4:26 PM HADT · 1294 days ago · 3 km deep · 0 km away
21. 1.793 km W of Adak, AlaskaSat, Mar 18, 10:00 PM HADT · 1293 days ago · 3 km deep · 6 km away
22. 1.6100 km W of Adak, AlaskaSat, Mar 18, 10:12 PM HADT · 1293 days ago · 3 km deep · 1 km away
23. 2.6100 km W of Adak, AlaskaSat, Mar 18, 10:42 PM HADT · 1293 days ago · 8 km deep · 2 km away
24. 1.796 km W of Adak, AlaskaSun, Mar 19, 3:09 AM HADT · 1293 days ago · 7 km deep · 4 km away
25. 1.6100 km W of Adak, AlaskaSun, Mar 19, 5:42 AM HADT · 1293 days ago · 3 km deep · 0 km away
26. 1.7100 km W of Adak, AlaskaSun, Mar 19, 6:21 AM HADT · 1293 days ago · 3 km deep · 1 km away
27. 2.3100 km W of Adak, AlaskaSun, Mar 19, 6:55 AM HADT · 1293 days ago · 4 km deep · 0 km away
28. 3.099 km W of Adak, AlaskaSun, Mar 19, 12:19 PM HADT · 1293 days ago · 5 km deep · 5 km away
29. 1.5100 km W of Adak, AlaskaMon, Mar 20, 1:16 AM HADT · 1292 days ago · 3 km deep · 1 km away
30. 1.899 km W of Adak, AlaskaMon, Mar 20, 1:43 AM HADT · 1292 days ago · 3 km deep · 0 km away
31. 1.993 km W of Adak, AlaskaMon, Mar 20, 4:03 AM HADT · 1292 days ago · -2 km deep · 6 km away
32. 1.799 km W of Adak, AlaskaMon, Mar 20, 5:26 AM HADT · 1292 days ago · 3 km deep · 0 km away
33. 1.599 km W of Adak, AlaskaMon, Mar 20, 6:28 AM HADT · 1292 days ago · 3 km deep · 1 km away
34. 2.5100 km W of Adak, AlaskaMon, Mar 20, 8:18 AM HADT · 1292 days ago · 8 km deep · 4 km away
35. 2.1100 km W of Adak, AlaskaMon, Mar 20, 11:48 AM HADT · 1292 days ago · 5 km deep · 1 km away
36. 2.497 km W of Adak, AlaskaMon, Mar 20, 12:21 PM HADT · 1292 days ago · 4 km deep · 3 km away
37. 2.3Andreanof Islands, Aleutian Islands, AlaskaMon, Mar 20, 12:47 PM HADT · 1292 days ago · 1 km deep · 2 km away
38. 2.298 km W of Adak, AlaskaMon, Mar 20, 1:15 PM HADT · 1292 days ago · 2 km deep · 2 km away
39. 2.3100 km W of Adak, AlaskaMon, Mar 20, 2:08 PM HADT · 1292 days ago · 3 km deep · 1 km away
40. 1.699 km W of Adak, AlaskaMon, Mar 20, 9:32 PM HADT · 1291 days ago · -2 km deep · 1 km away
41. 2.299 km W of Adak, AlaskaTue, Mar 21, 12:41 AM HADT · 1291 days ago · 4 km deep · 0 km away
42. 1.6100 km W of Adak, AlaskaTue, Mar 21, 1:23 AM HADT · 1291 days ago · -2 km deep · 1 km away
43. 2.6137 km WSW of Adak, AlaskaTue, Mar 21, 2:14 AM HADT · 1291 days ago · 10 km deep · 70 km away
44. 1.599 km W of Adak, AlaskaTue, Mar 21, 2:20 AM HADT · 1291 days ago · 3 km deep · 1 km away
45. 2.3105 km W of Adak, AlaskaTue, Mar 21, 3:08 AM HADT · 1291 days ago · 6 km deep · 5 km away
46. 1.8102 km W of Adak, AlaskaTue, Mar 21, 3:20 AM HADT · 1291 days ago · 6 km deep · 3 km away
47. 2.0100 km W of Adak, AlaskaTue, Mar 21, 4:06 AM HADT · 1291 days ago · 3 km deep · 0 km away
48. 1.694 km W of Adak, AlaskaTue, Mar 21, 4:08 AM HADT · 1291 days ago · 2 km deep · 5 km away
49. 1.999 km W of Adak, AlaskaTue, Mar 21, 5:51 AM HADT · 1291 days ago · -2 km deep · 1 km away
50. 1.799 km W of Adak, AlaskaTue, Mar 21, 5:52 AM HADT · 1291 days ago · 3 km deep · 0 km away
51. 1.697 km W of Adak, AlaskaTue, Mar 21, 5:54 AM HADT · 1291 days ago · -2 km deep · 3 km away
52. 1.793 km W of Adak, AlaskaTue, Mar 21, 6:44 AM HADT · 1291 days ago · 7 km deep · 7 km away
53. 1.792 km W of Adak, AlaskaTue, Mar 21, 6:54 AM HADT · 1291 days ago · 6 km deep · 8 km away
54. 2.599 km W of Adak, AlaskaTue, Mar 21, 7:15 AM HADT · 1291 days ago · 4 km deep · 1 km away
55. 1.6100 km W of Adak, AlaskaTue, Mar 21, 7:57 AM HADT · 1291 days ago · 2 km deep · 1 km away
56. 2.0101 km W of Adak, AlaskaTue, Mar 21, 9:23 AM HADT · 1291 days ago · 3 km deep · 2 km away
57. 2.299 km W of Adak, AlaskaTue, Mar 21, 10:13 AM HADT · 1291 days ago · 5 km deep · 2 km away
58. 1.799 km W of Adak, AlaskaTue, Mar 21, 10:37 AM HADT · 1291 days ago · 3 km deep · 0 km away
59. 1.6100 km W of Adak, AlaskaTue, Mar 21, 3:02 PM HADT · 1291 days ago · 4 km deep · 1 km away
60. 2.5Andreanof Islands, Aleutian Islands, AlaskaTue, Mar 21, 6:24 PM HADT · 1290 days ago · 8 km deep · 6 km away

The first 60 of at least 202.

Before

1. 2.2100 km W of Adak, AlaskaFri, Mar 17, 9:19 AM HADT · 1295 days ago · 5 km deep · 1 km away
2. 1.9Andreanof Islands, Aleutian Islands, AlaskaFri, Mar 17, 9:13 AM HADT · 1295 days ago · 5 km deep · 3 km away
3. 1.786 km W of Adak, AlaskaFri, Mar 17, 7:40 AM HADT · 1295 days ago · 5 km deep · 13 km away
4. 1.989 km W of Adak, AlaskaFri, Mar 17, 7:09 AM HADT · 1295 days ago · 4 km deep · 11 km away
5. 2.4100 km W of Adak, AlaskaFri, Mar 17, 6:30 AM HADT · 1295 days ago · 5 km deep · 2 km away
6. 1.690 km W of Adak, AlaskaFri, Mar 17, 5:47 AM HADT · 1295 days ago · 3 km deep · 10 km away
7. 2.290 km W of Adak, AlaskaFri, Mar 17, 5:21 AM HADT · 1295 days ago · 6 km deep · 9 km away
8. 2.090 km W of Adak, AlaskaFri, Mar 17, 4:53 AM HADT · 1295 days ago · 4 km deep · 10 km away
9. 1.989 km W of Adak, AlaskaFri, Mar 17, 3:00 AM HADT · 1295 days ago · 5 km deep · 12 km away
10. 2.188 km W of Adak, AlaskaFri, Mar 17, 2:59 AM HADT · 1295 days ago · 6 km deep · 12 km away
11. 1.989 km W of Adak, AlaskaFri, Mar 17, 2:52 AM HADT · 1295 days ago · 6 km deep · 11 km away
12. 2.088 km W of Adak, AlaskaFri, Mar 17, 2:48 AM HADT · 1295 days ago · 6 km deep · 12 km away
13. 2.1100 km W of Adak, AlaskaFri, Mar 17, 1:53 AM HADT · 1295 days ago · 5 km deep · 1 km away
14. 1.898 km W of Adak, AlaskaFri, Mar 17, 1:40 AM HADT · 1295 days ago · 4 km deep · 2 km away
15. 1.653 km SSW of Adak, AlaskaFri, Mar 17, 1:24 AM HADT · 1295 days ago · 28 km deep · 86 km away
16. 1.952 km SW of Adak, AlaskaFri, Mar 17, 1:14 AM HADT · 1295 days ago · 34 km deep · 82 km away
17. 1.590 km W of Adak, AlaskaFri, Mar 17, 12:54 AM HADT · 1295 days ago · 3 km deep · 10 km away
18. 1.798 km W of Adak, AlaskaFri, Mar 17, 12:17 AM HADT · 1295 days ago · -2 km deep · 2 km away
19. 1.6100 km W of Adak, AlaskaFri, Mar 17, 12:16 AM HADT · 1295 days ago · 3 km deep · 1 km away
20. 1.8Andreanof Islands, Aleutian Islands, AlaskaFri, Mar 17, 12:10 AM HADT · 1295 days ago · 5 km deep · 11 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91809731. Read Fri, Oct 2, 2026, 1:33 PM UTC.