M1.6 earthquake 91 km W of Adak, Alaska

Magnitude

1.6 (ML, local (Richter)), micro

Magnitude from

AV

Local time

Tue, Apr 21, 2026, 4:27 AM HADT

UTC

2026-04-21 13:27:21 UTC

Depth

2.5 km (1.5 mi), shallow

Epicenter

51.871° N, 177.966° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 1.4 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

144°

Stations used

6

After

1. 3.7129 km WSW of Adak, AlaskaWed, Apr 22, 2:11 AM HADT · 164 days ago · 10 km deep · 53 km away
2. 3.451 km WSW of Adak, AlaskaWed, Apr 22, 6:42 PM HADT · 163 days ago · 87 km deep · 53 km away
3. 1.5150 km W of Adak, AlaskaThu, Apr 23, 5:44 PM HADT · 162 days ago · 6 km deep · 59 km away
4. 2.7149 km SW of Adak, AlaskaFri, Apr 24, 1:33 AM HADT · 162 days ago · 27 km deep · 88 km away
5. 2.8119 km SW of Adak, AlaskaSat, Apr 25, 3:25 PM HADT · 160 days ago · 35 km deep · 70 km away
6. 2.0128 km WSW of Adak, AlaskaTue, Apr 28, 4:56 PM HADT · 157 days ago · 9 km deep · 51 km away
7. 3.0167 km WSW of Adak, AlaskaThu, Apr 30, 4:33 AM HADT · 156 days ago · 60 km deep · 95 km away
8. 2.6155 km WSW of Adak, AlaskaThu, Apr 30, 6:24 AM HADT · 155 days ago · 43 km deep · 78 km away
9. 2.4134 km WSW of Adak, AlaskaFri, May 1, 12:50 AM HADT · 155 days ago · 2 km deep · 67 km away
10. 2.9119 km WSW of Adak, AlaskaFri, May 1, 1:13 AM HADT · 155 days ago · 35 km deep · 53 km away
11. 2.0125 km WSW of Adak, AlaskaFri, May 1, 2:12 AM HADT · 155 days ago · 82 km deep · 42 km away
12. 2.371 km SSW of Adak, AlaskaFri, May 1, 3:05 AM HADT · 155 days ago · 43 km deep · 84 km away
13. 2.855 km WSW of Adak, AlaskaFri, May 1, 11:34 PM HADT · 154 days ago · 91 km deep · 45 km away
14. 1.8166 km W of Adak, AlaskaSat, May 2, 9:48 PM HADT · 153 days ago · 11 km deep · 76 km away
15. 2.3115 km WSW of Adak, AlaskaSun, May 3, 11:54 AM HADT · 152 days ago · 26 km deep · 61 km away
16. 2.285 km SW of Adak, AlaskaSun, May 3, 3:37 PM HADT · 152 days ago · 37 km deep · 69 km away
17. 2.389 km SW of Adak, AlaskaSun, May 3, 4:00 PM HADT · 152 days ago · 27 km deep · 67 km away
18. 2.7134 km SW of Adak, AlaskaMon, May 4, 2:27 AM HADT · 152 days ago · 4 km deep · 96 km away
19. 2.645 km SSW of Adak, AlaskaTue, May 5, 3:43 AM HADT · 151 days ago · 53 km deep · 86 km away
20. 2.3127 km WSW of Adak, AlaskaTue, May 5, 4:12 AM HADT · 151 days ago · 10 km deep · 50 km away
21. 2.7121 km WSW of Adak, AlaskaWed, May 6, 2:10 AM HADT · 150 days ago · 7 km deep · 62 km away
22. 3.142 km SSW of Adak, AlaskaWed, May 6, 7:26 AM HADT · 149 days ago · 62 km deep · 92 km away
23. 2.056 km SW of Adak, AlaskaWed, May 6, 7:53 PM HADT · 149 days ago · 43 km deep · 75 km away
24. 2.669 km SW of Adak, AlaskaThu, May 7, 5:23 AM HADT · 149 days ago · 43 km deep · 53 km away
25. 2.1168 km W of Adak, AlaskaThu, May 7, 7:17 AM HADT · 148 days ago · 15 km deep · 77 km away
26. 2.5138 km SW of Adak, AlaskaThu, May 7, 7:41 AM HADT · 148 days ago · 35 km deep · 89 km away
27. 2.5140 km SW of Adak, AlaskaThu, May 7, 8:44 AM HADT · 148 days ago · 15 km deep · 93 km away
28. 2.371 km SSW of Adak, AlaskaThu, May 7, 9:32 AM HADT · 148 days ago · 37 km deep · 92 km away
29. 2.2126 km WSW of Adak, AlaskaThu, May 7, 5:00 PM HADT · 148 days ago · 11 km deep · 53 km away
30. 2.396 km SW of Adak, AlaskaThu, May 7, 8:55 PM HADT · 148 days ago · 21 km deep · 70 km away
31. 2.297 km SW of Adak, AlaskaThu, May 7, 9:37 PM HADT · 148 days ago · 19 km deep · 54 km away
32. 1.855 km WSW of Adak, AlaskaThu, May 7, 9:45 PM HADT · 148 days ago · 16 km deep · 41 km away
33. 2.470 km SSW of Adak, AlaskaThu, May 7, 11:58 PM HADT · 148 days ago · 28 km deep · 94 km away
34. 2.374 km SSW of Adak, AlaskaFri, May 8, 1:28 AM HADT · 148 days ago · 33 km deep · 94 km away
35. 2.374 km SSW of Adak, AlaskaFri, May 8, 2:34 AM HADT · 148 days ago · 36 km deep · 93 km away
36. 2.392 km SW of Adak, AlaskaFri, May 8, 3:20 AM HADT · 148 days ago · 19 km deep · 60 km away
37. 2.674 km SSW of Adak, AlaskaFri, May 8, 3:43 AM HADT · 148 days ago · 26 km deep · 95 km away
38. 1.856 km WSW of Adak, AlaskaFri, May 8, 9:12 AM HADT · 147 days ago · 16 km deep · 42 km away
39. 2.3135 km WSW of Adak, AlaskaFri, May 8, 12:03 PM HADT · 147 days ago · 8 km deep · 64 km away
40. 2.3114 km WSW of Adak, AlaskaFri, May 8, 3:54 PM HADT · 147 days ago · 19 km deep · 62 km away
41. 2.3127 km WSW of Adak, AlaskaFri, May 8, 4:00 PM HADT · 147 days ago · 10 km deep · 49 km away
42. 2.477 km SSW of Adak, AlaskaFri, May 8, 10:22 PM HADT · 147 days ago · 31 km deep · 91 km away
43. 2.397 km SW of Adak, AlaskaSat, May 9, 2:42 AM HADT · 147 days ago · 36 km deep · 57 km away
44. 2.353 km W of Adak, AlaskaSat, May 9, 3:37 AM HADT · 147 days ago · 26 km deep · 40 km away
45. 1.856 km WSW of Adak, AlaskaSat, May 9, 6:10 AM HADT · 146 days ago · 15 km deep · 43 km away
46. 2.287 km SW of Adak, AlaskaSat, May 9, 2:01 PM HADT · 146 days ago · 23 km deep · 64 km away
47. 2.3158 km WSW of Adak, AlaskaSat, May 9, 3:16 PM HADT · 146 days ago · 3 km deep · 86 km away
48. 1.937 km SSW of Adak, AlaskaSat, May 9, 3:38 PM HADT · 146 days ago · 12 km deep · 88 km away
49. 2.1123 km WSW of Adak, AlaskaSat, May 9, 5:31 PM HADT · 146 days ago · 11 km deep · 62 km away
50. 2.070 km SSW of Adak, AlaskaSat, May 9, 7:24 PM HADT · 146 days ago · 36 km deep · 92 km away
51. 2.690 km SW of Adak, AlaskaSat, May 9, 7:26 PM HADT · 146 days ago · 13 km deep · 70 km away
52. 2.115 km W of Adak, AlaskaSat, May 9, 11:04 PM HADT · 146 days ago · 9 km deep · 76 km away
53. 2.494 km SW of Adak, AlaskaSun, May 10, 4:32 PM HADT · 145 days ago · 27 km deep · 59 km away
54. 2.386 km SW of Adak, AlaskaSun, May 10, 11:51 PM HADT · 145 days ago · 19 km deep · 60 km away
55. 2.6176 km WSW of Adak, AlaskaMon, May 11, 12:13 AM HADT · 145 days ago · 19 km deep · 91 km away
56. 2.6133 km W of Adak, AlaskaMon, May 11, 12:15 AM HADT · 145 days ago · 109 km deep · 45 km away
57. 1.581 km W of Adak, AlaskaMon, May 11, 1:08 AM HADT · 145 days ago · 8 km deep · 11 km away
58. 3.176 km SSW of Adak, AlaskaMon, May 11, 1:26 AM HADT · 145 days ago · 35 km deep · 93 km away
59. 2.694 km WSW of Adak, AlaskaMon, May 11, 2:11 AM HADT · 145 days ago · 42 km deep · 30 km away
60. 1.9125 km WSW of Adak, AlaskaMon, May 11, 6:37 AM HADT · 144 days ago · 4 km deep · 43 km away

The first 60 of 198.

Before

1. 3.2152 km SW of Adak, AlaskaSun, Apr 19, 8:40 PM HADT · 166 days ago · 22 km deep · 91 km away
2. 1.8161 km W of Adak, AlaskaSun, Apr 19, 5:35 AM HADT · 167 days ago · 8 km deep · 70 km away
3. 3.139 km SW of Adak, AlaskaSun, Apr 19, 4:25 AM HADT · 167 days ago · 63 km deep · 75 km away
4. 3.2101 km WSW of Adak, AlaskaFri, Apr 17, 6:51 PM HADT · 168 days ago · 58 km deep · 52 km away
5. 2.8144 km WSW of Adak, AlaskaFri, Apr 17, 3:47 PM HADT · 168 days ago · 33 km deep · 76 km away
6. 2.5167 km W of Adak, AlaskaThu, Apr 16, 12:04 AM HADT · 170 days ago · 16 km deep · 77 km away
7. 3.1128 km WSW of Adak, AlaskaWed, Apr 15, 10:28 AM HADT · 170 days ago · 32 km deep · 67 km away
8. 2.367 km SSW of Adak, AlaskaTue, Apr 14, 4:59 AM HADT · 172 days ago · 32 km deep · 88 km away
9. 2.6172 km WSW of Adak, AlaskaTue, Apr 14, 12:54 AM HADT · 172 days ago · 13 km deep · 92 km away
10. 2.7139 km WSW of Adak, AlaskaMon, Apr 13, 10:20 PM HADT · 172 days ago · 32 km deep · 73 km away
11. 2.478 km SW of Adak, AlaskaMon, Apr 13, 5:15 PM HADT · 172 days ago · 28 km deep · 68 km away
12. 2.7138 km SW of Adak, AlaskaMon, Apr 13, 12:01 PM HADT · 172 days ago · 28 km deep · 91 km away
13. 2.999 km W of Adak, AlaskaSun, Apr 12, 9:52 AM HADT · 173 days ago · 150 km deep · 13 km away
14. 2.466 km SW of Adak, AlaskaSat, Apr 11, 7:08 PM HADT · 174 days ago · 61 km deep · 57 km away
15. 1.66 km ENE of Adak, AlaskaSat, Apr 11, 4:27 PM HADT · 174 days ago · 15 km deep · 97 km away
16. 2.5155 km WNW of Adak, AlaskaFri, Apr 10, 5:25 AM HADT · 176 days ago · 14 km deep · 87 km away
17. 2.491 km SW of Adak, AlaskaThu, Apr 9, 8:11 PM HADT · 176 days ago · 32 km deep · 54 km away
18. 2.568 km SSW of Adak, AlaskaThu, Apr 9, 9:59 AM HADT · 176 days ago · 35 km deep · 98 km away
19. 2.6171 km W of Adak, AlaskaWed, Apr 8, 8:32 PM HADT · 177 days ago · 10 km deep · 80 km away
20. 2.5132 km WSW of Adak, AlaskaMon, Apr 6, 4:17 AM HADT · 180 days ago · 10 km deep · 60 km away

From the USGS Earthquake Hazards Program and its partner networks, event av94159248. Read Sat, Oct 3, 2026, 2:26 AM UTC.