M1.6 earthquake 81 km W of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Wed, Jan 27, 2021, 7:17 PM HAST

UTC

2021-01-28 05:17:22 UTC

Depth

8.2 km (5.1 mi), shallow

Epicenter

51.857° N, 177.814° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.33

Depth from

From location

Station coverage gap

154°

Stations used

5

After

1. 3.491 km SW of Adak, AlaskaWed, Jan 27, 9:15 PM HAST · 2067 days ago · 23 km deep · 69 km away
2. 2.1134 km WSW of Adak, AlaskaThu, Jan 28, 8:30 AM HAST · 2067 days ago · 20 km deep · 71 km away
3. 2.5Andreanof Islands, Aleutian Islands, AlaskaFri, Jan 29, 7:57 AM HAST · 2066 days ago · 41 km deep · 61 km away
4. 1.885 km WSW of Adak, AlaskaFri, Jan 29, 9:34 AM HAST · 2066 days ago · 72 km deep · 17 km away
5. 1.9Andreanof Islands, Aleutian Islands, AlaskaFri, Jan 29, 1:11 PM HAST · 2065 days ago · 34 km deep · 83 km away
6. 2.1131 km W of Adak, AlaskaFri, Jan 29, 1:42 PM HAST · 2065 days ago · 115 km deep · 51 km away
7. 1.971 km SW of Adak, AlaskaSat, Jan 30, 6:12 AM HAST · 2065 days ago · 43 km deep · 45 km away
8. 2.8138 km SW of Adak, AlaskaSat, Jan 30, 5:25 PM HAST · 2064 days ago · 35 km deep · 88 km away
9. 3.168 km WSW of Adak, AlaskaSun, Jan 31, 2:13 AM HAST · 2064 days ago · 68 km deep · 37 km away
10. 2.0118 km WSW of Adak, AlaskaMon, Feb 1, 1:12 AM HAST · 2063 days ago · 33 km deep · 61 km away
11. 1.874 km SW of Adak, AlaskaMon, Feb 1, 2:21 AM HAST · 2063 days ago · 50 km deep · 64 km away
12. 1.783 km SW of Adak, AlaskaMon, Feb 1, 4:52 AM HAST · 2063 days ago · 47 km deep · 47 km away
13. 1.685 km WSW of Adak, AlaskaMon, Feb 1, 6:50 AM HAST · 2063 days ago · 13 km deep · 32 km away
14. 1.675 km WSW of Adak, AlaskaMon, Feb 1, 9:06 AM HAST · 2063 days ago · 17 km deep · 38 km away
15. 1.979 km WSW of Adak, AlaskaMon, Feb 1, 11:04 AM HAST · 2063 days ago · 67 km deep · 38 km away
16. 1.9178 km WSW of Adak, AlaskaMon, Feb 1, 1:15 PM HAST · 2062 days ago · 1 km deep · 99 km away
17. 1.9130 km SW of Adak, AlaskaMon, Feb 1, 4:28 PM HAST · 2062 days ago · 45 km deep · 80 km away
18. 1.8Andreanof Islands, Aleutian Islands, AlaskaMon, Feb 1, 4:47 PM HAST · 2062 days ago · 43 km deep · 79 km away
19. 2.7121 km SW of Adak, AlaskaTue, Feb 2, 3:29 AM HAST · 2062 days ago · 30 km deep · 73 km away
20. 1.865 km SSW of Adak, AlaskaTue, Feb 2, 5:36 AM HAST · 2062 days ago · 31 km deep · 78 km away
21. 1.87 km SE of Adak, AlaskaTue, Feb 2, 4:20 PM HAST · 2061 days ago · 73 km deep · 86 km away
22. 1.622 km SSE of Adak, AlaskaTue, Feb 2, 5:33 PM HAST · 2061 days ago · 70 km deep · 92 km away
23. 1.697 km SW of Adak, AlaskaTue, Feb 2, 7:07 PM HAST · 2061 days ago · 15 km deep · 66 km away
24. 1.650 km SSW of Adak, AlaskaTue, Feb 2, 7:33 PM HAST · 2061 days ago · 57 km deep · 77 km away
25. 2.530 km WNW of Adak, AlaskaWed, Feb 3, 2:46 AM HAST · 2061 days ago · 10 km deep · 52 km away
26. 1.822 km SSW of Adak, AlaskaWed, Feb 3, 6:39 PM HAST · 2060 days ago · 59 km deep · 75 km away
27. 1.9149 km WSW of Adak, AlaskaWed, Feb 3, 8:34 PM HAST · 2060 days ago · 10 km deep · 75 km away
28. 1.5Andreanof Islands, Aleutian Islands, AlaskaWed, Feb 3, 11:45 PM HAST · 2060 days ago · 7 km deep · 6 km away
29. 1.9120 km SW of Adak, AlaskaThu, Feb 4, 12:38 AM HAST · 2060 days ago · 26 km deep · 69 km away
30. 1.882 km WSW of Adak, AlaskaThu, Feb 4, 8:46 AM HAST · 2060 days ago · 13 km deep · 40 km away
31. 1.787 km WSW of Adak, AlaskaThu, Feb 4, 6:57 PM HAST · 2059 days ago · 44 km deep · 36 km away
32. 3.0103 km SW of Adak, AlaskaThu, Feb 4, 7:03 PM HAST · 2059 days ago · 30 km deep · 78 km away
33. 1.786 km WSW of Adak, AlaskaFri, Feb 5, 1:16 AM HAST · 2059 days ago · 48 km deep · 40 km away
34. 2.730 km WNW of Adak, AlaskaFri, Feb 5, 4:35 AM HAST · 2059 days ago · 13 km deep · 53 km away
35. 3.9112 km SW of Adak, AlaskaFri, Feb 5, 10:38 PM HAST · 2058 days ago · 42 km deep · 65 km away
36. 1.863 km SSW of Adak, AlaskaSat, Feb 6, 3:52 PM HAST · 2057 days ago · 35 km deep · 84 km away
37. 1.9110 km SW of Adak, AlaskaSun, Feb 7, 12:04 AM HAST · 2057 days ago · 45 km deep · 61 km away
38. 1.543 km S of Adak, AlaskaSun, Feb 7, 10:55 PM HAST · 2056 days ago · 30 km deep · 87 km away
39. 1.827 km WNW of Adak, AlaskaSun, Feb 7, 11:08 PM HAST · 2056 days ago · 6 km deep · 55 km away
40. 2.8154 km SW of Adak, AlaskaTue, Feb 9, 4:44 AM HAST · 2055 days ago · 31 km deep · 95 km away
41. 2.575 km SSW of Adak, AlaskaTue, Feb 9, 9:57 AM HAST · 2055 days ago · 35 km deep · 84 km away
42. 1.726 km W of Adak, AlaskaWed, Feb 10, 5:24 AM HAST · 2054 days ago · 8 km deep · 55 km away
43. 1.848 km SW of Adak, AlaskaWed, Feb 10, 3:47 PM HAST · 2053 days ago · 45 km deep · 62 km away
44. 1.753 km W of Adak, AlaskaThu, Feb 11, 6:26 PM HAST · 2052 days ago · -2 km deep · 28 km away
45. 2.8150 km WSW of Adak, AlaskaThu, Feb 11, 11:41 PM HAST · 2052 days ago · 32 km deep · 92 km away
46. 1.581 km WSW of Adak, AlaskaFri, Feb 12, 2:24 AM HAST · 2052 days ago · 25 km deep · 37 km away
47. 3.5173 km WSW of Adak, AlaskaSun, Feb 14, 11:37 PM HAST · 2049 days ago · 10 km deep · 94 km away
48. 1.649 km SSW of Adak, AlaskaMon, Feb 15, 2:19 PM HAST · 2048 days ago · 27 km deep · 70 km away
49. 1.861 km SSW of Adak, AlaskaMon, Feb 15, 4:54 PM HAST · 2048 days ago · 33 km deep · 71 km away
50. 2.656 km S of Adak, AlaskaTue, Feb 16, 4:36 AM HAST · 2048 days ago · 35 km deep · 100 km away
51. 3.9139 km WSW of Adak, AlaskaTue, Feb 16, 6:58 AM HAST · 2048 days ago · 35 km deep · 81 km away
52. 2.678 km SW of Adak, AlaskaTue, Feb 16, 9:00 AM HAST · 2048 days ago · 41 km deep · 51 km away
53. 2.0135 km WSW of Adak, AlaskaTue, Feb 16, 11:10 AM HAST · 2048 days ago · 24 km deep · 75 km away
54. 1.856 km SW of Adak, AlaskaWed, Feb 17, 5:21 AM HAST · 2047 days ago · 57 km deep · 49 km away
55. 1.681 km W of Adak, AlaskaWed, Feb 17, 6:37 AM HAST · 2047 days ago · 4 km deep · 0 km away
56. 1.9126 km WSW of Adak, AlaskaWed, Feb 17, 6:54 AM HAST · 2047 days ago · 26 km deep · 66 km away
57. 2.5122 km WSW of Adak, AlaskaWed, Feb 17, 3:08 PM HAST · 2046 days ago · 75 km deep · 50 km away
58. 2.748 km WSW of Adak, AlaskaThu, Feb 18, 8:40 AM HAST · 2046 days ago · 81 km deep · 39 km away
59. 2.260 km W of Adak, AlaskaThu, Feb 18, 9:34 PM HAST · 2045 days ago · 103 km deep · 25 km away
60. 4.171 km SSW of Adak, AlaskaFri, Feb 19, 5:33 AM HAST · 2045 days ago · 35 km deep · 94 km away · felt by 1

The first 60 of 141.

Before

1. 2.156 km S of Adak, AlaskaWed, Jan 27, 7:39 AM HAST · 2068 days ago · 24 km deep · 97 km away
2. 3.043 km S of Adak, AlaskaMon, Jan 25, 10:24 PM HAST · 2069 days ago · 39 km deep · 86 km away
3. 2.783 km W of Adak, AlaskaSun, Jan 24, 5:09 PM HAST · 2070 days ago · 108 km deep · 5 km away
4. 2.0124 km WSW of Adak, AlaskaSun, Jan 24, 8:33 AM HAST · 2071 days ago · 14 km deep · 61 km away
5. 2.7102 km SW of Adak, AlaskaSun, Jan 24, 7:17 AM HAST · 2071 days ago · 33 km deep · 57 km away
6. 1.9135 km WSW of Adak, AlaskaSat, Jan 23, 12:33 PM HAST · 2071 days ago · 23 km deep · 75 km away
7. 1.623 km SE of Adak, AlaskaSat, Jan 23, 3:51 AM HAST · 2072 days ago · 54 km deep · 99 km away
8. 1.7113 km WSW of Adak, AlaskaSat, Jan 23, 3:11 AM HAST · 2072 days ago · 13 km deep · 47 km away
9. 1.9137 km WSW of Adak, AlaskaFri, Jan 22, 6:31 PM HAST · 2072 days ago · 25 km deep · 70 km away
10. 2.1162 km W of Adak, AlaskaFri, Jan 22, 3:10 PM HAST · 2072 days ago · 92 km deep · 82 km away
11. 1.584 km SW of Adak, AlaskaFri, Jan 22, 2:26 PM HAST · 2072 days ago · 14 km deep · 54 km away
12. 1.9131 km W of Adak, AlaskaFri, Jan 22, 8:55 AM HAST · 2073 days ago · 94 km deep · 52 km away
13. 1.755 km SSW of Adak, AlaskaFri, Jan 22, 12:32 AM HAST · 2073 days ago · 22 km deep · 86 km away
14. 1.539 km S of Adak, AlaskaThu, Jan 21, 11:39 PM HAST · 2073 days ago · 39 km deep · 88 km away
15. 1.633 km SSW of Adak, AlaskaThu, Jan 21, 12:10 AM HAST · 2074 days ago · 36 km deep · 79 km away
16. 1.6126 km WSW of Adak, AlaskaThu, Jan 21, 12:08 AM HAST · 2074 days ago · 7 km deep · 49 km away
17. 2.1126 km WSW of Adak, AlaskaWed, Jan 20, 4:29 PM HAST · 2074 days ago · 7 km deep · 50 km away
18. 2.2152 km WSW of Adak, AlaskaWed, Jan 20, 11:41 AM HAST · 2074 days ago · 22 km deep · 91 km away
19. 2.7157 km WSW of Adak, AlaskaWed, Jan 20, 4:19 AM HAST · 2075 days ago · 17 km deep · 88 km away
20. 1.9133 km WSW of Adak, AlaskaWed, Jan 20, 1:31 AM HAST · 2075 days ago · 26 km deep · 72 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91181186. Read Sat, Sep 26, 2026, 8:58 AM UTC.