M1.7 earthquake 53 km W of Adak, Alaska

Magnitude

1.7 (ml), micro

Local time

Thu, Feb 11, 2021, 6:26 PM HAST

UTC

2021-02-12 04:26:20 UTC

Depth

-1.8 km (-1.1 mi), shallow

Epicenter

51.841° N, 177.402° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.7 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.19

Depth from

From location

Station coverage gap

138°

Stations used

8

After

1. 1.581 km WSW of Adak, AlaskaFri, Feb 12, 2:24 AM HAST · 2051 days ago · 25 km deep · 39 km away
2. 1.649 km SSW of Adak, AlaskaMon, Feb 15, 2:19 PM HAST · 2048 days ago · 27 km deep · 48 km away
3. 1.861 km SSW of Adak, AlaskaMon, Feb 15, 4:54 PM HAST · 2048 days ago · 33 km deep · 53 km away
4. 2.656 km S of Adak, AlaskaTue, Feb 16, 4:36 AM HAST · 2047 days ago · 35 km deep · 76 km away
5. 3.9139 km WSW of Adak, AlaskaTue, Feb 16, 6:58 AM HAST · 2047 days ago · 35 km deep · 96 km away
6. 2.678 km SW of Adak, AlaskaTue, Feb 16, 9:00 AM HAST · 2047 days ago · 41 km deep · 46 km away
7. 2.0135 km WSW of Adak, AlaskaTue, Feb 16, 11:10 AM HAST · 2047 days ago · 24 km deep · 90 km away
8. 1.945 km SSE of Adak, AlaskaWed, Feb 17, 3:20 AM HAST · 2046 days ago · 48 km deep · 78 km away
9. 1.856 km SW of Adak, AlaskaWed, Feb 17, 5:21 AM HAST · 2046 days ago · 57 km deep · 32 km away
10. 1.681 km W of Adak, AlaskaWed, Feb 17, 6:37 AM HAST · 2046 days ago · 4 km deep · 29 km away
11. 1.9126 km WSW of Adak, AlaskaWed, Feb 17, 6:54 AM HAST · 2046 days ago · 26 km deep · 81 km away
12. 1.766 km SSE of Adak, AlaskaWed, Feb 17, 8:45 AM HAST · 2046 days ago · 14 km deep · 92 km away
13. 2.5122 km WSW of Adak, AlaskaWed, Feb 17, 3:08 PM HAST · 2046 days ago · 75 km deep · 72 km away
14. 2.748 km WSW of Adak, AlaskaThu, Feb 18, 8:40 AM HAST · 2045 days ago · 81 km deep · 15 km away
15. 2.059 km SE of Adak, AlaskaThu, Feb 18, 8:48 PM HAST · 2045 days ago · 41 km deep · 100 km away
16. 2.260 km W of Adak, AlaskaThu, Feb 18, 9:34 PM HAST · 2045 days ago · 103 km deep · 15 km away
17. 4.171 km SSW of Adak, AlaskaFri, Feb 19, 5:33 AM HAST · 2044 days ago · 35 km deep · 75 km away · felt by 1
18. 3.6136 km WSW of Adak, AlaskaFri, Feb 19, 9:36 AM HAST · 2044 days ago · 19 km deep · 91 km away
19. 1.519 km SW of Adak, AlaskaFri, Feb 19, 10:28 PM HAST · 2044 days ago · 73 km deep · 43 km away
20. 1.864 km SSE of Adak, AlaskaSat, Feb 20, 2:09 AM HAST · 2043 days ago · 22 km deep · 95 km away
21. 1.856 km SW of Adak, AlaskaSat, Feb 20, 4:11 AM HAST · 2043 days ago · 30 km deep · 34 km away
22. 2.4109 km W of Adak, AlaskaSat, Feb 20, 4:41 AM HAST · 2043 days ago · 188 km deep · 57 km away
23. 1.9117 km WSW of Adak, AlaskaSat, Feb 20, 5:02 PM HAST · 2043 days ago · 27 km deep · 70 km away
24. 1.964 km SSW of Adak, AlaskaSat, Feb 20, 10:33 PM HAST · 2043 days ago · 27 km deep · 61 km away
25. 2.1111 km W of Adak, AlaskaSat, Feb 20, 11:28 PM HAST · 2043 days ago · 80 km deep · 58 km away
26. 1.7126 km WSW of Adak, AlaskaSun, Feb 21, 12:42 AM HAST · 2043 days ago · 13 km deep · 74 km away
27. 2.781 km WSW of Adak, AlaskaSun, Feb 21, 2:30 AM HAST · 2042 days ago · 79 km deep · 32 km away
28. 2.899 km WSW of Adak, AlaskaSun, Feb 21, 1:24 PM HAST · 2042 days ago · 34 km deep · 56 km away
29. 1.9134 km SW of Adak, AlaskaMon, Feb 22, 12:33 PM HAST · 2041 days ago · 41 km deep · 95 km away
30. 2.039 km W of Adak, AlaskaMon, Feb 22, 2:40 PM HAST · 2041 days ago · 98 km deep · 15 km away
31. 1.835 km SSE of Adak, AlaskaMon, Feb 22, 3:51 PM HAST · 2041 days ago · 49 km deep · 68 km away
32. 1.845 km SW of Adak, AlaskaMon, Feb 22, 7:25 PM HAST · 2041 days ago · 63 km deep · 37 km away
33. 1.8139 km WSW of Adak, AlaskaMon, Feb 22, 8:06 PM HAST · 2041 days ago · 25 km deep · 93 km away
34. 2.893 km WSW of Adak, AlaskaTue, Feb 23, 12:58 AM HAST · 2041 days ago · 35 km deep · 54 km away
35. 1.876 km SSW of Adak, AlaskaTue, Feb 23, 4:38 PM HAST · 2040 days ago · 36 km deep · 65 km away
36. 1.762 km SW of Adak, AlaskaTue, Feb 23, 6:09 PM HAST · 2040 days ago · 33 km deep · 38 km away
37. 1.587 km W of Adak, AlaskaWed, Feb 24, 1:29 AM HAST · 2040 days ago · 5 km deep · 35 km away
38. 2.0143 km WSW of Adak, AlaskaWed, Feb 24, 11:09 PM HAST · 2039 days ago · 25 km deep · 95 km away
39. 2.729 km N of Adak, AlaskaThu, Feb 25, 5:58 AM HAST · 2038 days ago · 142 km deep · 63 km away
40. 1.936 km ESE of Adak, AlaskaThu, Feb 25, 1:15 PM HAST · 2038 days ago · 71 km deep · 88 km away
41. 2.074 km WSW of Adak, AlaskaFri, Feb 26, 8:00 AM HAST · 2037 days ago · 66 km deep · 31 km away
42. 1.763 km SSW of Adak, AlaskaFri, Feb 26, 2:13 PM HAST · 2037 days ago · 27 km deep · 62 km away
43. 1.8128 km WSW of Adak, AlaskaSat, Feb 27, 1:22 AM HAST · 2037 days ago · 13 km deep · 76 km away
44. 1.754 km S of Adak, AlaskaSat, Feb 27, 6:32 AM HAST · 2036 days ago · 22 km deep · 78 km away
45. 1.546 km SSE of Adak, AlaskaSat, Feb 27, 9:11 PM HAST · 2036 days ago · 28 km deep · 82 km away
46. 2.0116 km WSW of Adak, AlaskaSat, Feb 27, 9:33 PM HAST · 2036 days ago · 85 km deep · 64 km away
47. 2.655 km SSW of Adak, AlaskaWed, Mar 3, 1:08 PM HAST · 2032 days ago · 35 km deep · 54 km away
48. 3.549 km SSW of Adak, AlaskaThu, Mar 4, 2:39 AM HAST · 2031 days ago · 38 km deep · 54 km away
49. 1.952 km SSW of Adak, AlaskaFri, Mar 5, 12:22 PM HAST · 2030 days ago · 37 km deep · 57 km away
50. 2.537 km NE of Adak, AlaskaFri, Mar 5, 1:36 PM HAST · 2030 days ago · 110 km deep · 83 km away
51. 3.522 km NNW of Adak, AlaskaFri, Mar 5, 8:22 PM HAST · 2030 days ago · 153 km deep · 49 km away
52. 2.8113 km WSW of Adak, AlaskaSat, Mar 6, 8:55 PM HAST · 2029 days ago · 17 km deep · 67 km away
53. 1.7Andreanof Islands, Aleutian Islands, AlaskaMon, Mar 8, 4:04 AM HAST · 2027 days ago · 23 km deep · 100 km away
54. 2.0119 km W of Adak, AlaskaMon, Mar 8, 8:28 AM HAST · 2027 days ago · 9 km deep · 67 km away
55. 3.1123 km WSW of Adak, AlaskaMon, Mar 8, 1:52 PM HAST · 2027 days ago · 30 km deep · 81 km away
56. 1.6117 km W of Adak, AlaskaMon, Mar 8, 3:59 PM HAST · 2027 days ago · 15 km deep · 64 km away
57. 1.8122 km WSW of Adak, AlaskaMon, Mar 8, 6:31 PM HAST · 2027 days ago · 13 km deep · 70 km away
58. 1.9130 km WSW of Adak, AlaskaMon, Mar 8, 10:44 PM HAST · 2027 days ago · 45 km deep · 85 km away
59. 1.5127 km WSW of Adak, AlaskaTue, Mar 9, 11:45 PM HAST · 2026 days ago · 18 km deep · 81 km away
60. 1.584 km W of Adak, AlaskaWed, Mar 10, 1:11 AM HAST · 2026 days ago · 8 km deep · 32 km away

The first 60 of 132.

Before

1. 1.848 km SW of Adak, AlaskaWed, Feb 10, 3:47 PM HAST · 2053 days ago · 45 km deep · 41 km away
2. 1.726 km W of Adak, AlaskaWed, Feb 10, 5:24 AM HAST · 2053 days ago · 8 km deep · 27 km away
3. 2.575 km SSW of Adak, AlaskaTue, Feb 9, 9:57 AM HAST · 2054 days ago · 35 km deep · 69 km away
4. 1.827 km WNW of Adak, AlaskaSun, Feb 7, 11:08 PM HAST · 2056 days ago · 6 km deep · 27 km away
5. 1.543 km S of Adak, AlaskaSun, Feb 7, 10:55 PM HAST · 2056 days ago · 30 km deep · 63 km away
6. 3.560 km SE of Adak, AlaskaSun, Feb 7, 9:37 PM HAST · 2056 days ago · 34 km deep · 100 km away
7. 1.9110 km SW of Adak, AlaskaSun, Feb 7, 12:04 AM HAST · 2057 days ago · 45 km deep · 70 km away
8. 2.030 km E of Adak, AlaskaSat, Feb 6, 8:40 PM HAST · 2057 days ago · 77 km deep · 83 km away
9. 1.863 km SSW of Adak, AlaskaSat, Feb 6, 3:52 PM HAST · 2057 days ago · 35 km deep · 65 km away
10. 3.9112 km SW of Adak, AlaskaFri, Feb 5, 10:38 PM HAST · 2058 days ago · 42 km deep · 73 km away
11. 2.158 km SSE of Adak, AlaskaFri, Feb 5, 5:56 AM HAST · 2058 days ago · 23 km deep · 89 km away
12. 2.730 km WNW of Adak, AlaskaFri, Feb 5, 4:35 AM HAST · 2058 days ago · 13 km deep · 27 km away
13. 1.786 km WSW of Adak, AlaskaFri, Feb 5, 1:16 AM HAST · 2059 days ago · 48 km deep · 44 km away
14. 3.0103 km SW of Adak, AlaskaThu, Feb 4, 7:03 PM HAST · 2059 days ago · 30 km deep · 76 km away
15. 1.787 km WSW of Adak, AlaskaThu, Feb 4, 6:57 PM HAST · 2059 days ago · 44 km deep · 42 km away
16. 1.882 km WSW of Adak, AlaskaThu, Feb 4, 8:46 AM HAST · 2059 days ago · 13 km deep · 42 km away
17. 1.9120 km SW of Adak, AlaskaThu, Feb 4, 12:38 AM HAST · 2060 days ago · 26 km deep · 80 km away
18. 1.5Andreanof Islands, Aleutian Islands, AlaskaWed, Feb 3, 11:45 PM HAST · 2060 days ago · 7 km deep · 26 km away
19. 1.9149 km WSW of Adak, AlaskaWed, Feb 3, 8:34 PM HAST · 2060 days ago · 10 km deep · 98 km away
20. 1.822 km SSW of Adak, AlaskaWed, Feb 3, 6:39 PM HAST · 2060 days ago · 59 km deep · 47 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91188871. Read Fri, Sep 25, 2026, 11:32 PM UTC.