M1.8 earthquake 57 km W of Adak, Alaska

Magnitude

1.8 (ml), micro

Local time

Tue, May 4, 2021, 11:20 PM HADT

UTC

2021-05-05 08:20:23 UTC

Depth

-1.8 km (-1.1 mi), shallow

Epicenter

51.831° N, 177.462° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.1 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

139°

Stations used

13

After

1. 2.0148 km WSW of Adak, AlaskaWed, May 5, 4:08 AM HADT · 1970 days ago · 9 km deep · 95 km away
2. 2.057 km W of Adak, AlaskaWed, May 5, 9:18 PM HADT · 1969 days ago · -2 km deep · 1 km away
3. 1.777 km W of Adak, AlaskaThu, May 6, 7:39 AM HADT · 1969 days ago · 3 km deep · 20 km away
4. 1.776 km W of Adak, AlaskaThu, May 6, 10:17 AM HADT · 1969 days ago · 1 km deep · 20 km away
5. 2.057 km W of Adak, AlaskaFri, May 7, 5:33 AM HADT · 1968 days ago · -2 km deep · 0 km away
6. 1.956 km W of Adak, AlaskaFri, May 7, 5:33 AM HADT · 1968 days ago · 11 km deep · 5 km away
7. 1.934 km ENE of Adak, AlaskaThu, May 13, 1:55 AM HADT · 1962 days ago · 132 km deep · 91 km away
8. 1.963 km W of Adak, AlaskaThu, May 13, 7:23 AM HADT · 1962 days ago · 103 km deep · 7 km away
9. 1.974 km SW of Adak, AlaskaThu, May 13, 7:39 PM HADT · 1961 days ago · 26 km deep · 40 km away
10. 1.8131 km WSW of Adak, AlaskaThu, May 13, 10:11 PM HADT · 1961 days ago · 12 km deep · 75 km away
11. 1.652 km SW of Adak, AlaskaFri, May 14, 8:56 AM HADT · 1961 days ago · 45 km deep · 41 km away
12. 3.831 km SSE of Adak, AlaskaFri, May 14, 12:55 PM HADT · 1961 days ago · 50 km deep · 77 km away
13. 1.957 km SSE of Adak, AlaskaSun, May 16, 10:59 AM HADT · 1959 days ago · 26 km deep · 96 km away
14. 1.5131 km WSW of Adak, AlaskaMon, May 17, 3:49 AM HADT · 1958 days ago · 5 km deep · 75 km away
15. 4.2122 km WSW of Adak, AlaskaWed, May 19, 6:05 PM HADT · 1956 days ago · 35 km deep · 68 km away
16. 3.975 km WSW of Adak, AlaskaThu, May 20, 10:24 AM HADT · 1955 days ago · 68 km deep · 33 km away
17. 1.979 km W of Adak, AlaskaThu, May 20, 8:56 PM HADT · 1954 days ago · 9 km deep · 23 km away
18. 1.6141 km WSW of Adak, AlaskaFri, May 21, 3:15 AM HADT · 1954 days ago · 23 km deep · 85 km away
19. 1.581 km W of Adak, AlaskaSun, May 23, 10:39 AM HADT · 1952 days ago · 8 km deep · 24 km away
20. 3.1144 km W of Adak, AlaskaSun, May 23, 12:06 PM HADT · 1952 days ago · 81 km deep · 88 km away
21. 1.539 km NE of Adak, AlaskaTue, May 25, 4:30 PM HADT · 1950 days ago · 10 km deep · 91 km away
22. 1.637 km NE of Adak, AlaskaTue, May 25, 5:25 PM HADT · 1950 days ago · 10 km deep · 89 km away
23. 1.638 km NE of Adak, AlaskaTue, May 25, 7:48 PM HADT · 1949 days ago · 8 km deep · 90 km away
24. 1.5125 km WSW of Adak, AlaskaTue, May 25, 11:51 PM HADT · 1949 days ago · 15 km deep · 69 km away
25. 4.065 km SW of Adak, AlaskaWed, May 26, 3:41 PM HADT · 1949 days ago · 43 km deep · 53 km away
26. 2.7154 km W of Adak, AlaskaThu, May 27, 11:33 AM HADT · 1948 days ago · 90 km deep · 97 km away
27. 1.9128 km WSW of Adak, AlaskaFri, May 28, 7:28 PM HADT · 1946 days ago · 42 km deep · 79 km away
28. 2.0108 km WSW of Adak, AlaskaSat, May 29, 6:57 AM HADT · 1946 days ago · 48 km deep · 60 km away
29. 4.246 km SW of Adak, AlaskaSun, May 30, 1:56 AM HADT · 1945 days ago · 48 km deep · 36 km away
30. 1.7120 km WSW of Adak, AlaskaSun, May 30, 6:11 PM HADT · 1945 days ago · 26 km deep · 68 km away
31. 1.750 km W of Adak, AlaskaSun, May 30, 7:01 PM HADT · 1945 days ago · 71 km deep · 8 km away
32. 2.039 km ESE of Adak, AlaskaMon, May 31, 12:48 AM HADT · 1944 days ago · 62 km deep · 95 km away
33. 3.482 km SW of Adak, AlaskaMon, May 31, 2:54 PM HADT · 1944 days ago · 45 km deep · 47 km away
34. 1.6127 km WSW of Adak, AlaskaSun, Jun 6, 11:37 AM HADT · 1938 days ago · 7 km deep · 71 km away
35. 2.754 km WSW of Adak, AlaskaThu, Jun 10, 9:48 PM HADT · 1933 days ago · 96 km deep · 10 km away
36. 2.158 km W of Adak, AlaskaThu, Jun 10, 9:48 PM HADT · 1933 days ago · 88 km deep · 8 km away
37. 1.7133 km WSW of Adak, AlaskaFri, Jun 11, 12:04 PM HADT · 1933 days ago · 9 km deep · 76 km away
38. 3.0150 km WSW of Adak, AlaskaFri, Jun 11, 9:19 PM HADT · 1932 days ago · 18 km deep · 97 km away
39. 2.6144 km WSW of Adak, AlaskaFri, Jun 11, 9:19 PM HADT · 1932 days ago · 9 km deep · 90 km away
40. 1.640 km ENE of Adak, AlaskaSat, Jun 12, 6:43 AM HADT · 1932 days ago · 154 km deep · 95 km away
41. 1.6154 km WSW of Adak, AlaskaWed, Jun 16, 2:27 PM HADT · 1928 days ago · 8 km deep · 100 km away
42. 1.5111 km WSW of Adak, AlaskaFri, Jun 18, 4:54 AM HADT · 1926 days ago · 12 km deep · 57 km away
43. 1.754 km SSE of Adak, AlaskaFri, Jun 18, 5:54 AM HADT · 1926 days ago · 27 km deep · 85 km away
44. 1.8130 km WSW of Adak, AlaskaFri, Jun 18, 9:39 AM HADT · 1926 days ago · 45 km deep · 81 km away
45. 2.776 km W of Adak, AlaskaFri, Jun 18, 2:45 PM HADT · 1926 days ago · 110 km deep · 20 km away
46. 1.8137 km WSW of Adak, AlaskaSat, Jun 19, 3:43 PM HADT · 1925 days ago · 16 km deep · 81 km away
47. 1.642 km ENE of Adak, AlaskaTue, Jun 22, 3:23 PM HADT · 1922 days ago · 3 km deep · 97 km away
48. 1.6145 km W of Adak, AlaskaTue, Jun 22, 7:49 PM HADT · 1921 days ago · 7 km deep · 88 km away
49. 1.898 km SW of Adak, AlaskaTue, Jun 22, 9:40 PM HADT · 1921 days ago · 38 km deep · 61 km away
50. 1.5133 km WSW of Adak, AlaskaTue, Jun 22, 10:30 PM HADT · 1921 days ago · 14 km deep · 77 km away
51. 1.888 km W of Adak, AlaskaSun, Jun 27, 3:19 PM HADT · 1917 days ago · 8 km deep · 32 km away
52. 1.652 km SSW of Adak, AlaskaSun, Jun 27, 4:32 PM HADT · 1917 days ago · 35 km deep · 48 km away
53. 1.769 km WSW of Adak, AlaskaSun, Jun 27, 9:57 PM HADT · 1916 days ago · 52 km deep · 27 km away
54. 1.8133 km WSW of Adak, AlaskaMon, Jun 28, 4:51 AM HADT · 1916 days ago · 22 km deep · 80 km away
55. 2.9107 km WSW of Adak, AlaskaMon, Jun 28, 5:40 AM HADT · 1916 days ago · 49 km deep · 60 km away
56. 1.6123 km WSW of Adak, AlaskaMon, Jun 28, 9:13 AM HADT · 1916 days ago · 42 km deep · 73 km away
57. 1.524 km E of Adak, AlaskaMon, Jun 28, 10:58 AM HADT · 1916 days ago · 72 km deep · 81 km away
58. 1.7138 km WSW of Adak, AlaskaMon, Jun 28, 11:58 AM HADT · 1916 days ago · 41 km deep · 88 km away
59. 1.7126 km WSW of Adak, AlaskaMon, Jun 28, 2:06 PM HADT · 1916 days ago · 25 km deep · 75 km away
60. 1.8131 km WSW of Adak, AlaskaWed, Jun 30, 6:15 PM HADT · 1914 days ago · 13 km deep · 74 km away

The first 60 of 72.

Before

1. 1.9124 km WSW of Adak, AlaskaTue, May 4, 12:51 PM HADT · 1971 days ago · 27 km deep · 76 km away
2. 1.849 km SE of Adak, AlaskaTue, May 4, 9:15 AM HADT · 1971 days ago · 30 km deep · 94 km away
3. 1.8131 km WSW of Adak, AlaskaTue, May 4, 3:42 AM HADT · 1971 days ago · 13 km deep · 76 km away
4. 1.767 km WSW of Adak, AlaskaMon, May 3, 8:00 PM HADT · 1971 days ago · 72 km deep · 19 km away
5. 1.727 km ESE of Adak, AlaskaThu, Apr 29, 11:00 AM HADT · 1976 days ago · 98 km deep · 82 km away
6. 2.0138 km WSW of Adak, AlaskaThu, Apr 29, 1:08 AM HADT · 1976 days ago · 26 km deep · 88 km away
7. 1.643 km S of Adak, AlaskaThu, Apr 29, 12:47 AM HADT · 1976 days ago · 44 km deep · 73 km away
8. 1.8127 km SW of Adak, AlaskaWed, Apr 28, 11:16 PM HADT · 1976 days ago · 40 km deep · 83 km away
9. 2.264 km SSE of Adak, AlaskaWed, Apr 28, 6:37 PM HADT · 1977 days ago · 23 km deep · 91 km away
10. 2.6102 km WSW of Adak, AlaskaWed, Apr 28, 5:44 PM HADT · 1977 days ago · 61 km deep · 54 km away
11. 1.746 km W of Adak, AlaskaWed, Apr 28, 5:20 AM HADT · 1977 days ago · 80 km deep · 13 km away
12. 1.6114 km WSW of Adak, AlaskaWed, Apr 28, 5:14 AM HADT · 1977 days ago · 19 km deep · 65 km away
13. 1.691 km SW of Adak, AlaskaWed, Apr 28, 3:40 AM HADT · 1977 days ago · 18 km deep · 51 km away
14. 2.041 km SSE of Adak, AlaskaTue, Apr 27, 6:56 PM HADT · 1978 days ago · 36 km deep · 81 km away
15. 1.849 km S of Adak, AlaskaTue, Apr 27, 6:30 PM HADT · 1978 days ago · 25 km deep · 78 km away
16. 2.2145 km W of Adak, AlaskaTue, Apr 27, 2:35 PM HADT · 1978 days ago · 165 km deep · 89 km away
17. 1.5125 km WSW of Adak, AlaskaTue, Apr 27, 1:06 PM HADT · 1978 days ago · 13 km deep · 71 km away
18. 2.8104 km WSW of Adak, AlaskaTue, Apr 27, 12:07 PM HADT · 1978 days ago · 30 km deep · 49 km away
19. 1.9127 km SW of Adak, AlaskaMon, Apr 26, 9:13 PM HADT · 1978 days ago · 40 km deep · 85 km away
20. 2.057 km SSE of Adak, AlaskaSun, Apr 25, 1:24 AM HADT · 1980 days ago · 27 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91235051. Read Sat, Sep 26, 2026, 3:39 PM UTC.