M3.8 earthquake 79 km SE of Atka, Alaska

Magnitude

3.8 (mb), minor

Local time

Sat, May 22, 2021, 2:36 AM HADT

UTC

2021-05-22 11:36:15 UTC

Depth

44.9 km (27.9 mi), shallow

Epicenter

51.680° N, 173.407° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 11.9 km horizontally, 10.9 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

166°

Stations used

22

After

1. 3.6123 km SSE of Atka, AlaskaSat, May 22, 3:08 AM HADT · 1951 days ago · 39 km deep · 48 km away
2. 4.198 km SE of Atka, AlaskaSat, May 22, 3:51 AM HADT · 1951 days ago · 45 km deep · 21 km away
3. 4.099 km SE of Atka, AlaskaSat, May 22, 4:57 AM HADT · 1951 days ago · 35 km deep · 21 km away
4. 4.245 km E of Atka, AlaskaSun, May 30, 9:07 AM HADT · 1943 days ago · 148 km deep · 59 km away
5. 2.042 km SW of Atka, AlaskaMon, May 31, 6:08 AM HADT · 1942 days ago · 55 km deep · 88 km away
6. 2.4118 km SSE of Atka, AlaskaMon, May 31, 7:00 AM HADT · 1942 days ago · 37 km deep · 66 km away
7. 3.3107 km SSE of Atka, AlaskaThu, Jun 3, 2:34 AM HADT · 1939 days ago · 33 km deep · 33 km away
8. 2.0141 km SE of Atka, AlaskaThu, Jun 3, 9:11 AM HADT · 1938 days ago · 24 km deep · 63 km away
9. 2.5159 km SSE of Atka, AlaskaSun, Jun 6, 12:52 PM HADT · 1935 days ago · 10 km deep · 84 km away
10. 3.2Andreanof Islands, Aleutian Islands, AlaskaWed, Jun 9, 7:41 PM HADT · 1932 days ago · 35 km deep · 68 km away
11. 2.9Andreanof Islands, Aleutian Islands, AlaskaThu, Jun 10, 6:02 PM HADT · 1931 days ago · 35 km deep · 24 km away
12. 2.7Andreanof Islands, Aleutian Islands, AlaskaSat, Jun 12, 12:13 AM HADT · 1930 days ago · 35 km deep · 19 km away
13. 4.189 km SSE of Atka, AlaskaSat, Jun 12, 1:40 AM HADT · 1930 days ago · 30 km deep · 21 km away
14. 2.915 km NNE of Atka, AlaskaSat, Jun 12, 5:17 AM HADT · 1930 days ago · 178 km deep · 88 km away
15. 2.994 km SE of Atka, AlaskaTue, Jun 22, 6:13 PM HADT · 1919 days ago · 11 km deep · 20 km away
16. 2.4135 km SSE of Atka, AlaskaSun, Jun 27, 6:55 PM HADT · 1914 days ago · 32 km deep · 80 km away
17. 4.066 km ESE of Atka, AKSun, Jun 27, 11:57 PM HADT · 1914 days ago · 63 km deep · 39 km away
18. 2.2146 km S of Atka, AlaskaTue, Jun 29, 10:05 AM HADT · 1912 days ago · 34 km deep · 96 km away
19. 4.6125 km ESE of Atka, AlaskaTue, Jun 29, 5:57 PM HADT · 1912 days ago · 21 km deep · 73 km away
20. 2.330 km SW of Atka, AlaskaWed, Jun 30, 1:26 PM HADT · 1911 days ago · 76 km deep · 86 km away
21. 2.69 km S of Atka, AlaskaThu, Jul 1, 5:46 PM HADT · 1910 days ago · 101 km deep · 72 km away
22. 2.110 km E of Atka, AlaskaFri, Jul 2, 2:53 AM HADT · 1910 days ago · 166 km deep · 73 km away
23. 3.270 km SE of Atka, AlaskaSun, Jul 4, 5:01 PM HADT · 1907 days ago · 35 km deep · 15 km away
24. 1.856 km SSW of Atka, AlaskaMon, Jul 5, 5:15 PM HADT · 1906 days ago · 43 km deep · 69 km away
25. 2.572 km ENE of Atka, AlaskaTue, Jul 6, 5:48 AM HADT · 1906 days ago · 107 km deep · 79 km away
26. 2.589 km ESE of Atka, AlaskaWed, Jul 7, 5:29 AM HADT · 1905 days ago · 63 km deep · 51 km away
27. 2.618 km NW of Atka, AlaskaWed, Jul 7, 9:55 PM HADT · 1904 days ago · 184 km deep · 97 km away
28. 2.274 km SSW of Atka, AlaskaFri, Jul 9, 4:59 AM HADT · 1903 days ago · 37 km deep · 86 km away
29. 1.89 km SSW of Atka, AlaskaFri, Jul 9, 11:00 PM HADT · 1902 days ago · 24 km deep · 77 km away
30. 1.5Andreanof Islands, Aleutian Islands, AlaskaSat, Jul 10, 5:10 AM HADT · 1902 days ago · 25 km deep · 81 km away
31. 1.878 km SSW of Atka, AlaskaSat, Jul 10, 5:45 AM HADT · 1902 days ago · 14 km deep · 90 km away
32. 2.498 km SSW of Atka, AlaskaSat, Jul 10, 10:25 AM HADT · 1901 days ago · 28 km deep · 90 km away
33. 2.297 km SSW of Atka, AlaskaSat, Jul 10, 11:41 AM HADT · 1901 days ago · 25 km deep · 89 km away
34. 1.836 km SSE of Atka, AlaskaSun, Jul 11, 9:38 PM HADT · 1900 days ago · 122 km deep · 50 km away
35. 1.650 km SE of Atka, AlaskaMon, Jul 12, 12:01 AM HADT · 1900 days ago · 75 km deep · 31 km away
36. 1.883 km SSE of Atka, AlaskaMon, Jul 12, 3:21 AM HADT · 1900 days ago · 28 km deep · 24 km away
37. 1.9107 km S of Atka, AlaskaMon, Jul 12, 4:54 AM HADT · 1900 days ago · 29 km deep · 82 km away
38. 2.519 km SW of Atka, AlaskaMon, Jul 12, 1:04 PM HADT · 1899 days ago · 186 km deep · 80 km away
39. 2.766 km ENE of Atka, AlaskaMon, Jul 12, 7:43 PM HADT · 1899 days ago · 5 km deep · 75 km away
40. 1.842 km ESE of Atka, AlaskaTue, Jul 13, 8:48 AM HADT · 1899 days ago · 66 km deep · 44 km away
41. 2.130 km SSE of Atka, AlaskaTue, Jul 13, 10:17 AM HADT · 1898 days ago · 2 km deep · 51 km away
42. 1.531 km SSW of Atka, AlaskaTue, Jul 13, 3:00 PM HADT · 1898 days ago · 70 km deep · 71 km away
43. 1.686 km SE of Atka, AlaskaWed, Jul 14, 10:14 AM HADT · 1897 days ago · 23 km deep · 8 km away
44. 2.429 km E of Atka, AlaskaWed, Jul 14, 3:26 PM HADT · 1897 days ago · 11 km deep · 63 km away
45. 1.590 km SSE of Atka, AlaskaWed, Jul 14, 6:52 PM HADT · 1897 days ago · 19 km deep · 27 km away
46. 1.5106 km S of Atka, AlaskaThu, Jul 15, 2:05 AM HADT · 1897 days ago · 26 km deep · 80 km away
47. 3.131 km E of Atka, AlaskaThu, Jul 15, 1:47 PM HADT · 1896 days ago · 13 km deep · 65 km away
48. 2.336 km E of Atka, AlaskaFri, Jul 16, 6:47 PM HADT · 1895 days ago · 11 km deep · 60 km away
49. 2.432 km E of Atka, AlaskaSat, Jul 17, 7:16 PM HADT · 1894 days ago · 7 km deep · 58 km away
50. 2.663 km ESE of Atka, AlaskaSun, Jul 18, 12:16 AM HADT · 1894 days ago · 50 km deep · 28 km away
51. 2.6113 km ESE of Atka, AlaskaSun, Jul 18, 1:27 AM HADT · 1894 days ago · 66 km deep · 61 km away
52. 2.372 km ESE of Atka, AlaskaMon, Jul 19, 7:53 AM HADT · 1893 days ago · 37 km deep · 25 km away
53. 2.06 km SSE of Atka, AlaskaMon, Jul 19, 5:54 PM HADT · 1892 days ago · 79 km deep · 73 km away
54. 1.818 km W of Atka, AlaskaMon, Jul 19, 11:49 PM HADT · 1892 days ago · 73 km deep · 91 km away
55. 3.275 km E of Atka, AlaskaTue, Jul 20, 12:05 PM HADT · 1891 days ago · 117 km deep · 48 km away

Before

1. 5.175 km SE of Atka, AlaskaSat, May 22, 12:04 AM HADT · 1951 days ago · 21 km deep · 7 km away
2. 4.281 km SE of Atka, AlaskaFri, May 21, 11:56 PM HADT · 1951 days ago · 41 km deep · 6 km away
3. 4.295 km SE of Atka, AlaskaFri, May 21, 8:50 PM HADT · 1951 days ago · 16 km deep · 17 km away
4. 3.955 km SSE of Atka, AlaskaFri, May 21, 3:14 PM HADT · 1951 days ago · 35 km deep · 34 km away
5. 2.1140 km SSE of Atka, AlaskaTue, May 18, 1:26 AM HADT · 1955 days ago · 38 km deep · 74 km away
6. 2.955 km SW of Atka, AlaskaThu, May 13, 9:20 PM HADT · 1959 days ago · 51 km deep · 93 km away
7. 2.684 km SSE of Atka, AlaskaThu, May 13, 8:56 AM HADT · 1960 days ago · 35 km deep · 19 km away
8. 3.345 km SSE of Atka, AlaskaSat, May 1, 10:59 PM HADT · 1971 days ago · 56 km deep · 36 km away
9. 3.7126 km SSE of Atka, AlaskaSat, May 1, 6:44 AM HADT · 1972 days ago · 38 km deep · 57 km away
10. 2.363 km S of Atka, AlaskaThu, Apr 29, 4:29 AM HADT · 1974 days ago · 21 km deep · 54 km away
11. 2.194 km SE of Atka, AlaskaThu, Apr 29, 1:06 AM HADT · 1974 days ago · 18 km deep · 15 km away
12. 1.943 km SSW of Atka, AlaskaTue, Apr 27, 3:59 AM HADT · 1976 days ago · 44 km deep · 68 km away
13. 1.5Andreanof Islands, Aleutian Islands, AlaskaMon, Apr 26, 4:50 PM HADT · 1976 days ago · 6 km deep · 85 km away
14. 2.968 km E of Atka, AlaskaSat, Apr 24, 8:38 PM HADT · 1978 days ago · 223 km deep · 71 km away
15. 1.978 km SE of Atka, AlaskaSat, Apr 24, 5:05 PM HADT · 1978 days ago · 12 km deep · 5 km away
16. 3.168 km SE of Atka, AlaskaFri, Apr 23, 12:42 AM HADT · 1980 days ago · 35 km deep · 17 km away
17. 2.120 km ESE of Atka, AlaskaThu, Apr 22, 11:53 PM HADT · 1980 days ago · 146 km deep · 61 km away
18. 2.154 km E of Atka, AlaskaThu, Apr 22, 11:15 PM HADT · 1980 days ago · 88 km deep · 53 km away
19. 2.237 km ESE of Atka, AlaskaThu, Apr 22, 9:25 PM HADT · 1980 days ago · 153 km deep · 50 km away

From the USGS Earthquake Hazards Program and its partner networks, event us6000ef6t. Read Thu, Sep 24, 2026, 5:40 AM UTC.