M1.6 earthquake 145 km W of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Tue, Jun 22, 2021, 7:49 PM HADT

UTC

2021-06-23 04:49:25 UTC

Depth

7.3 km (4.5 mi), shallow

Epicenter

51.865° N, 178.749° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.5 km horizontally, 1.6 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

323°, poorly surrounded by stations

Stations used

4

After

1. 1.898 km SW of Adak, AlaskaTue, Jun 22, 9:40 PM HADT · 1919 days ago · 38 km deep · 94 km away
2. 1.5133 km WSW of Adak, AlaskaTue, Jun 22, 10:30 PM HADT · 1919 days ago · 14 km deep · 35 km away
3. 1.888 km W of Adak, AlaskaSun, Jun 27, 3:19 PM HADT · 1915 days ago · 8 km deep · 57 km away
4. 1.8200 km W of Adak, AlaskaSun, Jun 27, 8:12 PM HADT · 1914 days ago · 78 km deep · 56 km away
5. 1.769 km WSW of Adak, AlaskaSun, Jun 27, 9:57 PM HADT · 1914 days ago · 52 km deep · 89 km away
6. 1.8133 km WSW of Adak, AlaskaMon, Jun 28, 4:51 AM HADT · 1914 days ago · 22 km deep · 52 km away
7. 2.9107 km WSW of Adak, AlaskaMon, Jun 28, 5:40 AM HADT · 1914 days ago · 49 km deep · 73 km away
8. 1.6123 km WSW of Adak, AlaskaMon, Jun 28, 9:13 AM HADT · 1914 days ago · 42 km deep · 66 km away
9. 1.8161 km WSW of Adak, AlaskaMon, Jun 28, 11:04 AM HADT · 1914 days ago · 23 km deep · 49 km away
10. 1.7138 km WSW of Adak, AlaskaMon, Jun 28, 11:58 AM HADT · 1914 days ago · 41 km deep · 70 km away
11. 1.7126 km WSW of Adak, AlaskaMon, Jun 28, 2:06 PM HADT · 1914 days ago · 25 km deep · 59 km away
12. 1.8131 km WSW of Adak, AlaskaWed, Jun 30, 6:15 PM HADT · 1911 days ago · 13 km deep · 31 km away
13. 1.9230 km WSW of Adak, AlaskaThu, Jul 1, 12:38 AM HADT · 1911 days ago · 41 km deep · 93 km away
14. 1.972 km SW of Adak, AlaskaThu, Jul 1, 10:46 AM HADT · 1911 days ago · 34 km deep · 96 km away
15. 1.784 km SW of Adak, AlaskaFri, Jul 2, 1:17 PM HADT · 1910 days ago · 26 km deep · 91 km away
16. 1.5134 km SW of Adak, AlaskaFri, Jul 2, 5:14 PM HADT · 1909 days ago · 26 km deep · 84 km away
17. 1.658 km W of Adak, AlaskaFri, Jul 2, 10:25 PM HADT · 1909 days ago · 115 km deep · 87 km away
18. 1.7152 km WSW of Adak, AlaskaSat, Jul 3, 9:31 AM HADT · 1909 days ago · 25 km deep · 78 km away
19. 2.4104 km WNW of Adak, AlaskaSat, Jul 3, 1:22 PM HADT · 1909 days ago · 247 km deep · 58 km away
20. 1.6194 km WSW of Adak, AlaskaSat, Jul 3, 9:59 PM HADT · 1908 days ago · 22 km deep · 66 km away
21. 1.5237 km W of Adak, AlaskaSun, Jul 4, 10:43 PM GMT+12 · 1908 days ago · 9 km deep · 95 km away
22. 1.7131 km W of Adak, AlaskaSun, Jul 4, 2:43 AM HADT · 1908 days ago · 8 km deep · 24 km away
23. 3.9117 km SW of Adak, AlaskaSun, Jul 4, 10:05 AM HADT · 1908 days ago · 42 km deep · 86 km away
24. 3.7135 km SW of Adak, AlaskaSun, Jul 4, 5:14 PM HADT · 1907 days ago · 27 km deep · 81 km away
25. 1.6130 km WSW of Adak, AlaskaSun, Jul 4, 8:10 PM HADT · 1907 days ago · 17 km deep · 35 km away
26. 1.667 km W of Adak, AlaskaSun, Jul 4, 9:32 PM HADT · 1907 days ago · 13 km deep · 78 km away
27. 1.9Andreanof Islands, Aleutian Islands, AlaskaSun, Jul 4, 9:48 PM HADT · 1907 days ago · 26 km deep · 94 km away
28. 2.0194 km WSW of Adak, AlaskaMon, Jul 5, 7:42 AM HADT · 1907 days ago · 16 km deep · 85 km away
29. 2.1196 km WSW of Adak, AlaskaMon, Jul 5, 12:30 PM HADT · 1907 days ago · 15 km deep · 91 km away
30. 2.9203 km WSW of Adak, AlaskaMon, Jul 5, 12:31 PM HADT · 1907 days ago · 17 km deep · 98 km away
31. 2.0197 km WSW of Adak, AlaskaMon, Jul 5, 12:35 PM HADT · 1907 days ago · 18 km deep · 94 km away
32. 1.9100 km WSW of Adak, AlaskaMon, Jul 5, 1:07 PM HADT · 1907 days ago · 62 km deep · 68 km away
33. 1.864 km WSW of Adak, AlaskaMon, Jul 5, 1:30 PM HADT · 1907 days ago · 10 km deep · 84 km away
34. 2.7237 km W of Adak, AlaskaWed, Jul 7, 5:50 AM HADT · 1905 days ago · 13 km deep · 92 km away
35. 1.9Andreanof Islands, Aleutian Islands, AlaskaWed, Jul 7, 6:22 PM HADT · 1904 days ago · 22 km deep · 63 km away
36. 1.8158 km WSW of Adak, AlaskaThu, Jul 8, 2:14 AM HADT · 1904 days ago · 5 km deep · 62 km away
37. 1.7130 km WSW of Adak, AlaskaThu, Jul 8, 9:22 AM HADT · 1904 days ago · 7 km deep · 31 km away
38. 1.9151 km WSW of Adak, AlaskaThu, Jul 8, 3:14 PM HADT · 1904 days ago · 8 km deep · 48 km away
39. 1.592 km WSW of Adak, AlaskaThu, Jul 8, 5:50 PM HADT · 1903 days ago · 39 km deep · 79 km away
40. 1.9167 km WSW of Adak, AlaskaFri, Jul 9, 3:57 AM HADT · 1903 days ago · 14 km deep · 54 km away
41. 2.0186 km WSW of Adak, AlaskaFri, Jul 9, 7:13 AM HADT · 1903 days ago · 13 km deep · 69 km away
42. 1.7144 km SW of Adak, AlaskaFri, Jul 9, 9:14 PM HADT · 1902 days ago · 26 km deep · 83 km away
43. 1.5103 km W of Adak, AlaskaSat, Jul 10, 6:04 AM HADT · 1902 days ago · 5 km deep · 42 km away
44. 1.9123 km WSW of Adak, AlaskaSat, Jul 10, 8:17 PM HADT · 1901 days ago · 10 km deep · 40 km away
45. 1.7197 km WSW of Adak, AlaskaSun, Jul 11, 3:01 AM HADT · 1901 days ago · 22 km deep · 90 km away
46. 2.2156 km WSW of Adak, AlaskaSun, Jul 11, 3:13 AM HADT · 1901 days ago · 25 km deep · 79 km away
47. 1.6155 km WSW of Adak, AlaskaSun, Jul 11, 9:43 PM HADT · 1900 days ago · 24 km deep · 77 km away
48. 2.595 km WSW of Adak, AlaskaMon, Jul 12, 9:07 PM HADT · 1899 days ago · 73 km deep · 62 km away
49. 1.7129 km WSW of Adak, AlaskaMon, Jul 12, 9:13 PM HADT · 1899 days ago · 5 km deep · 32 km away
50. 1.6175 km W of Adak, AlaskaTue, Jul 13, 6:19 AM HADT · 1899 days ago · 84 km deep · 34 km away
51. 1.5132 km W of Adak, AlaskaTue, Jul 13, 6:34 AM HADT · 1899 days ago · 110 km deep · 13 km away
52. 2.7135 km SW of Adak, AlaskaTue, Jul 13, 7:15 AM HADT · 1899 days ago · 26 km deep · 96 km away
53. 1.7222 km WSW of Adak, AlaskaTue, Jul 13, 8:13 AM HADT · 1899 days ago · 58 km deep · 85 km away
54. 2.678 km WSW of Adak, AlaskaWed, Jul 14, 3:52 AM HADT · 1898 days ago · 71 km deep · 76 km away
55. 1.7112 km WSW of Adak, AlaskaWed, Jul 14, 8:11 AM HADT · 1898 days ago · 30 km deep · 63 km away
56. 1.5213 km W of Adak, AlaskaThu, Jul 15, 1:06 AM HADT · 1897 days ago · 110 km deep · 68 km away
57. 1.7159 km WSW of Adak, AlaskaThu, Jul 15, 2:02 AM HADT · 1897 days ago · 20 km deep · 82 km away
58. 1.5151 km W of Adak, AlaskaFri, Jul 16, 3:26 PM HADT · 1896 days ago · 12 km deep · 23 km away
59. 1.5118 km WSW of Adak, AlaskaFri, Jul 16, 4:44 PM HADT · 1895 days ago · 32 km deep · 64 km away
60. 2.7108 km WSW of Adak, AlaskaFri, Jul 16, 6:08 PM HADT · 1895 days ago · 26 km deep · 66 km away

The first 60 of 162.

Before

1. 1.8137 km WSW of Adak, AlaskaSat, Jun 19, 3:43 PM HADT · 1923 days ago · 16 km deep · 31 km away
2. 1.8158 km WSW of Adak, AlaskaSat, Jun 19, 4:34 AM HADT · 1923 days ago · 12 km deep · 36 km away
3. 2.776 km W of Adak, AlaskaFri, Jun 18, 2:45 PM HADT · 1924 days ago · 110 km deep · 72 km away
4. 1.8130 km WSW of Adak, AlaskaFri, Jun 18, 9:39 AM HADT · 1924 days ago · 45 km deep · 70 km away
5. 2.0Andreanof Islands, Aleutian Islands, AlaskaFri, Jun 18, 6:10 AM HADT · 1924 days ago · 90 km deep · 80 km away
6. 1.5111 km WSW of Adak, AlaskaFri, Jun 18, 4:54 AM HADT · 1924 days ago · 12 km deep · 53 km away
7. 2.6157 km WSW of Adak, AlaskaFri, Jun 18, 2:04 AM HADT · 1924 days ago · 28 km deep · 57 km away
8. 1.6154 km WSW of Adak, AlaskaWed, Jun 16, 2:27 PM HADT · 1926 days ago · 8 km deep · 54 km away
9. 2.6156 km WSW of Adak, AlaskaTue, Jun 15, 6:28 AM HADT · 1927 days ago · 10 km deep · 72 km away
10. 1.6157 km WSW of Adak, AlaskaSat, Jun 12, 8:17 PM HADT · 1929 days ago · 20 km deep · 65 km away
11. 2.6144 km WSW of Adak, AlaskaFri, Jun 11, 9:19 PM HADT · 1930 days ago · 9 km deep · 50 km away
12. 3.0150 km WSW of Adak, AlaskaFri, Jun 11, 9:19 PM HADT · 1930 days ago · 18 km deep · 59 km away
13. 1.7133 km WSW of Adak, AlaskaFri, Jun 11, 12:04 PM HADT · 1931 days ago · 9 km deep · 29 km away
14. 2.158 km W of Adak, AlaskaThu, Jun 10, 9:48 PM HADT · 1931 days ago · 88 km deep · 87 km away
15. 2.754 km WSW of Adak, AlaskaThu, Jun 10, 9:48 PM HADT · 1931 days ago · 96 km deep · 93 km away
16. 1.5169 km W of Adak, AlaskaTue, Jun 8, 8:34 AM HADT · 1934 days ago · 9 km deep · 27 km away
17. 3.8170 km WNW of Adak, AlaskaMon, Jun 7, 7:25 AM HADT · 1935 days ago · 206 km deep · 64 km away
18. 1.6127 km WSW of Adak, AlaskaSun, Jun 6, 11:37 AM HADT · 1936 days ago · 7 km deep · 40 km away
19. 1.8158 km WSW of Adak, AlaskaSun, Jun 6, 2:12 AM HADT · 1936 days ago · 18 km deep · 53 km away
20. 3.482 km SW of Adak, AlaskaMon, May 31, 2:54 PM HADT · 1942 days ago · 45 km deep · 95 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91288436. Read Thu, Sep 24, 2026, 12:52 PM UTC.