M1.7 earthquake 261 km W of Adak, Alaska

Magnitude

1.7 (ml), micro

Local time

Sun, Aug 8, 2021, 11:13 AM GMT+12

UTC

2021-08-07 23:13:33 UTC

Depth

13.6 km (8.5 mi), shallow

Epicenter

51.887° N, 179.573° E

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.9 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.32

Depth from

From location

Station coverage gap

254°, poorly surrounded by stations

Stations used

6

After

1. 1.9Andreanof Islands, Aleutian Islands, AlaskaSat, Aug 7, 6:29 PM HADT · 1873 days ago · 13 km deep · 71 km away
2. 2.0Rat Islands, Aleutian Islands, AlaskaSun, Aug 8, 8:52 PM GMT+12 · 1873 days ago · 97 km deep · 67 km away
3. 1.5Rat Islands, Aleutian Islands, AlaskaMon, Aug 9, 8:40 PM GMT+12 · 1872 days ago · 23 km deep · 64 km away
4. 1.7227 km WSW of Adak, AlaskaMon, Aug 9, 3:03 AM HADT · 1872 days ago · 50 km deep · 69 km away
5. 4.0204 km W of Adak, AlaskaMon, Aug 9, 4:39 AM HADT · 1872 days ago · 169 km deep · 59 km away
6. 1.5234 km WSW of Adak, AlaskaMon, Aug 9, 3:31 PM HADT · 1872 days ago · 53 km deep · 55 km away
7. 3.0270 km WSW of Adak, AlaskaTue, Aug 10, 1:32 PM GMT+12 · 1871 days ago · 51 km deep · 62 km away
8. 2.9294 km WSW of Adak, AlaskaWed, Aug 11, 2:17 PM GMT+12 · 1870 days ago · 59 km deep · 58 km away
9. 1.7184 km W of Adak, AlaskaTue, Aug 10, 6:35 PM HADT · 1870 days ago · 139 km deep · 77 km away
10. 1.9245 km W of Adak, AlaskaWed, Aug 11, 5:42 PM GMT+12 · 1870 days ago · 168 km deep · 27 km away
11. 2.0230 km W of Adak, AlaskaTue, Aug 10, 10:42 PM HADT · 1870 days ago · 186 km deep · 48 km away
12. 1.6206 km WSW of Adak, AlaskaWed, Aug 11, 5:16 AM HADT · 1870 days ago · 47 km deep · 87 km away
13. 2.0Rat Islands, Aleutian Islands, AlaskaThu, Aug 12, 4:34 AM GMT+12 · 1870 days ago · 142 km deep · 78 km away
14. 1.7Rat Islands, Aleutian Islands, AlaskaThu, Aug 12, 10:02 AM GMT+12 · 1870 days ago · 18 km deep · 86 km away
15. 1.6243 km WSW of Adak, AlaskaThu, Aug 12, 12:22 PM GMT+12 · 1870 days ago · 17 km deep · 68 km away
16. 3.3233 km WSW of Adak, AlaskaWed, Aug 11, 5:23 PM HADT · 1869 days ago · 65 km deep · 57 km away
17. 1.5213 km W of Adak, AlaskaWed, Aug 11, 9:01 PM HADT · 1869 days ago · 73 km deep · 58 km away
18. 1.5265 km W of Adak, AlaskaFri, Aug 13, 1:40 AM GMT+12 · 1869 days ago · 20 km deep · 5 km away
19. 2.0245 km WSW of Adak, AlaskaThu, Aug 12, 7:46 AM GMT-12 · 1869 days ago · 13 km deep · 94 km away
20. 1.6Rat Islands, Aleutian Islands, AlaskaSun, Aug 15, 8:17 AM GMT+12 · 1867 days ago · 39 km deep · 81 km away
21. 2.7Rat Islands, Aleutian Islands, AlaskaSun, Aug 15, 11:33 AM GMT+12 · 1867 days ago · 124 km deep · 80 km away
22. 1.8216 km W of Adak, AlaskaSun, Aug 15, 7:39 PM HADT · 1865 days ago · 74 km deep · 55 km away
23. 1.7228 km WSW of Adak, AlaskaSun, Aug 15, 8:44 PM HADT · 1865 days ago · 19 km deep · 80 km away
24. 1.6256 km W of Adak, AlaskaTue, Aug 17, 10:06 PM GMT+12 · 1864 days ago · 15 km deep · 6 km away
25. 1.5267 km W of Adak, AlaskaTue, Aug 17, 10:27 PM GMT+12 · 1864 days ago · 67 km deep · 32 km away
26. 2.1Rat Islands, Aleutian Islands, AlaskaWed, Aug 18, 5:02 AM GMT+12 · 1864 days ago · 138 km deep · 53 km away
27. 3.2216 km WSW of Adak, AlaskaTue, Aug 17, 10:27 AM HADT · 1864 days ago · 35 km deep · 71 km away
28. 2.3169 km W of Adak, AlaskaTue, Aug 17, 6:25 PM HADT · 1863 days ago · 243 km deep · 91 km away
29. 1.8243 km WSW of Adak, AlaskaTue, Aug 17, 8:48 PM GMT-12 · 1863 days ago · 39 km deep · 93 km away
30. 2.6257 km W of Adak, AlaskaWed, Aug 18, 9:10 PM GMT+12 · 1863 days ago · 10 km deep · 5 km away
31. 2.0294 km WSW of Adak, AlaskaThu, Aug 19, 4:43 PM GMT+12 · 1862 days ago · 23 km deep · 82 km away
32. 3.5Rat Islands, Aleutian Islands, AlaskaFri, Aug 20, 4:54 AM GMT+12 · 1862 days ago · 57 km deep · 69 km away
33. 1.6219 km W of Adak, AlaskaThu, Aug 19, 8:30 AM HADT · 1862 days ago · 92 km deep · 44 km away
34. 1.6197 km WSW of Adak, AlaskaThu, Aug 19, 9:53 AM HADT · 1862 days ago · 75 km deep · 81 km away
35. 1.5Rat Islands, Aleutian Islands, AlaskaFri, Aug 20, 3:44 PM GMT+12 · 1861 days ago · 65 km deep · 87 km away
36. 3.6262 km W of Adak, AlaskaFri, Aug 20, 6:10 PM GMT+12 · 1861 days ago · 80 km deep · 27 km away
37. 1.7296 km WSW of Adak, AlaskaSat, Aug 21, 2:22 AM GMT+12 · 1861 days ago · 42 km deep · 75 km away
38. 2.9256 km WSW of Adak, AlaskaSat, Aug 21, 9:32 AM GMT+12 · 1861 days ago · 25 km deep · 72 km away
39. 3.8272 km WSW of Adak, AlaskaSat, Aug 21, 10:17 AM GMT+12 · 1861 days ago · 26 km deep · 79 km away
40. 1.6Rat Islands, Aleutian Islands, AlaskaMon, Aug 23, 10:41 AM GMT+12 · 1859 days ago · 89 km deep · 57 km away
41. 1.9203 km W of Adak, AlaskaSun, Aug 22, 3:39 PM HADT · 1858 days ago · 119 km deep · 57 km away
42. 1.8Rat Islands, Aleutian Islands, AlaskaMon, Aug 23, 4:24 PM GMT+12 · 1858 days ago · 86 km deep · 59 km away
43. 1.6247 km WSW of Adak, AlaskaTue, Aug 24, 9:11 AM GMT+12 · 1858 days ago · 63 km deep · 48 km away
44. 1.7252 km W of Adak, AlaskaTue, Aug 24, 1:01 PM GMT+12 · 1857 days ago · 145 km deep · 20 km away
45. 2.0Rat Islands, Aleutian Islands, AlaskaTue, Aug 24, 4:10 PM GMT+12 · 1857 days ago · 137 km deep · 98 km away
46. 1.8263 km W of Adak, AlaskaTue, Aug 24, 10:57 PM GMT+12 · 1857 days ago · 169 km deep · 25 km away
47. 2.5Rat Islands, Aleutian Islands, AlaskaWed, Aug 25, 3:47 AM GMT+12 · 1857 days ago · 94 km deep · 91 km away
48. 1.7Rat Islands, Aleutian Islands, AlaskaWed, Aug 25, 5:30 AM GMT+12 · 1857 days ago · 51 km deep · 62 km away
49. 1.9201 km WSW of Adak, AlaskaTue, Aug 24, 12:02 PM HADT · 1857 days ago · 70 km deep · 79 km away
50. 1.7266 km WSW of Adak, AlaskaWed, Aug 25, 4:50 PM GMT+12 · 1856 days ago · 19 km deep · 79 km away
51. 4.8Rat Islands, Aleutian Islands, AlaskaWed, Aug 25, 10:15 PM GMT+12 · 1856 days ago · 126 km deep · 92 km away
52. 1.6294 km WSW of Adak, AlaskaThu, Aug 26, 8:28 PM GMT+12 · 1855 days ago · 37 km deep · 73 km away
53. 3.1248 km W of Adak, AlaskaFri, Aug 27, 7:07 AM GMT+12 · 1855 days ago · 77 km deep · 35 km away
54. 2.6Rat Islands, Aleutian Islands, AlaskaFri, Aug 27, 11:15 PM GMT+12 · 1854 days ago · 108 km deep · 77 km away
55. 3.0254 km WNW of Adak, AlaskaSat, Aug 28, 2:30 AM GMT+12 · 1854 days ago · 188 km deep · 56 km away
56. 1.5171 km W of Adak, AlaskaFri, Aug 27, 1:13 PM HADT · 1854 days ago · 5 km deep · 93 km away
57. 1.5254 km WSW of Adak, AlaskaSat, Aug 28, 11:38 PM GMT+12 · 1853 days ago · 16 km deep · 59 km away
58. 1.8211 km W of Adak, AlaskaSat, Aug 28, 6:19 PM HADT · 1852 days ago · 92 km deep · 54 km away
59. 1.9230 km W of Adak, AlaskaSat, Aug 28, 8:03 PM HADT · 1852 days ago · 93 km deep · 34 km away
60. 2.6Rat Islands, Aleutian Islands, AlaskaMon, Aug 30, 3:31 AM GMT+12 · 1852 days ago · 138 km deep · 85 km away

The first 60 of 115.

Before

1. 2.0204 km WSW of Adak, AlaskaSat, Aug 7, 10:29 AM HADT · 1874 days ago · 70 km deep · 74 km away
2. 2.9Rat Islands, Aleutian Islands, AlaskaSat, Aug 7, 12:24 PM GMT+12 · 1875 days ago · 125 km deep · 84 km away
3. 1.9Rat Islands, Aleutian Islands, AlaskaFri, Aug 6, 6:00 PM GMT+12 · 1875 days ago · 60 km deep · 88 km away
4. 1.5236 km WSW of Adak, AlaskaThu, Aug 5, 10:02 AM HADT · 1876 days ago · 13 km deep · 88 km away
5. 1.9Rat Islands, Aleutian Islands, AlaskaThu, Aug 5, 5:18 PM GMT+12 · 1876 days ago · 60 km deep · 65 km away
6. 2.1Rat Islands, Aleutian Islands, AlaskaThu, Aug 5, 6:12 AM GMT+12 · 1877 days ago · 87 km deep · 66 km away
7. 3.3Rat Islands, Aleutian Islands, AlaskaThu, Aug 5, 1:03 AM GMT+12 · 1877 days ago · 122 km deep · 92 km away
8. 2.2Rat Islands, Aleutian Islands, AlaskaWed, Aug 4, 4:17 PM GMT+12 · 1877 days ago · 62 km deep · 53 km away
9. 1.6291 km W of Adak, AlaskaWed, Aug 4, 10:33 AM GMT+12 · 1878 days ago · 71 km deep · 40 km away
10. 1.7255 km W of Adak, AlaskaTue, Aug 3, 7:06 AM GMT+12 · 1879 days ago · 7 km deep · 42 km away
11. 2.7Rat Islands, Aleutian Islands, AlaskaMon, Aug 2, 8:09 AM GMT+12 · 1880 days ago · 92 km deep · 72 km away
12. 1.5Rat Islands, Aleutian Islands, AlaskaSun, Aug 1, 7:05 AM GMT+12 · 1881 days ago · 21 km deep · 92 km away
13. 2.8Rat Islands, Aleutian Islands, AlaskaSun, Aug 1, 3:57 AM GMT+12 · 1881 days ago · 77 km deep · 35 km away
14. 3.7Rat Islands, Aleutian Islands, AlaskaSun, Aug 1, 12:31 AM GMT+12 · 1881 days ago · 116 km deep · 83 km away
15. 1.9245 km WSW of Adak, AlaskaSat, Jul 31, 12:31 PM GMT+12 · 1882 days ago · 13 km deep · 63 km away
16. 2.2268 km WSW of Adak, AlaskaFri, Jul 30, 11:01 PM GMT+12 · 1882 days ago · 36 km deep · 76 km away
17. 1.7Rat Islands, Aleutian Islands, AlaskaFri, Jul 30, 10:40 PM GMT+12 · 1882 days ago · 7 km deep · 84 km away
18. 2.7242 km WSW of Adak, AlaskaFri, Jul 30, 9:44 PM GMT+12 · 1882 days ago · 35 km deep · 72 km away
19. 1.8Rat Islands, Aleutian Islands, AlaskaFri, Jul 30, 7:09 PM GMT+12 · 1882 days ago · 59 km deep · 63 km away
20. 2.8265 km W of Adak, AlaskaFri, Jul 30, 12:56 PM GMT+12 · 1882 days ago · 10 km deep · 31 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91333291. Read Thu, Sep 24, 2026, 12:06 PM UTC.