Alaska earthquakes

M1.9 earthquake 77 km NE of Adak, Alaska

A magnitude 1.9 earthquake struck 77 km NE of Adak, Alaska on Thu, Aug 5, 2021, 3:00 PM HADT (00:00 UTC), 138 km (86 mi) below the surface.

A larger quake followed: M3.0 72 km ESE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-08-06 00:00:48 UTC
Depth
138.4 km (86.0 mi), intermediate-depth
Epicenter
52.441° N, 175.988° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 65 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 3.072 km ESE of Adak, Alaska · 1874 days ago · 62 km deep · 92 km away
  2. 1.867 km WSW of Atka, Alaska · 1873 days ago · 69 km deep · 86 km away
  3. 1.535 km W of Adak, Alaska · 1870 days ago · 93 km deep · 100 km away
  4. 1.741 km ENE of Adak, Alaska · 1868 days ago · 6 km deep · 44 km away
  5. 1.574 km E of Adak, Alaska · 1868 days ago · 22 km deep · 77 km away
  6. 1.620 km SE of Adak, Alaska · 1867 days ago · 71 km deep · 85 km away
  7. 3.183 km E of Adak, Alaska · 1865 days ago · 73 km deep · 82 km away
  8. 1.514 km SSE of Adak, Alaska · 1863 days ago · 80 km deep · 84 km away
  9. 1.573 km WSW of Atka, Alaska · 1862 days ago · 64 km deep · 80 km away
  10. 2.053 km ENE of Adak, Alaska · 1862 days ago · 146 km deep · 43 km away
  11. 1.863 km W of Atka, Alaska · 1861 days ago · 170 km deep · 63 km away
  12. 1.610 km SW of Adak, Alaska · 1859 days ago · 81 km deep · 88 km away
  13. 1.915 km NE of Adak, Alaska · 1859 days ago · 151 km deep · 61 km away
  14. 1.664 km ENE of Adak, Alaska · 1859 days ago · 12 km deep · 43 km away
  15. 3.067 km E of Adak, Alaska · 1858 days ago · 71 km deep · 71 km away
  16. 1.657 km ENE of Adak, Alaska · 1857 days ago · 175 km deep · 36 km away
  17. 1.645 km E of Adak, Alaska · 1857 days ago · 68 km deep · 70 km away
  18. 2.020 km WSW of Adak, Alaska · 1856 days ago · 77 km deep · 93 km away
  19. 2.8Andreanof Islands, Aleutian Islands, Alaska · 1856 days ago · 219 km deep · 87 km away
  20. 1.871 km E of Adak, Alaska · 1855 days ago · 149 km deep · 68 km away
  21. 3.668 km ESE of Adak, Alaska · 1855 days ago · 35 km deep · 99 km away
  22. 1.829 km SSE of Adak, Alaska · 1855 days ago · 45 km deep · 95 km away
  23. 1.773 km WSW of Atka, Alaska · 1854 days ago · 73 km deep · 72 km away
  24. 1.942 km NE of Adak, Alaska · 1852 days ago · 189 km deep · 36 km away
  25. 1.578 km W of Atka, Alaska · 1852 days ago · 110 km deep · 59 km away
  26. 1.772 km WSW of Atka, Alaska · 1851 days ago · 122 km deep · 67 km away
  27. 1.846 km NNW of Adak, Alaska · 1851 days ago · 138 km deep · 73 km away
  28. 1.748 km E of Adak, Alaska · 1851 days ago · 149 km deep · 69 km away
  29. 2.717 km SE of Adak, Alaska · 1850 days ago · 112 km deep · 85 km away
  30. 4.3116 km NW of Atka, Alaska · 1850 days ago · 255 km deep · 56 km away
  31. 3.684 km E of Adak, Alaska · 1850 days ago · 64 km deep · 80 km away
  32. 1.676 km ESE of Adak, Alaska · 1850 days ago · 19 km deep · 84 km away
  33. 3.246 km ENE of Adak, Alaska · 1848 days ago · 137 km deep · 43 km away
  34. 2.958 km E of Adak, Alaska · 1848 days ago · 156 km deep · 53 km away
  35. 1.652 km ENE of Adak, Alaska · 1848 days ago · 148 km deep · 49 km away
  36. 1.512 km SE of Adak, Alaska · 1848 days ago · 153 km deep · 78 km away
  37. 1.710 km SSE of Adak, Alaska · 1847 days ago · 156 km deep · 83 km away
  38. 2.588 km ESE of Adak, Alaska · 1845 days ago · 58 km deep · 92 km away
  39. 1.933 km ESE of Adak, Alaska · 1845 days ago · 61 km deep · 81 km away
  40. 1.951 km ENE of Adak, Alaska · 1845 days ago · 163 km deep · 40 km away
  41. 1.674 km ENE of Adak, Alaska · 1844 days ago · 149 km deep · 49 km away
  42. 1.561 km W of Atka, Alaska · 1844 days ago · 13 km deep · 70 km away
  43. 3.367 km ESE of Adak, Alaska · 1843 days ago · 39 km deep · 100 km away
  44. 1.774 km ENE of Adak, Alaska · 1843 days ago · 137 km deep · 49 km away
  45. 1.960 km ENE of Adak, Alaska · 1843 days ago · 150 km deep · 41 km away
  46. 2.278 km ENE of Adak, Alaska · 1842 days ago · 236 km deep · 47 km away
  47. 1.739 km NE of Adak, Alaska · 1842 days ago · 132 km deep · 40 km away
  48. 1.651 km E of Adak, Alaska · 1841 days ago · 93 km deep · 55 km away
  49. 2.543 km NW of Atka, Alaska · 1832 days ago · 216 km deep · 89 km away
  50. 1.557 km ESE of Adak, Alaska · 1830 days ago · 44 km deep · 87 km away
  51. 1.883 km E of Adak, Alaska · 1830 days ago · 64 km deep · 79 km away
  52. 1.561 km ESE of Adak, Alaska · 1830 days ago · 44 km deep · 84 km away
  53. 2.970 km NE of Adak, Alaska · 1829 days ago · 228 km deep · 7 km away
  54. 2.182 km ENE of Adak, Alaska · 1829 days ago · 90 km deep · 47 km away
  55. 1.945 km NE of Adak, Alaska · 1826 days ago · 135 km deep · 33 km away
  56. 2.032 km E of Adak, Alaska · 1826 days ago · 75 km deep · 65 km away
  57. 1.619 km SSW of Adak, Alaska · 1826 days ago · 75 km deep · 96 km away
  58. 1.876 km ESE of Adak, Alaska · 1824 days ago · 20 km deep · 100 km away
  59. 1.653 km SE of Adak, Alaska · 1822 days ago · 32 km deep · 99 km away
  60. 3.837 km ENE of Adak, Alaska · 1819 days ago · 128 km deep · 53 km away

The first 60 of 65.

Before

  1. 1.520 km SSW of Adak, Alaska · 1877 days ago · 74 km deep · 98 km away
  2. 3.517 km SE of Adak, Alaska · 1879 days ago · 69 km deep · 79 km away
  3. 3.054 km ESE of Adak, Alaska · 1881 days ago · 42 km deep · 87 km away
  4. 2.066 km NE of Adak, Alaska · 1881 days ago · 217 km deep · 12 km away
  5. 2.989 km NNE of Adak, Alaska · 1882 days ago · 212 km deep · 15 km away
  6. 1.685 km WSW of Atka, Alaska · 1882 days ago · 78 km deep · 66 km away
  7. 1.954 km ENE of Adak, Alaska · 1882 days ago · 211 km deep · 39 km away
  8. 3.074 km NW of Atka, Alaska · 1882 days ago · 206 km deep · 76 km away
  9. 1.519 km WNW of Adak, Alaska · 1882 days ago · 86 km deep · 83 km away
  10. 2.055 km ENE of Adak, Alaska · 1882 days ago · 179 km deep · 48 km away
  11. 3.172 km ENE of Adak, Alaska · 1882 days ago · 98 km deep · 45 km away
  12. 1.682 km ENE of Adak, Alaska · 1883 days ago · 13 km deep · 52 km away
  13. 1.837 km ENE of Adak, Alaska · 1883 days ago · 147 km deep · 47 km away
  14. 3.344 km NNE of Adak, Alaska · 1884 days ago · 211 km deep · 40 km away
  15. 1.715 km E of Adak, AK · 1884 days ago · 76 km deep · 72 km away
  16. 1.776 km ENE of Adak, Alaska · 1885 days ago · 179 km deep · 46 km away
  17. 1.650 km ENE of Adak, Alaska · 1885 days ago · 148 km deep · 38 km away
  18. 3.079 km ENE of Adak, Alaska · 1885 days ago · 191 km deep · 30 km away
  19. 1.978 km ENE of Adak, Alaska · 1886 days ago · 166 km deep · 34 km away
  20. 2.856 km E of Adak, Alaska · 1887 days ago · 67 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021a0j5rdj. Read Thu, Sep 24, 2026, 5:45 AM UTC.