Alaska earthquakes

M1.9 earthquake 75 km E of Adak, Alaska

A magnitude 1.9 earthquake struck 75 km E of Adak, Alaska on Tue, Oct 5, 2021, 3:27 AM HADT (12:27 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M3.6 33 km SSW of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-10-05 12:27:06 UTC
Depth
29.2 km (18.1 mi), shallow
Epicenter
51.812° N, 175.542° 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
22

Nearby

Within 100 km, magnitude 1.5 and up: 135 in the 60 days after this one and 59 in the 30 days before it.

After

  1. 3.633 km SSW of Atka, Alaska · 1814 days ago · 75 km deep · 86 km away
  2. 3.340 km SE of Adak, Alaska · 1812 days ago · 35 km deep · 52 km away
  3. 1.966 km E of Adak, Alaska · 1811 days ago · 62 km deep · 11 km away
  4. 3.884 km NE of Adak, Alaska · 1810 days ago · 182 km deep · 67 km away
  5. 3.863 km WSW of Atka, Alaska · 1810 days ago · 81 km deep · 39 km away
  6. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1810 days ago · 23 km deep · 58 km away
  7. 2.995 km S of Atka, Alaska · 1810 days ago · 17 km deep · 99 km away
  8. 3.127 km SW of Atka, Alaska · 1810 days ago · 35 km deep · 77 km away
  9. 2.165 km E of Adak, Alaska · 1809 days ago · 29 km deep · 10 km away
  10. 4.981 km S of Atka, Alaska · 1809 days ago · 35 km deep · 85 km away
  11. 3.746 km S of Adak, Alaska · 1808 days ago · 35 km deep · 86 km away
  12. 2.855 km S of Adak, Alaska · 1807 days ago · 32 km deep · 96 km away
  13. 3.144 km SSE of Adak, Alaska · 1806 days ago · 33 km deep · 60 km away
  14. 3.134 km WSW of Atka, Alaska · 1806 days ago · 138 km deep · 67 km away
  15. 1.646 km S of Adak, Alaska · 1805 days ago · 30 km deep · 78 km away
  16. 1.890 km ESE of Adak, Alaska · 1805 days ago · 54 km deep · 21 km away
  17. 1.959 km WNW of Atka, Alaska · 1805 days ago · 108 km deep · 79 km away
  18. 1.822 km SW of Atka, Alaska · 1805 days ago · 72 km deep · 79 km away
  19. 2.560 km SE of Adak, Alaska · 1805 days ago · 36 km deep · 60 km away
  20. 2.885 km ESE of Adak, Alaska · 1804 days ago · 52 km deep · 15 km away
  21. 3.050 km ESE of Adak, Alaska · 1800 days ago · 3 km deep · 29 km away · felt by 1
  22. 3.693 km ESE of Adak, Alaska · 1800 days ago · 24 km deep · 23 km away
  23. 2.469 km WNW of Atka, Alaska · 1797 days ago · 120 km deep · 68 km away
  24. 2.081 km ENE of Adak, Alaska · 1796 days ago · 115 km deep · 27 km away
  25. 2.133 km ESE of Adak, Alaska · 1795 days ago · 62 km deep · 47 km away
  26. 3.563 km ESE of Adak, Alaska · 1795 days ago · 35 km deep · 32 km away
  27. 1.889 km SW of Atka, Alaska · 1794 days ago · 26 km deep · 46 km away
  28. 1.658 km SE of Adak, Alaska · 1794 days ago · 25 km deep · 44 km away
  29. 2.929 km SSW of Atka, Alaska · 1794 days ago · 10 km deep · 86 km away
  30. 1.935 km E of Adak, Alaska · 1794 days ago · 125 km deep · 40 km away
  31. 1.833 km SSW of Atka, Alaska · 1794 days ago · 71 km deep · 78 km away
  32. 1.843 km SSE of Adak, Alaska · 1794 days ago · 34 km deep · 63 km away
  33. 2.759 km SSE of Adak, Alaska · 1793 days ago · 34 km deep · 63 km away
  34. 2.974 km W of Atka, Alaska · 1793 days ago · 252 km deep · 38 km away
  35. 1.843 km SSE of Adak, Alaska · 1793 days ago · 37 km deep · 72 km away
  36. 1.740 km SSE of Adak, Alaska · 1793 days ago · 36 km deep · 65 km away
  37. 1.982 km ESE of Adak, Alaska · 1792 days ago · 48 km deep · 24 km away
  38. 3.747 km NE of Adak, Alaska · 1792 days ago · 188 km deep · 52 km away
  39. 2.657 km ESE of Adak, Alaska · 1792 days ago · 68 km deep · 26 km away
  40. 1.985 km ESE of Adak, Alaska · 1792 days ago · 44 km deep · 19 km away
  41. 2.062 km E of Adak, Alaska · 1791 days ago · 74 km deep · 19 km away
  42. 2.073 km SE of Adak, Alaska · 1791 days ago · 23 km deep · 44 km away
  43. 1.881 km ESE of Adak, Alaska · 1791 days ago · 55 km deep · 17 km away
  44. 2.949 km SSW of Adak, Alaska · 1791 days ago · 50 km deep · 96 km away
  45. 2.678 km E of Adak, Alaska · 1791 days ago · 75 km deep · 7 km away
  46. 1.634 km E of Adak, Alaska · 1790 days ago · 9 km deep · 43 km away
  47. 2.345 km S of Atka, Alaska · 1789 days ago · 223 km deep · 88 km away
  48. 1.627 km SW of Atka, Alaska · 1789 days ago · 67 km deep · 78 km away
  49. 1.627 km SW of Atka, Alaska · 1789 days ago · 67 km deep · 78 km away
  50. 1.980 km SSW of Atka, Alaska · 1789 days ago · 29 km deep · 66 km away
  51. 2.7108 km S of Atka, Alaska · 1789 days ago · 28 km deep · 100 km away
  52. 2.790 km SSW of Atka, Alaska · 1789 days ago · 35 km deep · 76 km away
  53. 3.343 km ENE of Adak, Alaska · 1788 days ago · 180 km deep · 46 km away
  54. 2.228 km NNW of Adak, Alaska · 1788 days ago · 110 km deep · 93 km away
  55. 2.483 km S of Atka, Alaska · 1786 days ago · 25 km deep · 90 km away
  56. 2.675 km SSW of Atka, Alaska · 1785 days ago · 35 km deep · 57 km away
  57. 2.060 km ESE of Adak, Alaska · 1784 days ago · 39 km deep · 30 km away
  58. 2.5103 km ESE of Adak, Alaska · 1784 days ago · 35 km deep · 39 km away
  59. 1.872 km SW of Atka, Alaska · 1784 days ago · 17 km deep · 50 km away
  60. 3.153 km SSE of Adak, Alaska · 1784 days ago · 35 km deep · 61 km away

The first 60 of 135.

Before

  1. 1.841 km NE of Adak, Alaska · 1815 days ago · 3 km deep · 51 km away
  2. 1.539 km SSE of Adak, Alaska · 1816 days ago · 26 km deep · 65 km away
  3. 1.967 km SE of Adak, Alaska · 1817 days ago · 22 km deep · 38 km away
  4. 1.926 km S of Adak, Alaska · 1817 days ago · 63 km deep · 74 km away
  5. 2.191 km S of Atka, Alaska · 1818 days ago · 4 km deep · 92 km away
  6. 1.763 km SE of Adak, Alaska · 1818 days ago · 27 km deep · 46 km away
  7. 1.657 km ENE of Adak, Alaska · 1818 days ago · 86 km deep · 29 km away
  8. 4.749 km NE of Adak, Alaska · 1818 days ago · 129 km deep · 60 km away
  9. 2.623 km SSE of Adak, Alaska · 1819 days ago · 69 km deep · 66 km away
  10. 3.837 km ENE of Adak, Alaska · 1819 days ago · 128 km deep · 43 km away
  11. 1.861 km SE of Adak, Alaska · 1821 days ago · 23 km deep · 48 km away
  12. 1.653 km SE of Adak, Alaska · 1822 days ago · 32 km deep · 46 km away
  13. 2.861 km SE of Adak, Alaska · 1823 days ago · 35 km deep · 59 km away
  14. 1.876 km ESE of Adak, Alaska · 1824 days ago · 20 km deep · 28 km away
  15. 2.951 km SSW of Atka, Alaska · 1824 days ago · 35 km deep · 74 km away
  16. 1.543 km S of Adak, Alaska · 1825 days ago · 43 km deep · 85 km away
  17. 1.619 km SSW of Adak, Alaska · 1826 days ago · 75 km deep · 84 km away
  18. 2.032 km E of Adak, Alaska · 1826 days ago · 75 km deep · 43 km away
  19. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1826 days ago · 56 km deep · 96 km away
  20. 1.945 km NE of Adak, Alaska · 1826 days ago · 135 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021cryphec. Read Thu, Sep 24, 2026, 7:04 AM UTC.