Alaska earthquakes

M1.8 earthquake 77 km ESE of Atka, Alaska

A magnitude 1.8 earthquake struck 77 km ESE of Atka, Alaska on Sat, Aug 28, 2021, 9:36 AM HADT (18:36 UTC), 34 km (21 mi) below the surface.

A larger quake followed: M4.9 81 km S of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2021-08-28 18:36:08 UTC
Depth
33.5 km (20.8 mi), shallow
Epicenter
51.874° N, 173.205° 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
20

Nearby

Within 100 km, magnitude 1.5 and up: 46 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 1.647 km ESE of Atka, Alaska · 1854 days ago · 11 km deep · 31 km away
  2. 1.836 km NE of Atka, Alaska · 1854 days ago · 119 km deep · 78 km away
  3. 2.2140 km SE of Atka, Alaska · 1852 days ago · 14 km deep · 70 km away
  4. 1.753 km SSE of Atka, Alaska · 1851 days ago · 35 km deep · 44 km away
  5. 2.936 km ENE of Atka, Alaska · 1851 days ago · 179 km deep · 64 km away
  6. 2.018 km W of Atka, Alaska · 1851 days ago · 170 km deep · 93 km away
  7. 2.7107 km ESE of Atka, Alaska · 1851 days ago · 35 km deep · 34 km away
  8. 2.5109 km ESE of Atka, Alaska · 1851 days ago · 33 km deep · 34 km away
  9. 3.1113 km SE of Atka, Alaska · 1850 days ago · 35 km deep · 42 km away
  10. 2.811 km NNE of Atka, Alaska · 1849 days ago · 10 km deep · 77 km away
  11. 2.866 km S of Atka, Alaska · 1849 days ago · 35 km deep · 84 km away
  12. 2.5112 km ESE of Atka, Alaska · 1847 days ago · 35 km deep · 39 km away
  13. 2.114 km NW of Atka, Alaska · 1847 days ago · 155 km deep · 91 km away
  14. 1.935 km NE of Atka, Alaska · 1846 days ago · 145 km deep · 72 km away
  15. 2.893 km SSE of Atka, Alaska · 1846 days ago · 35 km deep · 69 km away
  16. 1.554 km ENE of Atka, Alaska · 1846 days ago · 4 km deep · 68 km away
  17. 3.0140 km E of Atka, Alaska · 1846 days ago · 59 km deep · 79 km away
  18. 3.147 km S of Atka, Alaska · 1844 days ago · 27 km deep · 74 km away
  19. 3.131 km S of Atka, Alaska · 1844 days ago · 4 km deep · 74 km away
  20. 1.950 km SSW of Atka, Alaska · 1843 days ago · 61 km deep · 83 km away
  21. 2.9122 km SE of Atka, Alaska · 1841 days ago · 30 km deep · 47 km away
  22. 3.1110 km SE of Atka, Alaska · 1841 days ago · 35 km deep · 46 km away
  23. 2.687 km S of Atka, Alaska · 1837 days ago · 35 km deep · 85 km away
  24. 1.947 km SSW of Atka, Alaska · 1837 days ago · 53 km deep · 80 km away
  25. 2.7105 km SSE of Atka, Alaska · 1834 days ago · 35 km deep · 55 km away
  26. 2.796 km SSE of Atka, Alaska · 1834 days ago · 35 km deep · 72 km away
  27. 2.332 km ESE of Atka, Alaska · 1834 days ago · 126 km deep · 45 km away
  28. 2.777 km SE of Atka, Alaska · 1834 days ago · 35 km deep · 12 km away
  29. 3.464 km SSE of Atka, Alaska · 1833 days ago · 35 km deep · 55 km away
  30. 1.664 km SSW of Atka, Alaska · 1831 days ago · 21 km deep · 95 km away
  31. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1831 days ago · 56 km deep · 65 km away
  32. 2.951 km SSW of Atka, Alaska · 1828 days ago · 35 km deep · 88 km away
  33. 2.632 km ESE of Atka, Alaska · 1828 days ago · 80 km deep · 45 km away
  34. 2.191 km S of Atka, Alaska · 1822 days ago · 4 km deep · 100 km away
  35. 1.993 km ESE of Atka, Alaska · 1821 days ago · 58 km deep · 18 km away
  36. 2.881 km SSE of Atka, Alaska · 1818 days ago · 35 km deep · 50 km away
  37. 3.633 km SSW of Atka, Alaska · 1818 days ago · 75 km deep · 75 km away
  38. 3.050 km SSE of Atka, Alaska · 1815 days ago · 35 km deep · 50 km away
  39. 2.995 km S of Atka, Alaska · 1814 days ago · 17 km deep · 98 km away
  40. 3.127 km SW of Atka, Alaska · 1814 days ago · 35 km deep · 87 km away
  41. 4.981 km S of Atka, Alaska · 1813 days ago · 35 km deep · 95 km away
  42. 3.0108 km SE of Atka, Alaska · 1811 days ago · 31 km deep · 37 km away
  43. 3.134 km WSW of Atka, Alaska · 1810 days ago · 138 km deep · 99 km away
  44. 1.822 km SW of Atka, Alaska · 1809 days ago · 72 km deep · 90 km away
  45. 2.929 km SSW of Atka, Alaska · 1798 days ago · 10 km deep · 76 km away
  46. 1.833 km SSW of Atka, Alaska · 1798 days ago · 71 km deep · 84 km away

Before

  1. 1.661 km SSE of Atka, Alaska · 1857 days ago · 25 km deep · 51 km away
  2. 2.085 km SSE of Atka, Alaska · 1858 days ago · 4 km deep · 48 km away
  3. 2.983 km SE of Atka, Alaska · 1858 days ago · 35 km deep · 12 km away
  4. 1.542 km ESE of Atka, Alaska · 1859 days ago · 14 km deep · 35 km away
  5. 1.74 km NNE of Atka, Alaska · 1861 days ago · 129 km deep · 77 km away
  6. 1.529 km ESE of Atka, Alaska · 1861 days ago · 36 km deep · 49 km away
  7. 1.690 km SSE of Atka, Alaska · 1861 days ago · 41 km deep · 63 km away
  8. 2.0163 km SE of Atka, Alaska · 1862 days ago · 20 km deep · 96 km away
  9. 1.739 km ESE of Atka, Alaska · 1862 days ago · 23 km deep · 38 km away
  10. 1.934 km SSW of Atka, Alaska · 1862 days ago · 71 km deep · 87 km away
  11. 2.318 km N of Atka, Alaska · 1863 days ago · 146 km deep · 85 km away
  12. 1.921 km SW of Atka, Alaska · 1863 days ago · 9 km deep · 86 km away
  13. 3.0167 km SE of Atka, Alaska · 1864 days ago · 10 km deep · 96 km away
  14. 2.059 km SSE of Atka, Alaska · 1864 days ago · 15 km deep · 45 km away
  15. 1.967 km ESE of Atka, Alaska · 1864 days ago · 60 km deep · 10 km away
  16. 2.6130 km ESE of Atka, Alaska · 1864 days ago · 35 km deep · 59 km away
  17. 2.853 km SSE of Atka, Alaska · 1864 days ago · 35 km deep · 48 km away
  18. 2.9111 km E of Atka, Alaska · 1864 days ago · 25 km deep · 44 km away
  19. 1.742 km SW of Atka, Alaska · 1864 days ago · 53 km deep · 97 km away
  20. 2.5102 km SSE of Atka, Alaska · 1864 days ago · 10 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021b17wtv2. Read Mon, Sep 28, 2026, 10:58 AM UTC.