Alaska earthquakes

M1.8 earthquake 164 km S of Adak, Alaska

A magnitude 1.8 earthquake struck 164 km S of Adak, Alaska on Tue, Jul 27, 2021, 2:12 AM HADT (11:12 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M4.5 161 km S of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.8 (ml), micro
Local time
UTC
2021-07-27 11:12:09 UTC
Depth
17.3 km (10.7 mi), shallow
Epicenter
50.401° N, 176.846° 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
35

Nearby

Within 100 km, magnitude 1.5 and up: 31 in the 60 days after this one and 20 in the 30 days before it.

After

  1. 1.570 km S of Adak, Alaska · 1885 days ago · 21 km deep · 96 km away
  2. 1.9100 km SSE of Adak, Alaska · 1883 days ago · 14 km deep · 76 km away
  3. 1.9176 km SSW of Adak, Alaska · 1882 days ago · 26 km deep · 82 km away
  4. 1.9211 km SSW of Adak, Alaska · 1882 days ago · 26 km deep · 98 km away
  5. 1.897 km S of Adak, Alaska · 1880 days ago · 26 km deep · 67 km away
  6. 1.578 km SSE of Adak, Alaska · 1880 days ago · 19 km deep · 98 km away
  7. 2.5168 km SSW of Adak, Alaska · 1880 days ago · 10 km deep · 74 km away
  8. 1.9180 km S of Adak, Alaska · 1876 days ago · 24 km deep · 44 km away
  9. 2.1226 km SSW of Adak, Alaska · 1876 days ago · 20 km deep · 86 km away
  10. 1.6101 km SSE of Adak, Alaska · 1873 days ago · 24 km deep · 96 km away
  11. 3.2198 km S of Adak, Alaska · 1867 days ago · 10 km deep · 34 km away
  12. 2.6101 km SSW of Adak, Alaska · 1865 days ago · 24 km deep · 75 km away
  13. 1.7102 km SSW of Adak, Alaska · 1865 days ago · 47 km deep · 78 km away
  14. 1.5137 km SSW of Adak, Alaska · 1862 days ago · 26 km deep · 78 km away
  15. 1.9241 km S of Adak, Alaska · 1862 days ago · 12 km deep · 77 km away
  16. 1.7209 km S of Adak, Alaska · 1861 days ago · 21 km deep · 46 km away
  17. 3.4200 km SSW of Adak, Alaska · 1861 days ago · 10 km deep · 44 km away
  18. 2.1186 km SSW of Adak, Alaska · 1860 days ago · 26 km deep · 61 km away
  19. 2.687 km S of Adak, Alaska · 1859 days ago · 35 km deep · 78 km away
  20. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1855 days ago · 15 km deep · 78 km away
  21. 2.0183 km S of Adak, Alaska · 1851 days ago · 25 km deep · 23 km away
  22. 1.979 km SSW of Adak, Alaska · 1850 days ago · 28 km deep · 94 km away
  23. 1.8147 km S of Adak, Alaska · 1848 days ago · 25 km deep · 37 km away
  24. 1.992 km SSE of Adak, Alaska · 1847 days ago · 14 km deep · 89 km away
  25. 1.7111 km S of Adak, Alaska · 1843 days ago · 35 km deep · 54 km away
  26. 2.7105 km SSE of Adak, Alaska · 1842 days ago · 10 km deep · 71 km away
  27. 4.5161 km S of Adak, Alaska · 1835 days ago · 10 km deep · 41 km away
  28. 2.4163 km S of Adak, Alaska · 1835 days ago · 24 km deep · 41 km away
  29. 3.4204 km SSW of Adak, Alaska · 1835 days ago · 10 km deep · 84 km away
  30. 3.1164 km S of Adak, Alaska · 1834 days ago · 10 km deep · 41 km away
  31. 1.579 km S of Adak, Alaska · 1827 days ago · 26 km deep · 90 km away

Before

  1. 1.587 km S of Adak, Alaska · 1885 days ago · 39 km deep · 82 km away
  2. 3.988 km S of Adak, Alaska · 1886 days ago · 23 km deep · 80 km away
  3. 3.892 km S of Adak, Alaska · 1886 days ago · 14 km deep · 77 km away
  4. 3.889 km S of Adak, Alaska · 1886 days ago · 16 km deep · 79 km away
  5. 4.087 km S of Adak, Alaska · 1886 days ago · 10 km deep · 79 km away
  6. 3.4219 km SSW of Adak, Alaska · 1886 days ago · 43 km deep · 71 km away
  7. 2.172 km S of Adak, Alaska · 1887 days ago · 26 km deep · 93 km away
  8. 2.776 km S of Adak, Alaska · 1887 days ago · 20 km deep · 90 km away
  9. 3.869 km S of Adak, Alaska · 1887 days ago · 35 km deep · 98 km away
  10. 2.370 km S of Adak, Alaska · 1887 days ago · 21 km deep · 96 km away
  11. 1.585 km S of Adak, Alaska · 1888 days ago · 17 km deep · 83 km away
  12. 4.177 km S of Adak, Alaska · 1888 days ago · 29 km deep · 92 km away
  13. 1.986 km S of Adak, Alaska · 1888 days ago · 26 km deep · 83 km away
  14. 2.267 km S of Adak, Alaska · 1888 days ago · 21 km deep · 98 km away
  15. 4.074 km S of Adak, Alaska · 1888 days ago · 35 km deep · 95 km away
  16. 1.9170 km SSW of Adak, Alaska · 1888 days ago · 26 km deep · 26 km away
  17. 1.679 km SSE of Adak, Alaska · 1891 days ago · 18 km deep · 96 km away
  18. 3.694 km SSE of Adak, Alaska · 1892 days ago · 25 km deep · 80 km away
  19. 1.6183 km S of Adak, Alaska · 1898 days ago · 5 km deep · 20 km away
  20. 1.780 km SSW of Adak, Alaska · 1899 days ago · 26 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0219k6ekod. Read Thu, Sep 24, 2026, 10:52 AM UTC.