Alaska earthquakes

M1.9 earthquake 246 km WSW of Adak, Alaska

A magnitude 1.9 earthquake struck 246 km WSW of Adak, Alaska on Tue, Aug 17, 2021, 1:27 AM GMT-12 (13:27 UTC), 26 km (16 mi) below the surface.

A larger quake followed: M6.1 187 km WSW of Adak, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-08-17 13:27:15 UTC
Depth
25.6 km (15.9 mi), shallow
Epicenter
50.945° N, 179.858° 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: 100 in the 60 days after this one and 48 in the 30 days before it.

After

  1. 3.2216 km WSW of Adak, Alaska · 1864 days ago · 35 km deep · 57 km away
  2. 1.9241 km WSW of Adak, Alaska · 1863 days ago · 26 km deep · 7 km away
  3. 1.8243 km WSW of Adak, Alaska · 1863 days ago · 39 km deep · 19 km away
  4. 1.8175 km WSW of Adak, Alaska · 1862 days ago · 72 km deep · 81 km away
  5. 2.0294 km WSW of Adak, Alaska · 1862 days ago · 23 km deep · 67 km away
  6. 1.6219 km W of Adak, Alaska · 1862 days ago · 92 km deep · 93 km away
  7. 3.1Rat Islands, Aleutian Islands, Alaska · 1862 days ago · 10 km deep · 60 km away
  8. 1.6197 km WSW of Adak, Alaska · 1862 days ago · 75 km deep · 69 km away
  9. 3.6262 km W of Adak, Alaska · 1861 days ago · 80 km deep · 87 km away
  10. 1.9156 km WSW of Adak, Alaska · 1861 days ago · 17 km deep · 94 km away
  11. 1.7296 km WSW of Adak, Alaska · 1861 days ago · 42 km deep · 74 km away
  12. 2.9256 km WSW of Adak, Alaska · 1861 days ago · 25 km deep · 42 km away
  13. 3.8272 km WSW of Adak, Alaska · 1861 days ago · 26 km deep · 46 km away
  14. 2.5246 km WSW of Adak, Alaska · 1859 days ago · 10 km deep · 10 km away
  15. 1.6247 km WSW of Adak, Alaska · 1858 days ago · 63 km deep · 64 km away
  16. 1.9194 km WSW of Adak, Alaska · 1857 days ago · 13 km deep · 53 km away
  17. 1.7Rat Islands, Aleutian Islands, Alaska · 1857 days ago · 51 km deep · 97 km away
  18. 1.9201 km WSW of Adak, Alaska · 1857 days ago · 70 km deep · 66 km away
  19. 1.7266 km WSW of Adak, Alaska · 1856 days ago · 19 km deep · 41 km away
  20. 1.6294 km WSW of Adak, Alaska · 1855 days ago · 37 km deep · 73 km away
  21. 1.9217 km WSW of Adak, Alaska · 1855 days ago · 6 km deep · 34 km away
  22. 3.1248 km W of Adak, Alaska · 1855 days ago · 77 km deep · 77 km away
  23. 1.5254 km WSW of Adak, Alaska · 1853 days ago · 16 km deep · 54 km away
  24. 1.8211 km W of Adak, Alaska · 1852 days ago · 92 km deep · 88 km away
  25. 1.9230 km W of Adak, Alaska · 1852 days ago · 93 km deep · 90 km away
  26. 1.9243 km W of Adak, Alaska · 1850 days ago · 70 km deep · 83 km away
  27. 1.7Rat Islands, Aleutian Islands, Alaska · 1850 days ago · 21 km deep · 68 km away
  28. 1.7215 km WSW of Adak, Alaska · 1850 days ago · 14 km deep · 31 km away
  29. 1.9257 km WSW of Adak, Alaska · 1848 days ago · 57 km deep · 64 km away
  30. 1.5253 km WSW of Adak, Alaska · 1848 days ago · 6 km deep · 9 km away
  31. 1.6248 km WSW of Adak, Alaska · 1848 days ago · 48 km deep · 51 km away
  32. 1.6194 km WSW of Adak, Alaska · 1848 days ago · 5 km deep · 53 km away
  33. 2.6221 km WSW of Adak, Alaska · 1848 days ago · 88 km deep · 48 km away
  34. 1.5272 km W of Adak, Alaska · 1848 days ago · 70 km deep · 84 km away
  35. 1.6232 km WSW of Adak, Alaska · 1847 days ago · 11 km deep · 63 km away
  36. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1847 days ago · 42 km deep · 85 km away
  37. 1.9232 km WSW of Adak, Alaska · 1847 days ago · 7 km deep · 61 km away
  38. 1.6234 km WSW of Adak, Alaska · 1847 days ago · 13 km deep · 63 km away
  39. 1.8231 km WSW of Adak, Alaska · 1847 days ago · 13 km deep · 63 km away
  40. 1.7299 km WSW of Adak, Alaska · 1846 days ago · 19 km deep · 63 km away
  41. 1.7271 km W of Adak, Alaska · 1846 days ago · 63 km deep · 86 km away
  42. 1.7189 km WSW of Adak, Alaska · 1845 days ago · 3 km deep · 58 km away
  43. 1.6240 km WSW of Adak, Alaska · 1844 days ago · 13 km deep · 22 km away
  44. 1.6245 km WSW of Adak, Alaska · 1844 days ago · 13 km deep · 25 km away
  45. 2.8199 km WSW of Adak, Alaska · 1844 days ago · 16 km deep · 51 km away
  46. 1.5225 km W of Adak, Alaska · 1843 days ago · 73 km deep · 76 km away
  47. 2.9177 km WSW of Adak, Alaska · 1842 days ago · 30 km deep · 70 km away
  48. 1.6168 km WSW of Adak, Alaska · 1842 days ago · 26 km deep · 79 km away
  49. 2.9Rat Islands, Aleutian Islands, Alaska · 1840 days ago · 33 km deep · 90 km away
  50. 2.3Rat Islands, Aleutian Islands, Alaska · 1840 days ago · 28 km deep · 88 km away
  51. 1.5153 km WSW of Adak, Alaska · 1839 days ago · 14 km deep · 98 km away
  52. 2.7272 km W of Adak, Alaska · 1838 days ago · 75 km deep · 91 km away
  53. 1.8184 km WSW of Adak, Alaska · 1837 days ago · 22 km deep · 62 km away
  54. 1.6194 km WSW of Adak, Alaska · 1837 days ago · 20 km deep · 58 km away
  55. 2.8223 km W of Adak, Alaska · 1837 days ago · 78 km deep · 69 km away
  56. 2.7215 km W of Adak, Alaska · 1834 days ago · 73 km deep · 72 km away
  57. 2.7201 km WSW of Adak, Alaska · 1831 days ago · 16 km deep · 46 km away
  58. 2.8220 km WSW of Adak, Alaska · 1830 days ago · 22 km deep · 27 km away
  59. 1.5Rat Islands, Aleutian Islands, Alaska · 1829 days ago · 7 km deep · 97 km away
  60. 4.0257 km WSW of Adak, Alaska · 1829 days ago · 106 km deep · 65 km away

The first 60 of 100.

Before

  1. 1.5267 km W of Adak, Alaska · 1864 days ago · 67 km deep · 85 km away
  2. 3.2196 km WSW of Adak, Alaska · 1865 days ago · 35 km deep · 51 km away
  3. 1.7228 km WSW of Adak, Alaska · 1865 days ago · 19 km deep · 38 km away
  4. 1.8216 km W of Adak, Alaska · 1865 days ago · 74 km deep · 77 km away
  5. 3.1216 km WSW of Adak, Alaska · 1866 days ago · 12 km deep · 32 km away
  6. 2.6218 km WSW of Adak, Alaska · 1867 days ago · 10 km deep · 34 km away
  7. 2.8205 km WSW of Adak, Alaska · 1867 days ago · 33 km deep · 41 km away
  8. 1.7199 km WSW of Adak, Alaska · 1867 days ago · 26 km deep · 47 km away
  9. 1.7176 km WSW of Adak, Alaska · 1869 days ago · 17 km deep · 73 km away
  10. 2.0245 km WSW of Adak, Alaska · 1869 days ago · 13 km deep · 18 km away
  11. 1.5213 km W of Adak, Alaska · 1869 days ago · 73 km deep · 76 km away
  12. 3.3233 km WSW of Adak, Alaska · 1869 days ago · 65 km deep · 58 km away
  13. 1.6243 km WSW of Adak, Alaska · 1869 days ago · 17 km deep · 44 km away
  14. 1.7Rat Islands, Aleutian Islands, Alaska · 1870 days ago · 18 km deep · 97 km away
  15. 1.6206 km WSW of Adak, Alaska · 1870 days ago · 47 km deep · 52 km away
  16. 2.9294 km WSW of Adak, Alaska · 1870 days ago · 59 km deep · 86 km away
  17. 3.0270 km WSW of Adak, Alaska · 1871 days ago · 51 km deep · 59 km away
  18. 1.5234 km WSW of Adak, Alaska · 1871 days ago · 53 km deep · 60 km away
  19. 1.7227 km WSW of Adak, Alaska · 1872 days ago · 50 km deep · 49 km away
  20. 2.3Rat Islands, Aleutian Islands, Alaska · 1872 days ago · 30 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021aixyxhc. Read Thu, Sep 24, 2026, 11:47 AM UTC.