Alaska earthquakes

M1.7 earthquake 215 km WSW of Adak, Alaska

A magnitude 1.7 earthquake struck 215 km WSW of Adak, Alaska on Tue, Aug 31, 2021, 9:40 AM HADT (18:40 UTC), 14 km (9 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
1.7 (ml), micro
Local time
UTC
2021-08-31 18:40:24 UTC
Depth
14.2 km (8.8 mi), shallow
Epicenter
51.037° N, 179.433° 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
18

Nearby

Within 100 km, magnitude 1.5 and up: 114 in the 60 days after this one and 92 in the 30 days before it.

After

  1. 1.9257 km WSW of Adak, Alaska · 1850 days ago · 57 km deep · 75 km away
  2. 1.5253 km WSW of Adak, Alaska · 1850 days ago · 6 km deep · 39 km away
  3. 1.6248 km WSW of Adak, Alaska · 1850 days ago · 48 km deep · 61 km away
  4. 1.6194 km WSW of Adak, Alaska · 1850 days ago · 5 km deep · 22 km away
  5. 2.6221 km WSW of Adak, Alaska · 1850 days ago · 88 km deep · 42 km away
  6. 1.5272 km W of Adak, Alaska · 1850 days ago · 70 km deep · 97 km away
  7. 1.6232 km WSW of Adak, Alaska · 1849 days ago · 11 km deep · 63 km away
  8. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1849 days ago · 42 km deep · 56 km away
  9. 1.9232 km WSW of Adak, Alaska · 1849 days ago · 7 km deep · 62 km away
  10. 1.6234 km WSW of Adak, Alaska · 1849 days ago · 13 km deep · 64 km away
  11. 1.5124 km WSW of Adak, Alaska · 1849 days ago · 7 km deep · 96 km away
  12. 1.8231 km WSW of Adak, Alaska · 1849 days ago · 13 km deep · 63 km away
  13. 1.7299 km WSW of Adak, Alaska · 1848 days ago · 19 km deep · 92 km away
  14. 1.7271 km W of Adak, Alaska · 1848 days ago · 63 km deep · 98 km away
  15. 3.0123 km WSW of Adak, Alaska · 1847 days ago · 33 km deep · 92 km away
  16. 1.8124 km WSW of Adak, Alaska · 1847 days ago · 70 km deep · 97 km away
  17. 1.7189 km WSW of Adak, Alaska · 1847 days ago · 3 km deep · 27 km away
  18. 1.6240 km WSW of Adak, Alaska · 1846 days ago · 13 km deep · 35 km away
  19. 1.6245 km WSW of Adak, Alaska · 1846 days ago · 13 km deep · 40 km away
  20. 2.8199 km WSW of Adak, Alaska · 1846 days ago · 16 km deep · 21 km away
  21. 1.5225 km W of Adak, Alaska · 1845 days ago · 73 km deep · 73 km away
  22. 1.6124 km SW of Adak, Alaska · 1845 days ago · 26 km deep · 100 km away
  23. 2.9177 km WSW of Adak, Alaska · 1844 days ago · 30 km deep · 39 km away
  24. 1.5185 km W of Adak, Alaska · 1844 days ago · 15 km deep · 89 km away
  25. 1.6168 km WSW of Adak, Alaska · 1844 days ago · 26 km deep · 48 km away
  26. 1.5155 km W of Adak, Alaska · 1844 days ago · 2 km deep · 92 km away
  27. 2.9126 km SW of Adak, Alaska · 1842 days ago · 35 km deep · 98 km away
  28. 2.1147 km SW of Adak, Alaska · 1842 days ago · 26 km deep · 84 km away
  29. 1.7169 km W of Adak, Alaska · 1841 days ago · 12 km deep · 82 km away
  30. 1.5153 km WSW of Adak, Alaska · 1841 days ago · 14 km deep · 70 km away
  31. 1.6146 km W of Adak, Alaska · 1840 days ago · 16 km deep · 94 km away
  32. 1.8184 km WSW of Adak, Alaska · 1839 days ago · 22 km deep · 31 km away
  33. 1.6194 km WSW of Adak, Alaska · 1838 days ago · 20 km deep · 34 km away
  34. 2.8223 km W of Adak, Alaska · 1838 days ago · 78 km deep · 65 km away
  35. 2.0133 km W of Adak, Alaska · 1836 days ago · 15 km deep · 96 km away
  36. 2.1136 km W of Adak, AK · 1836 days ago · 17 km deep · 95 km away
  37. 2.7215 km W of Adak, Alaska · 1836 days ago · 73 km deep · 64 km away
  38. 2.7201 km WSW of Adak, Alaska · 1833 days ago · 16 km deep · 14 km away
  39. 1.6124 km WSW of Adak, Alaska · 1832 days ago · 15 km deep · 91 km away
  40. 2.8220 km WSW of Adak, Alaska · 1832 days ago · 22 km deep · 7 km away
  41. 4.0257 km WSW of Adak, Alaska · 1830 days ago · 106 km deep · 77 km away
  42. 2.0168 km WSW of Adak, Alaska · 1830 days ago · 26 km deep · 51 km away
  43. 2.5219 km WSW of Adak, Alaska · 1829 days ago · 26 km deep · 4 km away
  44. 2.7221 km WSW of Adak, Alaska · 1829 days ago · 15 km deep · 9 km away
  45. 1.9129 km W of Adak, Alaska · 1829 days ago · 13 km deep · 98 km away
  46. 1.8129 km WSW of Adak, Alaska · 1829 days ago · 11 km deep · 90 km away
  47. 1.9222 km WSW of Adak, Alaska · 1829 days ago · 12 km deep · 55 km away
  48. 1.6165 km WSW of Adak, Alaska · 1829 days ago · 24 km deep · 51 km away
  49. 1.5208 km WSW of Adak, Alaska · 1828 days ago · 22 km deep · 19 km away
  50. 5.5185 km WSW of Adak, Alaska · 1828 days ago · 18 km deep · 31 km away
  51. 3.2187 km WSW of Adak, Alaska · 1828 days ago · 33 km deep · 28 km away
  52. 3.4184 km WSW of Adak, Alaska · 1828 days ago · 28 km deep · 32 km away
  53. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1828 days ago · 21 km deep · 31 km away
  54. 1.5Rat Islands, Aleutian Islands, Alaska · 1828 days ago · 57 km deep · 72 km away
  55. 6.1187 km WSW of Adak, Alaska · 1828 days ago · 18 km deep · 30 km away · felt by 7 · tsunami flag
  56. 2.0191 km WSW of Adak, Alaska · 1828 days ago · 10 km deep · 31 km away
  57. 2.0178 km WSW of Adak, Alaska · 1827 days ago · 22 km deep · 37 km away
  58. 1.6191 km WSW of Adak, Alaska · 1827 days ago · 9 km deep · 28 km away
  59. 2.0189 km WSW of Adak, Alaska · 1827 days ago · 20 km deep · 29 km away
  60. 1.7188 km WSW of Adak, Alaska · 1827 days ago · 21 km deep · 28 km away

The first 60 of 114.

Before

  1. 1.7Rat Islands, Aleutian Islands, Alaska · 1852 days ago · 21 km deep · 95 km away
  2. 1.9243 km W of Adak, Alaska · 1852 days ago · 70 km deep · 86 km away
  3. 2.5141 km WSW of Adak, Alaska · 1853 days ago · 30 km deep · 74 km away
  4. 1.8145 km WSW of Adak, Alaska · 1854 days ago · 23 km deep · 72 km away
  5. 1.9230 km W of Adak, Alaska · 1854 days ago · 93 km deep · 88 km away
  6. 1.8211 km W of Adak, Alaska · 1854 days ago · 92 km deep · 79 km away
  7. 1.9141 km WSW of Adak, Alaska · 1854 days ago · 9 km deep · 76 km away
  8. 1.5254 km WSW of Adak, Alaska · 1855 days ago · 16 km deep · 66 km away
  9. 1.5171 km W of Adak, Alaska · 1855 days ago · 5 km deep · 81 km away
  10. 3.1248 km W of Adak, Alaska · 1856 days ago · 77 km deep · 83 km away
  11. 1.9217 km WSW of Adak, Alaska · 1857 days ago · 6 km deep · 13 km away
  12. 1.6294 km WSW of Adak, Alaska · 1857 days ago · 37 km deep · 96 km away
  13. 1.6141 km WSW of Adak, Alaska · 1857 days ago · 13 km deep · 75 km away
  14. 1.5139 km WSW of Adak, Alaska · 1857 days ago · 22 km deep · 78 km away
  15. 1.8137 km WSW of Adak, Alaska · 1857 days ago · 9 km deep · 81 km away
  16. 3.4142 km WSW of Adak, Alaska · 1857 days ago · 17 km deep · 74 km away
  17. 1.7266 km WSW of Adak, Alaska · 1858 days ago · 19 km deep · 63 km away
  18. 1.9201 km WSW of Adak, Alaska · 1858 days ago · 70 km deep · 51 km away
  19. 3.6134 km WSW of Adak, Alaska · 1858 days ago · 41 km deep · 82 km away
  20. 1.9135 km WSW of Adak, Alaska · 1859 days ago · 35 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021b66jroa. Read Sat, Sep 26, 2026, 5:29 AM UTC.