Alaska earthquakes

M1.6 earthquake 240 km WSW of Adak, Alaska

A magnitude 1.6 earthquake struck 240 km WSW of Adak, Alaska on Sun, Sep 5, 2021, 5:52 PM GMT-12 (05:52 UTC), 13 km (8 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
1.6 (ml), micro
Local time
UTC
2021-09-06 05:52:43 UTC
Depth
13.1 km (8.1 mi), shallow
Epicenter
51.143° N, 179.899° 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: 111 in the 60 days after this one and 78 in the 30 days before it.

After

  1. 1.6245 km WSW of Adak, Alaska · 1847 days ago · 13 km deep · 6 km away
  2. 2.8199 km WSW of Adak, Alaska · 1846 days ago · 16 km deep · 56 km away
  3. 2.6245 km W of Adak, Alaska · 1846 days ago · 174 km deep · 92 km away
  4. 1.5225 km W of Adak, Alaska · 1845 days ago · 73 km deep · 54 km away
  5. 2.9177 km WSW of Adak, Alaska · 1845 days ago · 30 km deep · 69 km away
  6. 1.5185 km W of Adak, Alaska · 1845 days ago · 15 km deep · 86 km away
  7. 1.6168 km WSW of Adak, Alaska · 1845 days ago · 26 km deep · 79 km away
  8. 2.2228 km W of Adak, Alaska · 1843 days ago · 149 km deep · 91 km away
  9. 2.9Rat Islands, Aleutian Islands, Alaska · 1843 days ago · 33 km deep · 82 km away
  10. 2.3Rat Islands, Aleutian Islands, Alaska · 1842 days ago · 28 km deep · 96 km away
  11. 3.9250 km W of Adak, Alaska · 1842 days ago · 131 km deep · 84 km away
  12. 1.7169 km W of Adak, Alaska · 1842 days ago · 12 km deep · 87 km away
  13. 1.5153 km WSW of Adak, Alaska · 1841 days ago · 14 km deep · 88 km away
  14. 2.7272 km W of Adak, Alaska · 1841 days ago · 75 km deep · 71 km away
  15. 1.8184 km WSW of Adak, Alaska · 1839 days ago · 22 km deep · 60 km away
  16. 1.6194 km WSW of Adak, Alaska · 1839 days ago · 20 km deep · 47 km away
  17. 2.8223 km W of Adak, Alaska · 1839 days ago · 78 km deep · 47 km away
  18. 2.7215 km W of Adak, Alaska · 1837 days ago · 73 km deep · 51 km away
  19. 2.7201 km WSW of Adak, Alaska · 1834 days ago · 16 km deep · 47 km away
  20. 2.8220 km WSW of Adak, Alaska · 1833 days ago · 22 km deep · 28 km away
  21. 1.9252 km W of Adak, Alaska · 1832 days ago · 95 km deep · 80 km away
  22. 1.5Rat Islands, Aleutian Islands, Alaska · 1832 days ago · 7 km deep · 88 km away
  23. 1.8Rat Islands, Aleutian Islands, Alaska · 1831 days ago · 56 km deep · 96 km away
  24. 4.0257 km WSW of Adak, Alaska · 1831 days ago · 106 km deep · 45 km away
  25. 1.6Rat Islands, Aleutian Islands, Alaska · 1831 days ago · 30 km deep · 95 km away
  26. 2.0168 km WSW of Adak, Alaska · 1830 days ago · 26 km deep · 72 km away
  27. 2.5219 km WSW of Adak, Alaska · 1830 days ago · 26 km deep · 32 km away
  28. 2.7221 km WSW of Adak, Alaska · 1830 days ago · 15 km deep · 26 km away
  29. 1.9222 km WSW of Adak, Alaska · 1830 days ago · 12 km deep · 38 km away
  30. 1.6165 km WSW of Adak, Alaska · 1830 days ago · 24 km deep · 81 km away
  31. 1.5208 km WSW of Adak, Alaska · 1829 days ago · 22 km deep · 32 km away
  32. 5.5185 km WSW of Adak, Alaska · 1829 days ago · 18 km deep · 61 km away
  33. 3.2187 km WSW of Adak, Alaska · 1829 days ago · 33 km deep · 57 km away
  34. 3.4184 km WSW of Adak, Alaska · 1829 days ago · 28 km deep · 62 km away
  35. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1829 days ago · 21 km deep · 61 km away
  36. 1.5Rat Islands, Aleutian Islands, Alaska · 1829 days ago · 57 km deep · 40 km away
  37. 6.1187 km WSW of Adak, Alaska · 1829 days ago · 18 km deep · 62 km away · felt by 7 · tsunami flag
  38. 2.0191 km WSW of Adak, Alaska · 1829 days ago · 10 km deep · 65 km away
  39. 2.0178 km WSW of Adak, Alaska · 1828 days ago · 22 km deep · 68 km away
  40. 1.6191 km WSW of Adak, Alaska · 1828 days ago · 9 km deep · 62 km away
  41. 2.0189 km WSW of Adak, Alaska · 1828 days ago · 20 km deep · 62 km away
  42. 1.7188 km WSW of Adak, Alaska · 1828 days ago · 21 km deep · 58 km away
  43. 1.8182 km WSW of Adak, Alaska · 1828 days ago · 26 km deep · 64 km away
  44. 1.6221 km WSW of Adak, Alaska · 1827 days ago · 50 km deep · 34 km away
  45. 2.0211 km W of Adak, Alaska · 1827 days ago · 104 km deep · 73 km away
  46. 3.1190 km WSW of Adak, Alaska · 1826 days ago · 32 km deep · 52 km away
  47. 3.1179 km WSW of Adak, Alaska · 1826 days ago · 63 km deep · 62 km away
  48. 2.6247 km WSW of Adak, Alaska · 1824 days ago · 13 km deep · 21 km away
  49. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1824 days ago · 15 km deep · 29 km away
  50. 2.3172 km WSW of Adak, Alaska · 1822 days ago · 21 km deep · 68 km away
  51. 2.8209 km WSW of Adak, Alaska · 1822 days ago · 5 km deep · 49 km away
  52. 1.8207 km WSW of Adak, Alaska · 1821 days ago · 8 km deep · 41 km away
  53. 1.7144 km WSW of Adak, Alaska · 1820 days ago · 24 km deep · 99 km away
  54. 1.5174 km WSW of Adak, Alaska · 1820 days ago · 8 km deep · 67 km away
  55. 1.9175 km WSW of Adak, Alaska · 1820 days ago · 20 km deep · 71 km away
  56. 3.9246 km WSW of Adak, Alaska · 1816 days ago · 10 km deep · 14 km away
  57. 1.8244 km W of Adak, Alaska · 1816 days ago · 61 km deep · 45 km away
  58. 2.5194 km WSW of Adak, Alaska · 1816 days ago · 18 km deep · 52 km away
  59. 2.4Rat Islands, Aleutian Islands, Alaska · 1815 days ago · 70 km deep · 90 km away
  60. 2.8266 km W of Adak, Alaska · 1814 days ago · 86 km deep · 73 km away

The first 60 of 111.

Before

  1. 1.7189 km WSW of Adak, Alaska · 1848 days ago · 3 km deep · 59 km away
  2. 1.7271 km W of Adak, Alaska · 1849 days ago · 63 km deep · 67 km away
  3. 1.7299 km WSW of Adak, Alaska · 1849 days ago · 19 km deep · 60 km away
  4. 1.8231 km WSW of Adak, Alaska · 1849 days ago · 13 km deep · 41 km away
  5. 1.6234 km WSW of Adak, Alaska · 1849 days ago · 13 km deep · 40 km away
  6. 1.9232 km WSW of Adak, Alaska · 1849 days ago · 7 km deep · 39 km away
  7. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1850 days ago · 42 km deep · 77 km away
  8. 1.6232 km WSW of Adak, Alaska · 1850 days ago · 11 km deep · 40 km away
  9. 1.5272 km W of Adak, Alaska · 1850 days ago · 70 km deep · 65 km away
  10. 2.6221 km WSW of Adak, Alaska · 1851 days ago · 88 km deep · 27 km away
  11. 1.6194 km WSW of Adak, Alaska · 1851 days ago · 5 km deep · 55 km away
  12. 1.6248 km WSW of Adak, Alaska · 1851 days ago · 48 km deep · 30 km away
  13. 1.5253 km WSW of Adak, Alaska · 1851 days ago · 6 km deep · 20 km away
  14. 1.9257 km WSW of Adak, Alaska · 1851 days ago · 57 km deep · 44 km away
  15. 1.7215 km WSW of Adak, Alaska · 1852 days ago · 14 km deep · 35 km away
  16. 1.7Rat Islands, Aleutian Islands, Alaska · 1853 days ago · 21 km deep · 62 km away
  17. 1.9243 km W of Adak, Alaska · 1853 days ago · 70 km deep · 61 km away
  18. 2.5141 km WSW of Adak, Alaska · 1854 days ago · 30 km deep · 100 km away
  19. 1.9230 km W of Adak, Alaska · 1855 days ago · 93 km deep · 68 km away
  20. 1.8211 km W of Adak, Alaska · 1855 days ago · 92 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bfw3u4i. Read Sun, Sep 27, 2026, 12:30 AM UTC.