Alaska earthquakes

M1.6 earthquake 251 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 251 km W of Adak, Alaska on Tue, Nov 9, 2021, 3:49 AM GMT+12 (15:49 UTC), 1 km (0 mi) below the surface.

A larger quake followed: M4.5 Rat Islands, Aleutian Islands, 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
2021-11-08 15:49:41 UTC
Depth
0.7 km (0.4 mi), shallow
Epicenter
51.988° N, 179.714° E
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.

Location uncertainty
About 0.8 km horizontally, 4.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
275°, poorly surrounded by stations
Stations used
6

Nearby

Within 100 km, magnitude 1.5 and up: 102 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 2.0181 km W of Adak, Alaska · 1782 days ago · 77 km deep · 77 km away
  2. 2.8Rat Islands, Aleutian Islands, Alaska · 1779 days ago · 41 km deep · 92 km away
  3. 1.8Rat Islands, Aleutian Islands, Alaska · 1778 days ago · 7 km deep · 100 km away
  4. 1.7Rat Islands, Aleutian Islands, Alaska · 1778 days ago · 2 km deep · 87 km away
  5. 1.9281 km WSW of Adak, Alaska · 1778 days ago · 46 km deep · 73 km away
  6. 2.7200 km W of Adak, Alaska · 1777 days ago · 89 km deep · 62 km away
  7. 2.2Rat Islands, Aleutian Islands, Alaska · 1777 days ago · 69 km deep · 64 km away
  8. 2.6256 km WSW of Adak, Alaska · 1773 days ago · 31 km deep · 81 km away
  9. 2.5Rat Islands, Aleutian Islands, Alaska · 1772 days ago · 42 km deep · 92 km away
  10. 2.1Rat Islands, Aleutian Islands, Alaska · 1772 days ago · 41 km deep · 86 km away
  11. 1.8211 km W of Adak, Alaska · 1772 days ago · 72 km deep · 57 km away
  12. 2.2204 km WSW of Adak, Alaska · 1771 days ago · 44 km deep · 97 km away
  13. 2.2212 km WSW of Adak, Alaska · 1769 days ago · 69 km deep · 71 km away
  14. 1.9283 km W of Adak, Alaska · 1768 days ago · 62 km deep · 51 km away
  15. 3.2Rat Islands, Aleutian Islands, Alaska · 1767 days ago · 35 km deep · 91 km away
  16. 2.8Rat Islands, Aleutian Islands, Alaska · 1766 days ago · 126 km deep · 89 km away
  17. 1.8Rat Islands, Aleutian Islands, Alaska · 1766 days ago · 43 km deep · 83 km away
  18. 1.7263 km W of Adak, Alaska · 1766 days ago · 19 km deep · 52 km away
  19. 2.2253 km W of Adak, Alaska · 1764 days ago · 86 km deep · 27 km away
  20. 2.1212 km WSW of Adak, Alaska · 1764 days ago · 9 km deep · 94 km away
  21. 2.6188 km W of Adak, Alaska · 1762 days ago · 96 km deep · 73 km away
  22. 3.1271 km W of Adak, Alaska · 1762 days ago · 96 km deep · 35 km away
  23. 3.9Rat Islands, Aleutian Islands, Alaska · 1761 days ago · 57 km deep · 66 km away
  24. 2.1257 km WSW of Adak, Alaska · 1760 days ago · 66 km deep · 69 km away
  25. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1759 days ago · 13 km deep · 66 km away
  26. 3.3Rat Islands, Aleutian Islands, Alaska · 1757 days ago · 35 km deep · 92 km away
  27. 2.8192 km WSW of Adak, Alaska · 1756 days ago · 65 km deep · 84 km away
  28. 2.8239 km W of Adak, Alaska · 1755 days ago · 176 km deep · 12 km away
  29. 3.2290 km WSW of Adak, Alaska · 1753 days ago · 29 km deep · 95 km away
  30. 3.4Rat Islands, Aleutian Islands, Alaska · 1753 days ago · 9 km deep · 98 km away
  31. 2.9Rat Islands, Aleutian Islands, Alaska · 1753 days ago · 7 km deep · 96 km away
  32. 1.5Rat Islands, Aleutian Islands, Alaska · 1753 days ago · 7 km deep · 92 km away
  33. 2.1Rat Islands, Aleutian Islands, Alaska · 1753 days ago · 5 km deep · 92 km away
  34. 1.8Rat Islands, Aleutian Islands, Alaska · 1753 days ago · 6 km deep · 94 km away
  35. 4.3Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 10 km deep · 97 km away
  36. 2.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 10 km deep · 97 km away
  37. 3.2Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 10 km deep · 98 km away
  38. 1.6Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 8 km deep · 93 km away
  39. 1.6Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 6 km deep · 93 km away
  40. 2.5Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 5 km deep · 95 km away
  41. 2.3Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 6 km deep · 95 km away
  42. 2.4Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 2 km deep · 97 km away
  43. 2.6Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 14 km deep · 93 km away
  44. 1.8Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 5 km deep · 93 km away
  45. 3.3Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 11 km deep · 100 km away
  46. 1.8Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 5 km deep · 89 km away
  47. 3.0Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 3 km deep · 92 km away
  48. 2.6Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 6 km deep · 89 km away
  49. 1.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 6 km deep · 91 km away
  50. 4.2273 km WSW of Adak, Alaska · 1751 days ago · 25 km deep · 98 km away
  51. 1.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 4 km deep · 93 km away
  52. 1.6Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 4 km deep · 95 km away
  53. 1.8Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 8 km deep · 91 km away
  54. 1.7Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 7 km deep · 91 km away
  55. 3.1Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 111 km deep · 99 km away
  56. 1.7Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 6 km deep · 94 km away
  57. 3.0Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 10 km deep · 95 km away
  58. 2.6Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 6 km deep · 92 km away
  59. 4.2Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 10 km deep · 97 km away
  60. 2.6Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 7 km deep · 99 km away

The first 60 of 102.

Before

  1. 2.5241 km WSW of Adak, Alaska · 1783 days ago · 33 km deep · 83 km away
  2. 1.6249 km W of Adak, Alaska · 1783 days ago · -3 km deep · 3 km away
  3. 2.1Rat Islands, Aleutian Islands, Alaska · 1785 days ago · 97 km deep · 83 km away
  4. 1.9253 km W of Adak, Alaska · 1786 days ago · 74 km deep · 39 km away
  5. 2.7299 km W of Adak, Alaska · 1786 days ago · 80 km deep · 61 km away
  6. 1.7287 km WSW of Adak, Alaska · 1787 days ago · 33 km deep · 69 km away
  7. 2.8253 km WSW of Adak, Alaska · 1787 days ago · 70 km deep · 58 km away
  8. 3.0Rat Islands, Aleutian Islands, Alaska · 1787 days ago · 35 km deep · 91 km away
  9. 2.9238 km WSW of Adak, Alaska · 1788 days ago · 27 km deep · 91 km away
  10. 2.9226 km W of Adak, Alaska · 1790 days ago · 102 km deep · 36 km away
  11. 3.1246 km W of Adak, Alaska · 1790 days ago · 164 km deep · 11 km away
  12. 1.8278 km W of Adak, Alaska · 1791 days ago · 79 km deep · 34 km away
  13. 1.7Rat Islands, Aleutian Islands, Alaska · 1791 days ago · 92 km deep · 92 km away
  14. 1.8256 km W of Adak, Alaska · 1791 days ago · 92 km deep · 20 km away
  15. 1.9Rat Islands, Aleutian Islands, Alaska · 1791 days ago · 95 km deep · 79 km away
  16. 2.0211 km W of Adak, Alaska · 1791 days ago · 112 km deep · 46 km away
  17. 1.9Rat Islands, Aleutian Islands, Alaska · 1792 days ago · 37 km deep · 85 km away
  18. 1.9Rat Islands, Aleutian Islands, Alaska · 1792 days ago · 37 km deep · 85 km away
  19. 1.9223 km WSW of Adak, Alaska · 1792 days ago · 66 km deep · 61 km away
  20. 3.1225 km WSW of Adak, Alaska · 1793 days ago · 27 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91410441. Read Sat, Sep 26, 2026, 12:46 AM UTC.