Alaska earthquakes

M1.7 earthquake 262 km W of Adak, Alaska

A magnitude 1.7 earthquake struck 262 km W of Adak, Alaska on Tue, Dec 14, 2021, 10:19 AM GMT+12 (22:19 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M5.0 242 km WSW of Adak, Alaska. This one was a foreshock.

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Map

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
2021-12-13 22:19:15 UTC
Depth
8.9 km (5.6 mi), shallow
Epicenter
51.921° N, 179.554° 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 0.7 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
151°
Stations used
6

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 98 in the 30 days before it.

After

  1. 2.2Rat Islands, Aleutian Islands, Alaska · 1747 days ago · 5 km deep · 81 km away
  2. 3.2Rat Islands, Aleutian Islands, Alaska · 1747 days ago · 101 km deep · 78 km away
  3. 4.3Rat Islands, Aleutian Islands, Alaska · 1746 days ago · 132 km deep · 87 km away
  4. 1.9Rat Islands, Aleutian Islands, Alaska · 1745 days ago · 6 km deep · 87 km away
  5. 1.5Rat Islands, Aleutian Islands, Alaska · 1745 days ago · 7 km deep · 84 km away
  6. 2.2Rat Islands, Aleutian Islands, Alaska · 1744 days ago · 11 km deep · 89 km away
  7. 2.1Rat Islands, Aleutian Islands, Alaska · 1744 days ago · 6 km deep · 96 km away
  8. 2.0Rat Islands, Aleutian Islands, Alaska · 1743 days ago · 61 km deep · 65 km away
  9. 3.9298 km W of Adak, Alaska · 1743 days ago · 132 km deep · 37 km away
  10. 3.3Rat Islands, Aleutian Islands, Alaska · 1743 days ago · 41 km deep · 79 km away
  11. 1.6Rat Islands, Aleutian Islands, Alaska · 1742 days ago · 5 km deep · 83 km away
  12. 1.6Rat Islands, Aleutian Islands, Alaska · 1742 days ago · 5 km deep · 83 km away
  13. 2.5273 km WSW of Adak, Alaska · 1741 days ago · 10 km deep · 94 km away
  14. 1.8167 km W of Adak, Alaska · 1741 days ago · 11 km deep · 96 km away
  15. 2.6Rat Islands, Aleutian Islands, Alaska · 1741 days ago · 125 km deep · 89 km away
  16. 2.8196 km W of Adak, Alaska · 1741 days ago · 121 km deep · 66 km away
  17. 3.4237 km W of Adak, Alaska · 1740 days ago · 28 km deep · 35 km away
  18. 2.3202 km WSW of Adak, Alaska · 1740 days ago · 14 km deep · 100 km away
  19. 3.1216 km W of Adak, Alaska · 1735 days ago · 124 km deep · 48 km away
  20. 3.0Rat Islands, Aleutian Islands, Alaska · 1734 days ago · 82 km deep · 77 km away
  21. 2.7227 km WSW of Adak, Alaska · 1734 days ago · 13 km deep · 80 km away
  22. 2.9210 km W of Adak, Alaska · 1728 days ago · 10 km deep · 65 km away
  23. 2.5Rat Islands, Aleutian Islands, Alaska · 1721 days ago · 92 km deep · 78 km away
  24. 3.0217 km W of Adak, Alaska · 1721 days ago · 87 km deep · 49 km away
  25. 5.0242 km WSW of Adak, Alaska · 1717 days ago · 38 km deep · 94 km away · tsunami flag
  26. 2.1238 km WSW of Adak, Alaska · 1717 days ago · 15 km deep · 91 km away
  27. 2.0241 km WSW of Adak, Alaska · 1717 days ago · 26 km deep · 90 km away
  28. 2.8Andreanof Isl., Aleutian Islands, Alaska · 1717 days ago · 10 km deep · 88 km away
  29. 2.1239 km WSW of Adak, Alaska · 1717 days ago · 26 km deep · 92 km away
  30. 1.7181 km W of Adak, Alaska · 1716 days ago · 8 km deep · 87 km away
  31. 2.7Rat Islands, Aleutian Islands, Alaska · 1713 days ago · 49 km deep · 95 km away
  32. 2.9180 km W of Adak, Alaska · 1713 days ago · 18 km deep · 91 km away
  33. 2.2225 km WSW of Adak, Alaska · 1713 days ago · 19 km deep · 89 km away
  34. 2.0203 km WSW of Adak, Alaska · 1712 days ago · 63 km deep · 82 km away
  35. 2.8200 km W of Adak, Alaska · 1712 days ago · 94 km deep · 71 km away
  36. 2.8210 km W of Adak, Alaska · 1711 days ago · 17 km deep · 65 km away
  37. 2.7257 km WSW of Adak, Alaska · 1711 days ago · 46 km deep · 67 km away
  38. 2.5180 km W of Adak, Alaska · 1711 days ago · 10 km deep · 90 km away
  39. 3.1Rat Islands, Aleutian Islands, Alaska · 1710 days ago · 130 km deep · 41 km away
  40. 3.5246 km WSW of Adak, Alaska · 1710 days ago · 58 km deep · 65 km away
  41. 3.6Rat Islands, Aleutian Islands, Alaska · 1710 days ago · 52 km deep · 90 km away
  42. 2.0Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 9 km deep · 83 km away
  43. 4.2Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 7 km deep · 85 km away
  44. 3.4Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 8 km deep · 85 km away
  45. 3.4Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 11 km deep · 86 km away
  46. 3.5Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 6 km deep · 88 km away
  47. 3.0Rat Islands, Aleutian Islands, Alaska · 1709 days ago · 11 km deep · 84 km away
  48. 2.1Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 4 km deep · 78 km away
  49. 1.6Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 4 km deep · 77 km away
  50. 4.0Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 8 km deep · 87 km away
  51. 2.8Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 40 km deep · 78 km away
  52. 1.9Rat Islands, Aleutian Islands, Alaska · 1708 days ago · -3 km deep · 78 km away
  53. 1.7Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 2 km deep · 88 km away
  54. 1.6Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 6 km deep · 80 km away
  55. 1.6Rat Islands, Aleutian Islands, Alaska · 1708 days ago · 7 km deep · 79 km away
  56. 2.0264 km W of Adak, Alaska · 1707 days ago · 63 km deep · 40 km away
  57. 2.1244 km WSW of Adak, Alaska · 1707 days ago · 63 km deep · 53 km away
  58. 3.0237 km WSW of Adak, Alaska · 1706 days ago · 23 km deep · 91 km away
  59. 2.5Rat Islands, Aleutian Islands, Alaska · 1706 days ago · 93 km deep · 67 km away
  60. 2.1187 km W of Adak, Alaska · 1706 days ago · 103 km deep · 76 km away

The first 60 of at least 199.

Before

  1. 1.6Rat Islands, Aleutian Islands, Alaska · 1748 days ago · 9 km deep · 82 km away
  2. 2.0Rat Islands, Aleutian Islands, Alaska · 1748 days ago · 5 km deep · 81 km away
  3. 2.1Rat Islands, Aleutian Islands, Alaska · 1748 days ago · 47 km deep · 78 km away
  4. 1.9Rat Islands, Aleutian Islands, Alaska · 1749 days ago · 4 km deep · 81 km away
  5. 2.7230 km W of Adak, Alaska · 1749 days ago · 99 km deep · 38 km away
  6. 1.6Rat Islands, Aleutian Islands, Alaska · 1749 days ago · 5 km deep · 81 km away
  7. 3.1Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 10 km deep · 91 km away
  8. 2.2Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 7 km deep · 89 km away
  9. 1.8299 km W of Adak, Alaska · 1750 days ago · 60 km deep · 54 km away
  10. 2.0Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 5 km deep · 82 km away
  11. 2.1Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 6 km deep · 82 km away
  12. 2.4Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 8 km deep · 80 km away
  13. 1.6Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 6 km deep · 83 km away
  14. 3.1Rat Islands, Aleutian Islands, Alaska · 1750 days ago · 10 km deep · 82 km away
  15. 2.0Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 5 km deep · 89 km away
  16. 1.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 4 km deep · 81 km away
  17. 3.0Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 7 km deep · 92 km away
  18. 4.1Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 10 km deep · 88 km away
  19. 2.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 10 km deep · 94 km away
  20. 1.9Rat Islands, Aleutian Islands, Alaska · 1751 days ago · 4 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av91443981. Read Sat, Sep 26, 2026, 11:15 AM UTC.