Alaska earthquakes

M1.9 earthquake 64 km SSW of Adak, Alaska

A magnitude 1.9 earthquake struck 64 km SSW of Adak, Alaska on Sat, Feb 20, 2021, 10:33 PM HAST (08:33 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M2.1 111 km W of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.9 (ml), micro
Local time
UTC
2021-02-21 08:33:14 UTC
Depth
27.2 km (16.9 mi), shallow
Epicenter
51.346° N, 177.035° 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
22

Nearby

Within 100 km, magnitude 1.5 and up: 163 in the 60 days after this one and 36 in the 30 days before it.

After

  1. 2.1111 km W of Adak, Alaska · 2041 days ago · 80 km deep · 94 km away
  2. 2.781 km WSW of Adak, Alaska · 2041 days ago · 79 km deep · 61 km away
  3. 1.877 km ESE of Adak, Alaska · 2041 days ago · 27 km deep · 95 km away
  4. 1.874 km SE of Adak, Alaska · 2041 days ago · 18 km deep · 80 km away
  5. 2.772 km SSE of Adak, Alaska · 2040 days ago · 35 km deep · 67 km away
  6. 2.899 km WSW of Adak, Alaska · 2040 days ago · 34 km deep · 61 km away
  7. 2.872 km SE of Adak, Alaska · 2040 days ago · 31 km deep · 71 km away
  8. 1.961 km SE of Adak, Alaska · 2040 days ago · 23 km deep · 71 km away
  9. 1.9134 km SW of Adak, Alaska · 2039 days ago · 41 km deep · 83 km away
  10. 2.039 km W of Adak, Alaska · 2039 days ago · 98 km deep · 63 km away
  11. 1.835 km SSE of Adak, Alaska · 2039 days ago · 49 km deep · 42 km away
  12. 1.845 km SW of Adak, Alaska · 2039 days ago · 63 km deep · 26 km away
  13. 1.8139 km WSW of Adak, Alaska · 2039 days ago · 25 km deep · 96 km away
  14. 2.893 km WSW of Adak, Alaska · 2039 days ago · 35 km deep · 52 km away
  15. 1.876 km SSW of Adak, Alaska · 2038 days ago · 36 km deep · 13 km away
  16. 1.762 km SW of Adak, Alaska · 2038 days ago · 33 km deep · 26 km away
  17. 1.587 km W of Adak, Alaska · 2038 days ago · 5 km deep · 83 km away
  18. 3.161 km ESE of Adak, Alaska · 2037 days ago · 35 km deep · 84 km away
  19. 2.729 km N of Adak, Alaska · 2037 days ago · 142 km deep · 93 km away
  20. 1.936 km ESE of Adak, Alaska · 2036 days ago · 71 km deep · 79 km away
  21. 2.074 km WSW of Adak, Alaska · 2036 days ago · 66 km deep · 49 km away
  22. 1.763 km SSW of Adak, Alaska · 2035 days ago · 27 km deep · 4 km away
  23. 2.067 km SE of Adak, Alaska · 2035 days ago · 26 km deep · 75 km away
  24. 1.761 km SE of Adak, Alaska · 2035 days ago · 13 km deep · 67 km away
  25. 1.754 km S of Adak, Alaska · 2035 days ago · 22 km deep · 36 km away
  26. 1.546 km SSE of Adak, Alaska · 2034 days ago · 28 km deep · 51 km away
  27. 2.0116 km WSW of Adak, Alaska · 2034 days ago · 85 km deep · 93 km away
  28. 2.986 km SE of Adak, Alaska · 2032 days ago · 35 km deep · 97 km away
  29. 1.758 km SE of Adak, Alaska · 2031 days ago · 32 km deep · 76 km away
  30. 2.655 km SSW of Adak, Alaska · 2030 days ago · 35 km deep · 10 km away
  31. 3.549 km SSW of Adak, Alaska · 2030 days ago · 38 km deep · 16 km away
  32. 1.952 km SSW of Adak, Alaska · 2029 days ago · 37 km deep · 13 km away
  33. 3.522 km NNW of Adak, Alaska · 2028 days ago · 153 km deep · 81 km away
  34. 1.682 km SE of Adak, Alaska · 2028 days ago · 25 km deep · 95 km away
  35. 1.9Andreanof Islands, Aleutian Islands, Alaska · 2027 days ago · 20 km deep · 91 km away
  36. 2.8113 km WSW of Adak, Alaska · 2027 days ago · 17 km deep · 75 km away
  37. 1.7Andreanof Islands, Aleutian Islands, Alaska · 2026 days ago · 23 km deep · 64 km away
  38. 1.762 km SE of Adak, Alaska · 2026 days ago · 21 km deep · 65 km away
  39. 3.1123 km WSW of Adak, Alaska · 2025 days ago · 30 km deep · 77 km away
  40. 1.8122 km WSW of Adak, Alaska · 2025 days ago · 13 km deep · 94 km away
  41. 1.972 km ESE of Adak, Alaska · 2025 days ago · 51 km deep · 91 km away
  42. 1.9148 km SW of Adak, Alaska · 2025 days ago · 21 km deep · 100 km away
  43. 1.9130 km WSW of Adak, Alaska · 2025 days ago · 45 km deep · 87 km away
  44. 1.5127 km WSW of Adak, Alaska · 2024 days ago · 18 km deep · 87 km away
  45. 2.867 km SE of Adak, Alaska · 2024 days ago · 30 km deep · 71 km away
  46. 1.556 km E of Adak, Alaska · 2024 days ago · 47 km deep · 96 km away
  47. 1.584 km W of Adak, Alaska · 2024 days ago · 8 km deep · 82 km away
  48. 1.6103 km WSW of Adak, Alaska · 2024 days ago · 5 km deep · 73 km away
  49. 1.8133 km WSW of Adak, Alaska · 2024 days ago · 36 km deep · 93 km away
  50. 1.845 km E of Adak, Alaska · 2023 days ago · 97 km deep · 97 km away
  51. 2.00 km E of Adak, Alaska · 2022 days ago · 98 km deep · 65 km away
  52. 1.853 km SSW of Adak, Alaska · 2022 days ago · 24 km deep · 13 km away
  53. 2.893 km SW of Adak, Alaska · 2021 days ago · 39 km deep · 43 km away
  54. 1.7111 km WSW of Adak, Alaska · 2021 days ago · 13 km deep · 82 km away
  55. 2.074 km SSW of Adak, Alaska · 2021 days ago · 51 km deep · 11 km away
  56. 1.551 km SE of Adak, Alaska · 2021 days ago · 25 km deep · 61 km away
  57. 1.871 km WSW of Adak, Alaska · 2020 days ago · 68 km deep · 60 km away
  58. 3.0148 km SW of Adak, Alaska · 2019 days ago · 10 km deep · 95 km away
  59. 2.567 km SSW of Adak, Alaska · 2019 days ago · 35 km deep · 9 km away
  60. 1.633 km W of Adak, Alaska · 2018 days ago · 10 km deep · 59 km away

The first 60 of 163.

Before

  1. 1.9117 km WSW of Adak, Alaska · 2041 days ago · 27 km deep · 81 km away
  2. 2.4109 km W of Adak, Alaska · 2042 days ago · 188 km deep · 89 km away
  3. 1.856 km SW of Adak, Alaska · 2042 days ago · 30 km deep · 27 km away
  4. 1.864 km SSE of Adak, Alaska · 2042 days ago · 22 km deep · 51 km away
  5. 1.519 km SW of Adak, Alaska · 2042 days ago · 73 km deep · 46 km away
  6. 3.6136 km WSW of Adak, Alaska · 2043 days ago · 19 km deep · 94 km away
  7. 4.171 km SSW of Adak, Alaska · 2043 days ago · 35 km deep · 16 km away · felt by 1
  8. 3.075 km SSE of Adak, Alaska · 2043 days ago · 35 km deep · 69 km away
  9. 2.260 km W of Adak, Alaska · 2043 days ago · 103 km deep · 76 km away
  10. 2.059 km SE of Adak, Alaska · 2043 days ago · 41 km deep · 66 km away
  11. 2.748 km WSW of Adak, Alaska · 2044 days ago · 81 km deep · 45 km away
  12. 2.5122 km WSW of Adak, Alaska · 2044 days ago · 75 km deep · 92 km away
  13. 1.766 km SSE of Adak, Alaska · 2045 days ago · 14 km deep · 45 km away
  14. 1.9126 km WSW of Adak, Alaska · 2045 days ago · 26 km deep · 83 km away
  15. 1.681 km W of Adak, Alaska · 2045 days ago · 4 km deep · 79 km away
  16. 1.856 km SW of Adak, Alaska · 2045 days ago · 57 km deep · 30 km away
  17. 1.945 km SSE of Adak, Alaska · 2045 days ago · 48 km deep · 44 km away
  18. 2.0135 km WSW of Adak, Alaska · 2046 days ago · 24 km deep · 90 km away
  19. 2.678 km SW of Adak, Alaska · 2046 days ago · 41 km deep · 35 km away
  20. 3.9139 km WSW of Adak, Alaska · 2046 days ago · 35 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0212e4wm8r. Read Thu, Sep 24, 2026, 9:52 AM UTC.