Alaska earthquakes

M1.5 earthquake 77 km W of Adak, Alaska

A magnitude 1.5 earthquake struck 77 km W of Adak, Alaska on Thu, Feb 20, 2020, 6:53 AM HAST (16:53 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M5.0 71 km WNW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2020-02-20 16:53:24 UTC
Depth
6.5 km (4.0 mi), shallow
Epicenter
51.847° N, 177.752° 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
19

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 2.679 km W of Adak, Alaska · 2414 days ago · 14 km deep · 7 km away
  2. 2.364 km WSW of Adak, Alaska · 2414 days ago · 68 km deep · 31 km away
  3. 2.055 km WSW of Adak, Alaska · 2413 days ago · 95 km deep · 30 km away
  4. 1.9150 km WSW of Adak, Alaska · 2413 days ago · 17 km deep · 79 km away
  5. 1.684 km W of Adak, Alaska · 2413 days ago · 15 km deep · 7 km away
  6. 1.579 km W of Adak, Alaska · 2413 days ago · 9 km deep · 3 km away
  7. 1.6129 km W of Adak, Alaska · 2413 days ago · 7 km deep · 54 km away
  8. 1.7143 km WSW of Adak, Alaska · 2412 days ago · 23 km deep · 82 km away
  9. 1.8113 km WSW of Adak, Alaska · 2412 days ago · 9 km deep · 48 km away
  10. 2.0124 km WSW of Adak, Alaska · 2412 days ago · 14 km deep · 62 km away
  11. 1.585 km W of Adak, Alaska · 2412 days ago · 11 km deep · 9 km away
  12. 1.637 km S of Adak, Alaska · 2412 days ago · 52 km deep · 90 km away
  13. 1.580 km W of Adak, Alaska · 2412 days ago · 10 km deep · 3 km away
  14. 1.988 km W of Adak, Alaska · 2412 days ago · 5 km deep · 12 km away
  15. 1.683 km W of Adak, Alaska · 2412 days ago · 7 km deep · 7 km away
  16. 1.680 km W of Adak, Alaska · 2412 days ago · 11 km deep · 4 km away
  17. 1.898 km WSW of Adak, Alaska · 2412 days ago · 26 km deep · 49 km away
  18. 1.880 km W of Adak, Alaska · 2412 days ago · 11 km deep · 3 km away
  19. 2.282 km W of Adak, Alaska · 2411 days ago · 8 km deep · 6 km away
  20. 2.1118 km WSW of Adak, Alaska · 2411 days ago · 58 km deep · 53 km away
  21. 1.867 km WSW of Adak, Alaska · 2410 days ago · 68 km deep · 20 km away
  22. 3.4137 km WSW of Adak, Alaska · 2410 days ago · 34 km deep · 78 km away
  23. 3.725 km WNW of Adak, Alaska · 2410 days ago · 103 km deep · 56 km away
  24. 1.948 km SSE of Adak, Alaska · 2409 days ago · 43 km deep · 99 km away
  25. 1.789 km WSW of Adak, Alaska · 2409 days ago · 25 km deep · 38 km away
  26. 3.362 km SSW of Adak, Alaska · 2409 days ago · 10 km deep · 71 km away
  27. 2.0154 km WSW of Adak, Alaska · 2409 days ago · 25 km deep · 95 km away
  28. 2.657 km SSW of Adak, Alaska · 2409 days ago · 35 km deep · 67 km away
  29. 1.6Andreanof Islands, Aleutian Islands, Alaska · 2409 days ago · 10 km deep · 12 km away
  30. 2.284 km W of Adak, Alaska · 2409 days ago · 6 km deep · 7 km away
  31. 1.777 km W of Adak, Alaska · 2409 days ago · 7 km deep · 1 km away
  32. 1.678 km W of Adak, Alaska · 2408 days ago · 7 km deep · 1 km away
  33. 1.780 km W of Adak, Alaska · 2408 days ago · 6 km deep · 3 km away
  34. 1.983 km W of Adak, Alaska · 2408 days ago · 9 km deep · 6 km away
  35. 1.659 km SSW of Adak, Alaska · 2408 days ago · 32 km deep · 77 km away
  36. 1.9130 km SW of Adak, Alaska · 2407 days ago · 22 km deep · 78 km away
  37. 1.662 km SW of Adak, Alaska · 2407 days ago · 39 km deep · 43 km away
  38. 1.6107 km WSW of Adak, Alaska · 2406 days ago · 27 km deep · 46 km away
  39. 3.688 km W of Adak, Alaska · 2406 days ago · 11 km deep · 13 km away
  40. 1.889 km W of Adak, Alaska · 2406 days ago · 5 km deep · 12 km away
  41. 1.638 km SSW of Adak, Alaska · 2406 days ago · 13 km deep · 66 km away
  42. 1.680 km W of Adak, Alaska · 2405 days ago · 7 km deep · 4 km away
  43. 1.788 km W of Adak, Alaska · 2405 days ago · 4 km deep · 11 km away
  44. 4.051 km WSW of Adak, Alaska · 2403 days ago · 75 km deep · 38 km away
  45. 4.031 km SSE of Adak, Alaska · 2403 days ago · 48 km deep · 95 km away
  46. 1.887 km W of Adak, Alaska · 2403 days ago · 3 km deep · 11 km away
  47. 2.1129 km WSW of Adak, Alaska · 2402 days ago · 66 km deep · 58 km away
  48. 1.787 km W of Adak, Alaska · 2402 days ago · 5 km deep · 11 km away
  49. 1.782 km W of Adak, Alaska · 2402 days ago · 7 km deep · 5 km away
  50. 3.466 km SSW of Adak, Alaska · 2401 days ago · 35 km deep · 66 km away
  51. 1.9129 km WSW of Adak, Alaska · 2401 days ago · 71 km deep · 59 km away
  52. 1.565 km SSW of Adak, Alaska · 2401 days ago · 26 km deep · 79 km away
  53. 1.777 km W of Adak, Alaska · 2401 days ago · 11 km deep · 3 km away
  54. 1.980 km W of Adak, Alaska · 2401 days ago · 10 km deep · 4 km away
  55. 2.6132 km SW of Adak, Alaska · 2401 days ago · 32 km deep · 84 km away
  56. 2.2125 km SW of Adak, Alaska · 2401 days ago · 26 km deep · 73 km away
  57. 1.8129 km SW of Adak, Alaska · 2401 days ago · 20 km deep · 79 km away
  58. 2.1133 km WSW of Adak, Alaska · 2401 days ago · 7 km deep · 58 km away
  59. 1.8109 km SW of Adak, Alaska · 2401 days ago · 28 km deep · 72 km away
  60. 1.8119 km SW of Adak, Alaska · 2401 days ago · 18 km deep · 73 km away

The first 60 of at least 199.

Before

  1. 1.782 km W of Adak, Alaska · 2414 days ago · 4 km deep · 5 km away
  2. 2.0131 km WSW of Adak, Alaska · 2414 days ago · 24 km deep · 74 km away
  3. 1.778 km W of Adak, Alaska · 2414 days ago · 7 km deep · 1 km away
  4. 1.9132 km WSW of Adak, Alaska · 2415 days ago · 7 km deep · 58 km away
  5. 1.988 km W of Adak, Alaska · 2415 days ago · 3 km deep · 11 km away
  6. 1.984 km W of Adak, Alaska · 2415 days ago · 10 km deep · 7 km away
  7. 2.686 km WSW of Adak, Alaska · 2415 days ago · 70 km deep · 29 km away
  8. 1.982 km W of Adak, Alaska · 2415 days ago · 8 km deep · 6 km away
  9. 1.5123 km W of Adak, Alaska · 2415 days ago · 5 km deep · 47 km away
  10. 1.677 km W of Adak, Alaska · 2416 days ago · 6 km deep · 1 km away
  11. 2.284 km W of Adak, Alaska · 2416 days ago · 5 km deep · 7 km away
  12. 3.163 km SSW of Adak, Alaska · 2416 days ago · 35 km deep · 85 km away
  13. 1.881 km W of Adak, Alaska · 2416 days ago · 8 km deep · 5 km away
  14. 1.983 km W of Adak, Alaska · 2416 days ago · 7 km deep · 6 km away
  15. 2.082 km W of Adak, Alaska · 2416 days ago · 9 km deep · 5 km away
  16. 1.7Andreanof Islands, Aleutian Islands, Alaska · 2416 days ago · 6 km deep · 2 km away
  17. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2416 days ago · 26 km deep · 76 km away
  18. 2.0132 km SW of Adak, Alaska · 2416 days ago · 22 km deep · 81 km away
  19. 1.879 km W of Adak, Alaska · 2417 days ago · 5 km deep · 3 km away
  20. 1.979 km W of Adak, Alaska · 2417 days ago · 9 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0202cm91su. Read Wed, Sep 30, 2026, 11:32 AM UTC.