Alaska earthquakes

M1.8 earthquake 91 km SSW of Unalaska, Alaska

A magnitude 1.8 earthquake struck 91 km SSW of Unalaska, Alaska on Sun, Feb 21, 2016, 1:07 PM AKST (22:07 UTC), 33 km (20 mi) below the surface.

A larger quake followed: M4.1 Fox Islands, Aleutian Islands, 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
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2016-02-21 22:07:15 UTC
Depth
32.5 km (20.2 mi), shallow
Epicenter
53.128° N, 167.113° 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
13

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 91 in the 60 days after this one and 36 in the 30 days before it.

After

  1. 2.871 km S of Unalaska, Alaska · 3875 days ago · 35 km deep · 44 km away
  2. 2.079 km SSW of Unalaska, Alaska · 3873 days ago · 34 km deep · 22 km away
  3. 1.786 km SSE of Unalaska, Alaska · 3873 days ago · 17 km deep · 76 km away
  4. 1.569 km SSE of Unalaska, Alaska · 3873 days ago · 22 km deep · 73 km away
  5. 1.877 km S of Unalaska, Alaska · 3872 days ago · 36 km deep · 26 km away
  6. 1.972 km E of Nikolski, Alaska · 3872 days ago · 48 km deep · 49 km away
  7. 1.772 km ESE of Nikolski, Alaska · 3872 days ago · 26 km deep · 58 km away
  8. 2.144 km ESE of Nikolski, Alaska · 3872 days ago · 42 km deep · 82 km away
  9. 4.1Fox Islands, Aleutian Islands, Alaska · 3871 days ago · 25 km deep · 20 km away
  10. 1.525 km WSW of Dutch Harbor, Alaska · 3871 days ago · 27 km deep · 78 km away
  11. 2.093 km E of Nikolski, Alaska · 3871 days ago · 49 km deep · 28 km away
  12. 2.579 km S of Unalaska, Alaska · 3871 days ago · 33 km deep · 24 km away
  13. 1.942 km SSW of Unalaska, Alaska · 3870 days ago · 90 km deep · 49 km away
  14. 2.4140 km ESE of Nikolski, Alaska · 3870 days ago · 13 km deep · 64 km away
  15. 2.890 km E of Nikolski, Alaska · 3870 days ago · 49 km deep · 36 km away
  16. 2.669 km SE of Unalaska, Alaska · 3868 days ago · 36 km deep · 86 km away
  17. 1.9106 km E of Nikolski, Alaska · 3868 days ago · 25 km deep · 31 km away
  18. 1.998 km E of Nikolski, Alaska · 3868 days ago · 42 km deep · 41 km away
  19. 2.145 km NE of Nikolski, Alaska · 3867 days ago · 86 km deep · 88 km away
  20. 1.978 km SW of Unalaska, Alaska · 3867 days ago · 31 km deep · 34 km away
  21. 2.8Fox Islands, Aleutian Islands, Alaska · 3866 days ago · 11 km deep · 36 km away
  22. 2.485 km SE of Unalaska, Alaska · 3866 days ago · 26 km deep · 90 km away
  23. 1.890 km WSW of Unalaska, Alaska · 3865 days ago · 55 km deep · 61 km away
  24. 2.5146 km ESE of Nikolski, Alaska · 3865 days ago · 24 km deep · 70 km away
  25. 3.568 km NE of Nikolski, Alaska · 3864 days ago · 70 km deep · 63 km away
  26. 1.880 km SSE of Unalaska, Alaska · 3864 days ago · 18 km deep · 75 km away
  27. 2.655 km SSW of Unalaska, Alaska · 3864 days ago · 94 km deep · 38 km away
  28. 1.892 km NE of Nikolski, Alaska · 3863 days ago · 9 km deep · 52 km away
  29. 3.332 km SW of Unalaska, Alaska · 3863 days ago · 92 km deep · 64 km away
  30. 1.721 km SSW of Unalaska, Alaska · 3863 days ago · 86 km deep · 70 km away
  31. 2.643 km ESE of Nikolski, Alaska · 3863 days ago · 42 km deep · 92 km away
  32. 1.887 km E of Nikolski, Alaska · 3862 days ago · 38 km deep · 37 km away
  33. 1.692 km SE of Unalaska, Alaska · 3862 days ago · 19 km deep · 93 km away
  34. 1.836 km S of Unalaska, Alaska · 3861 days ago · 69 km deep · 61 km away
  35. 2.096 km E of Nikolski, Alaska · 3861 days ago · 39 km deep · 24 km away
  36. 2.1102 km SSE of Unalaska, Alaska · 3859 days ago · 22 km deep · 77 km away
  37. 2.380 km SSE of Unalaska, Alaska · 3859 days ago · 5 km deep · 74 km away
  38. 2.760 km SE of Unalaska, Alaska · 3859 days ago · 24 km deep · 90 km away
  39. 2.157 km SSW of Unalaska, Alaska · 3859 days ago · 90 km deep · 34 km away
  40. 2.5106 km E of Nikolski, Alaska · 3858 days ago · 26 km deep · 35 km away
  41. 2.364 km ESE of Nikolski, Alaska · 3858 days ago · 32 km deep · 70 km away
  42. 2.727 km ENE of Nikolski, Alaska · 3856 days ago · 72 km deep · 92 km away
  43. 1.667 km SSW of Unalaska, Alaska · 3854 days ago · 26 km deep · 25 km away
  44. 2.063 km SW of Unalaska, Alaska · 3854 days ago · 78 km deep · 43 km away
  45. 2.5100 km ESE of Nikolski, Alaska · 3853 days ago · 41 km deep · 77 km away
  46. 3.952 km ESE of Nikolski, Alaska · 3851 days ago · 26 km deep · 79 km away
  47. 1.887 km SSW of Unalaska, Alaska · 3851 days ago · 18 km deep · 8 km away
  48. 2.643 km ESE of Nikolski, Alaska · 3850 days ago · 39 km deep · 91 km away
  49. 2.630 km ESE of Nikolski, Alaska · 3850 days ago · 45 km deep · 91 km away
  50. 2.868 km E of Nikolski, Alaska · 3850 days ago · 46 km deep · 51 km away
  51. 1.989 km E of Nikolski, Alaska · 3849 days ago · 32 km deep · 34 km away
  52. 1.537 km SE of Unalaska, Alaska · 3849 days ago · 25 km deep · 92 km away
  53. 3.831 km NE of Nikolski, Alaska · 3848 days ago · 106 km deep · 95 km away
  54. 1.974 km SSW of Unalaska, Alaska · 3848 days ago · 28 km deep · 18 km away
  55. 2.444 km SE of Nikolski, Alaska · 3847 days ago · 45 km deep · 97 km away
  56. 1.592 km SE of Unalaska, Alaska · 3845 days ago · 26 km deep · 99 km away
  57. 1.515 km SW of Unalaska, Alaska · 3845 days ago · 92 km deep · 76 km away
  58. 1.697 km SSW of Unalaska, Alaska · 3845 days ago · 25 km deep · 19 km away
  59. 2.355 km SE of Unalaska, Alaska · 3845 days ago · 40 km deep · 91 km away
  60. 2.456 km S of Unalaska, Alaska · 3844 days ago · 16 km deep · 46 km away

The first 60 of 91.

Before

  1. 1.522 km W of Dutch Harbor, Alaska · 3878 days ago · 5 km deep · 83 km away
  2. 2.4110 km S of Unalaska, Alaska · 3879 days ago · 11 km deep · 35 km away
  3. 1.643 km SW of Unalaska, Alaska · 3879 days ago · 5 km deep · 51 km away
  4. 2.123 km SSE of Unalaska, Alaska · 3880 days ago · 75 km deep · 78 km away
  5. 1.536 km S of Unalaska, Alaska · 3883 days ago · 67 km deep · 60 km away
  6. 1.887 km ESE of Nikolski, Alaska · 3884 days ago · 49 km deep · 50 km away
  7. 2.777 km SSW of Unalaska, Alaska · 3884 days ago · 26 km deep · 21 km away · felt by 1
  8. 3.672 km SSW of Unalaska, Alaska · 3884 days ago · 46 km deep · 21 km away
  9. 2.0121 km S of Unalaska, Alaska · 3885 days ago · 8 km deep · 43 km away
  10. 2.2135 km S of Unalaska, Alaska · 3885 days ago · 25 km deep · 74 km away
  11. 2.843 km SSW of Unalaska, Alaska · 3887 days ago · 73 km deep · 49 km away
  12. 1.850 km SSE of Unalaska, Alaska · 3888 days ago · 45 km deep · 77 km away
  13. 2.180 km SE of Unalaska, Alaska · 3890 days ago · 42 km deep · 86 km away
  14. 1.661 km S of Unalaska, Alaska · 3890 days ago · 27 km deep · 36 km away
  15. 1.877 km WSW of Unalaska, Alaska · 3890 days ago · 27 km deep · 69 km away
  16. 1.867 km SW of Unalaska, Alaska · 3892 days ago · 9 km deep · 36 km away
  17. 1.653 km SW of Unalaska, Alaska · 3893 days ago · 13 km deep · 51 km away
  18. 1.970 km SE of Unalaska, Alaska · 3893 days ago · 36 km deep · 82 km away
  19. 1.657 km SW of Unalaska, Alaska · 3893 days ago · 13 km deep · 52 km away
  20. 2.884 km E of Nikolski, Alaska · 3893 days ago · 76 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0162ed3478 (also filed as ak12906239). Read Sun, Oct 4, 2026, 4:09 PM UTC.