Alaska earthquakes

M2.9 earthquake 91 km SE of Adak, Alaska

A magnitude 2.9 earthquake struck 91 km SE of Adak, Alaska on Fri, Aug 19, 2016, 5:25 AM HADT (14:25 UTC), 38 km (24 mi) below the surface.

A larger quake followed: M3.9 81 km S of Atka, 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-08-19 14:25:29 UTC
Depth
38.0 km (23.6 mi), shallow
Epicenter
51.352° N, 175.621° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · 24 stations
2.9ML, local (Richter)Alaska Earthquake CenterPreliminary

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 5.4 km horizontally, 72.8 km in depth
Depth from
From location
Station coverage gap
206°, poorly surrounded by stations
Stations used
27

Nearby

Within 100 km, magnitude 1.5 and up: 77 in the 60 days after this one and 56 in the 30 days before it.

After

  1. 1.640 km ESE of Adak, Alaska · 3697 days ago · 61 km deep · 58 km away
  2. 1.8107 km SW of Atka, Alaska · 3696 days ago · 48 km deep · 30 km away
  3. 2.536 km NE of Adak, Alaska · 3696 days ago · 144 km deep · 89 km away
  4. 1.742 km SSE of Adak, Alaska · 3695 days ago · 37 km deep · 55 km away
  5. 1.624 km SSW of Adak, Alaska · 3694 days ago · 21 km deep · 91 km away
  6. 1.866 km SW of Atka, Alaska · 3694 days ago · 13 km deep · 70 km away
  7. 2.061 km SSW of Atka, Alaska · 3694 days ago · 16 km deep · 80 km away
  8. 1.747 km SSW of Adak, Alaska · 3693 days ago · 36 km deep · 96 km away
  9. 2.366 km SW of Atka, Alaska · 3692 days ago · 47 km deep · 70 km away
  10. 1.635 km S of Adak, Alaska · 3691 days ago · 38 km deep · 73 km away
  11. 2.281 km E of Adak, Alaska · 3690 days ago · 56 km deep · 50 km away
  12. 2.046 km NE of Adak, Alaska · 3690 days ago · 137 km deep · 98 km away
  13. 3.040 km SSW of Adak, Alaska · 3689 days ago · 47 km deep · 83 km away
  14. 1.760 km SSW of Atka, Alaska · 3689 days ago · 26 km deep · 82 km away
  15. 1.689 km SW of Atka, Alaska · 3688 days ago · 25 km deep · 46 km away
  16. 1.736 km SSE of Adak, Alaska · 3688 days ago · 42 km deep · 61 km away
  17. 2.054 km SSE of Adak, Alaska · 3687 days ago · 21 km deep · 56 km away
  18. 2.013 km ENE of Adak, Alaska · 3686 days ago · 99 km deep · 88 km away
  19. 2.439 km SSE of Adak, Alaska · 3685 days ago · 32 km deep · 58 km away
  20. 2.448 km SW of Atka, Alaska · 3684 days ago · 43 km deep · 87 km away
  21. 2.139 km WSW of Atka, Alaska · 3684 days ago · 72 km deep · 97 km away
  22. 1.865 km SE of Adak, Alaska · 3683 days ago · 30 km deep · 27 km away
  23. 3.188 km SE of Adak, Alaska · 3683 days ago · 31 km deep · 10 km away
  24. 1.752 km SSE of Adak, Alaska · 3682 days ago · 24 km deep · 49 km away
  25. 2.067 km S of Atka, Alaska · 3681 days ago · 21 km deep · 97 km away
  26. 1.623 km SSE of Adak, Alaska · 3677 days ago · 62 km deep · 73 km away
  27. 1.860 km SE of Adak, Alaska · 3677 days ago · 3 km deep · 36 km away
  28. 2.052 km SSE of Adak, Alaska · 3677 days ago · 26 km deep · 45 km away
  29. 2.198 km SE of Adak, Alaska · 3677 days ago · 49 km deep · 10 km away
  30. 2.453 km SE of Adak, Alaska · 3676 days ago · 45 km deep · 38 km away
  31. 2.432 km SSW of Adak, Alaska · 3675 days ago · 52 km deep · 93 km away
  32. 2.190 km S of Atka, Alaska · 3673 days ago · 4 km deep · 85 km away
  33. 2.491 km S of Atka, Alaska · 3673 days ago · 7 km deep · 87 km away
  34. 1.720 km SW of Adak, Alaska · 3673 days ago · 66 km deep · 95 km away
  35. 2.081 km SSW of Atka, Alaska · 3673 days ago · 3 km deep · 82 km away
  36. 1.653 km SE of Adak, Alaska · 3673 days ago · 2 km deep · 39 km away
  37. 1.760 km SSE of Adak, Alaska · 3671 days ago · 16 km deep · 39 km away
  38. 2.971 km WSW of Atka, Alaska · 3671 days ago · 71 km deep · 83 km away
  39. 2.390 km S of Atka, Alaska · 3670 days ago · 63 km deep · 93 km away
  40. 2.075 km SE of Adak, Alaska · 3668 days ago · 23 km deep · 17 km away
  41. 2.351 km NE of Adak, Alaska · 3668 days ago · 154 km deep · 98 km away
  42. 1.888 km E of Adak, Alaska · 3664 days ago · 55 km deep · 51 km away
  43. 3.14 km ESE of Adak, Alaska · 3663 days ago · 72 km deep · 86 km away
  44. 3.1Andreanof Islands, Aleutian Islands, Alaska · 3663 days ago · 10 km deep · 94 km away
  45. 1.731 km S of Adak, Alaska · 3662 days ago · 42 km deep · 74 km away
  46. 2.640 km S of Adak, Alaska · 3662 days ago · 42 km deep · 74 km away
  47. 2.770 km NE of Adak, Alaska · 3661 days ago · 226 km deep · 98 km away
  48. 2.033 km SSE of Adak, Alaska · 3661 days ago · 41 km deep · 63 km away
  49. 2.140 km ENE of Adak, Alaska · 3659 days ago · 133 km deep · 78 km away
  50. 3.180 km S of Atka, Alaska · 3659 days ago · 36 km deep · 89 km away
  51. 2.756 km SE of Adak, Alaska · 3657 days ago · 34 km deep · 40 km away
  52. 2.9Andreanof Islands, Aleutian Islands, Alaska · 3657 days ago · 36 km deep · 96 km away
  53. 1.933 km SSE of Adak, Alaska · 3657 days ago · 36 km deep · 63 km away
  54. 3.981 km S of Atka, Alaska · 3656 days ago · 42 km deep · 91 km away
  55. 3.056 km ENE of Adak, Alaska · 3656 days ago · 149 km deep · 83 km away
  56. 2.269 km E of Adak, Alaska · 3656 days ago · 34 km deep · 47 km away
  57. 1.528 km SSW of Adak, Alaska · 3655 days ago · 54 km deep · 86 km away
  58. 2.044 km E of Adak, Alaska · 3655 days ago · 69 km deep · 60 km away
  59. 1.748 km SW of Atka, Alaska · 3653 days ago · 16 km deep · 87 km away
  60. 1.643 km ESE of Adak, Alaska · 3653 days ago · 14 km deep · 49 km away

The first 60 of 77.

Before

  1. 1.680 km E of Adak, Alaska · 3698 days ago · 61 km deep · 53 km away
  2. 1.787 km SW of Atka, Alaska · 3698 days ago · 26 km deep · 48 km away
  3. 3.049 km ESE of Adak, Alaska · 3698 days ago · 56 km deep · 43 km away
  4. 1.994 km S of Atka, Alaska · 3699 days ago · 26 km deep · 89 km away
  5. 3.696 km SW of Atka, Alaska · 3700 days ago · 35 km deep · 39 km away
  6. 3.076 km SE of Adak, Alaska · 3701 days ago · 44 km deep · 15 km away
  7. 1.868 km SE of Adak, Alaska · 3701 days ago · 54 km deep · 24 km away
  8. 1.775 km ESE of Adak, Alaska · 3701 days ago · 58 km deep · 32 km away
  9. 1.640 km SSW of Adak, Alaska · 3701 days ago · 56 km deep · 89 km away
  10. 1.635 km SSW of Adak, Alaska · 3701 days ago · 58 km deep · 92 km away
  11. 1.848 km SSE of Adak, Alaska · 3701 days ago · 22 km deep · 60 km away
  12. 1.875 km E of Adak, Alaska · 3702 days ago · 69 km deep · 67 km away
  13. 1.660 km SSE of Adak, Alaska · 3703 days ago · 26 km deep · 39 km away
  14. 2.241 km SE of Adak, Alaska · 3704 days ago · 37 km deep · 52 km away
  15. 2.625 km SW of Adak, Alaska · 3705 days ago · 55 km deep · 97 km away
  16. 2.352 km SSE of Adak, Alaska · 3705 days ago · 26 km deep · 57 km away
  17. 3.889 km S of Atka, Alaska · 3705 days ago · 37 km deep · 98 km away
  18. 1.983 km SE of Adak, Alaska · 3705 days ago · 15 km deep · 8 km away
  19. 2.267 km SW of Atka, Alaska · 3706 days ago · 31 km deep · 69 km away
  20. 2.078 km ESE of Adak, Alaska · 3708 days ago · 73 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10006mig (also filed as ak016anx607x). Read Sun, Oct 4, 2026, 4:48 AM UTC.