Alaska earthquakes

M3.9 earthquake 83 km S of Adak, Alaska

A magnitude 3.9 earthquake struck 83 km S of Adak, Alaska on Sat, Feb 16, 2019, 12:49 AM HAST (10:49 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.7 47 km SE of Adak, 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
3.9 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-02-16 10:49:08 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.130° N, 176.752° 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
3.9mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.076 · 46 stations
3.8ML, 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 6.8 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
210°, poorly surrounded by stations
Stations used
61

Nearby

Within 100 km, magnitude 1.5 and up: 88 in the 60 days after this one and 59 in the 30 days before it.

After

  1. 1.846 km SSW of Adak, Alaska · 2785 days ago · 35 km deep · 38 km away
  2. 1.946 km SSW of Adak, Alaska · 2784 days ago · 39 km deep · 39 km away
  3. 2.552 km S of Adak, Alaska · 2784 days ago · 35 km deep · 31 km away
  4. 1.961 km SE of Adak, Alaska · 2784 days ago · 26 km deep · 55 km away
  5. 2.250 km SSW of Adak, Alaska · 2784 days ago · 26 km deep · 33 km away
  6. 2.199 km SW of Adak, Alaska · 2783 days ago · 25 km deep · 61 km away
  7. 2.653 km S of Adak, Alaska · 2782 days ago · 35 km deep · 30 km away
  8. 2.644 km SSW of Adak, Alaska · 2781 days ago · 40 km deep · 40 km away
  9. 4.151 km SSW of Adak, Alaska · 2781 days ago · 35 km deep · 33 km away
  10. 1.88 km NNE of Adak, Alaska · 2781 days ago · 5 km deep · 91 km away
  11. 2.553 km SSW of Adak, Alaska · 2781 days ago · 35 km deep · 31 km away
  12. 1.845 km S of Adak, Alaska · 2781 days ago · 24 km deep · 38 km away
  13. 1.937 km SSW of Adak, Alaska · 2781 days ago · 47 km deep · 48 km away
  14. 3.064 km SSE of Adak, Alaska · 2777 days ago · 35 km deep · 37 km away
  15. 1.846 km SSW of Adak, Alaska · 2777 days ago · 36 km deep · 39 km away
  16. 2.433 km SSE of Adak, Alaska · 2774 days ago · 40 km deep · 59 km away
  17. 2.285 km WSW of Adak, Alaska · 2774 days ago · 67 km deep · 91 km away
  18. 2.419 km S of Adak, Alaska · 2773 days ago · 71 km deep · 64 km away
  19. 2.632 km SW of Adak, Alaska · 2773 days ago · 62 km deep · 58 km away
  20. 1.619 km W of Adak, Alaska · 2772 days ago · -2 km deep · 86 km away
  21. 1.718 km W of Adak, Alaska · 2771 days ago · 0 km deep · 83 km away
  22. 2.128 km SSE of Adak, Alaska · 2771 days ago · 52 km deep · 63 km away
  23. 2.171 km WSW of Adak, Alaska · 2771 days ago · 66 km deep · 93 km away
  24. 2.458 km SE of Adak, Alaska · 2769 days ago · 35 km deep · 54 km away
  25. 2.183 km SSE of Adak, Alaska · 2768 days ago · 15 km deep · 30 km away
  26. 1.748 km W of Adak, Alaska · 2767 days ago · 8 km deep · 88 km away
  27. 2.649 km SSE of Adak, Alaska · 2765 days ago · 34 km deep · 42 km away
  28. 1.635 km WSW of Adak, Alaska · 2765 days ago · 11 km deep · 72 km away
  29. 1.663 km WSW of Adak, Alaska · 2762 days ago · 9 km deep · 88 km away
  30. 1.633 km SSE of Adak, Alaska · 2762 days ago · 46 km deep · 60 km away
  31. 2.8125 km SW of Adak, Alaska · 2762 days ago · 46 km deep · 94 km away
  32. 2.648 km SW of Adak, Alaska · 2762 days ago · 23 km deep · 56 km away
  33. 2.382 km WSW of Adak, Alaska · 2761 days ago · 68 km deep · 94 km away
  34. 2.428 km SSW of Adak, Alaska · 2760 days ago · 43 km deep · 56 km away
  35. 2.678 km ESE of Adak, Alaska · 2760 days ago · 35 km deep · 98 km away
  36. 1.970 km SE of Adak, Alaska · 2759 days ago · 23 km deep · 69 km away
  37. 2.044 km SW of Adak, Alaska · 2759 days ago · 60 km deep · 57 km away
  38. 2.5127 km SW of Adak, Alaska · 2759 days ago · 24 km deep · 94 km away
  39. 2.641 km WSW of Adak, Alaska · 2758 days ago · 78 km deep · 77 km away
  40. 3.050 km SSW of Adak, Alaska · 2758 days ago · 35 km deep · 34 km away
  41. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2758 days ago · 53 km deep · 57 km away
  42. 2.074 km WSW of Adak, Alaska · 2757 days ago · 37 km deep · 73 km away
  43. 2.1133 km SSE of Adak, Alaska · 2757 days ago · 16 km deep · 87 km away
  44. 2.693 km WSW of Adak, Alaska · 2757 days ago · 35 km deep · 86 km away
  45. 2.150 km SSE of Adak, Alaska · 2757 days ago · 37 km deep · 39 km away
  46. 1.936 km SW of Adak, Alaska · 2757 days ago · 40 km deep · 59 km away
  47. 1.955 km WSW of Adak, Alaska · 2757 days ago · 23 km deep · 77 km away
  48. 2.2133 km SW of Adak, Alaska · 2756 days ago · 20 km deep · 89 km away
  49. 2.068 km SE of Adak, Alaska · 2755 days ago · 44 km deep · 71 km away
  50. 2.0Andreanof Islands, Aleutian Islands, Alaska · 2753 days ago · 48 km deep · 60 km away
  51. 2.346 km SSE of Adak, Alaska · 2752 days ago · 48 km deep · 48 km away
  52. 2.4125 km SW of Adak, Alaska · 2752 days ago · 23 km deep · 95 km away
  53. 1.967 km S of Adak, Alaska · 2752 days ago · 21 km deep · 18 km away
  54. 2.9100 km SW of Adak, Alaska · 2751 days ago · 35 km deep · 75 km away
  55. 3.835 km S of Adak, Alaska · 2749 days ago · 49 km deep · 48 km away
  56. 2.268 km SE of Adak, Alaska · 2749 days ago · 31 km deep · 60 km away
  57. 3.8158 km S of Adak, Alaska · 2748 days ago · 10 km deep · 75 km away
  58. 4.1174 km S of Adak, Alaska · 2746 days ago · 10 km deep · 95 km away
  59. 2.8170 km S of Adak, Alaska · 2745 days ago · 10 km deep · 91 km away
  60. 3.256 km WSW of Adak, Alaska · 2745 days ago · 28 km deep · 69 km away

The first 60 of 88.

Before

  1. 2.340 km SSW of Adak, Alaska · 2785 days ago · 43 km deep · 44 km away
  2. 1.926 km SW of Adak, Alaska · 2785 days ago · 50 km deep · 62 km away
  3. 2.030 km SSW of Adak, Alaska · 2785 days ago · 53 km deep · 54 km away
  4. 2.242 km SSW of Adak, Alaska · 2785 days ago · 46 km deep · 44 km away
  5. 2.339 km SSW of Adak, Alaska · 2785 days ago · 47 km deep · 47 km away
  6. 5.025 km SW of Adak, Alaska · 2785 days ago · 55 km deep · 67 km away · felt by 2
  7. 2.475 km SW of Adak, Alaska · 2786 days ago · 38 km deep · 59 km away
  8. 2.459 km SSE of Adak, Alaska · 2786 days ago · 20 km deep · 52 km away
  9. 2.324 km SE of Adak, Alaska · 2786 days ago · 52 km deep · 66 km away
  10. 1.843 km W of Adak, Alaska · 2786 days ago · 73 km deep · 89 km away
  11. 2.583 km SE of Adak, Alaska · 2787 days ago · 35 km deep · 67 km away
  12. 2.452 km SE of Adak, Alaska · 2787 days ago · 57 km deep · 64 km away
  13. 2.177 km SE of Adak, Alaska · 2788 days ago · 16 km deep · 76 km away
  14. 1.658 km SW of Adak, Alaska · 2788 days ago · 36 km deep · 43 km away
  15. 1.947 km S of Adak, Alaska · 2788 days ago · 35 km deep · 35 km away
  16. 2.4126 km SW of Adak, Alaska · 2792 days ago · 39 km deep · 95 km away
  17. 2.163 km SSW of Adak, Alaska · 2793 days ago · 25 km deep · 29 km away
  18. 2.5Andreanof Islands, Aleutian Islands, Alaska · 2793 days ago · 69 km deep · 67 km away
  19. 2.460 km SSE of Adak, Alaska · 2796 days ago · 26 km deep · 42 km away
  20. 2.324 km SSE of Adak, Alaska · 2796 days ago · 48 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000jiu9 (also filed as ak01925wi69e). Read Fri, Oct 2, 2026, 1:01 AM UTC.