Alaska earthquakes

M4.0 earthquake 90 km SW of Atka, Alaska

A magnitude 4.0 earthquake struck 90 km SW of Atka, Alaska on Fri, Mar 15, 2019, 4:39 AM HADT (13:39 UTC), 28 km (17 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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-03-15 13:39:28 UTC
Depth
27.9 km (17.3 mi), shallow
Epicenter
51.651° N, 175.177° 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
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.047 · 122 stations
3.9ML, 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 4.5 km horizontally, 4.8 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
141°
Stations used
184

Nearby

Within 100 km, magnitude 1.5 and up: 75 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 2.1133 km SSE of Adak, Alaska · 2757 days ago · 16 km deep · 91 km away
  2. 2.150 km SSE of Adak, Alaska · 2757 days ago · 37 km deep · 92 km away
  3. 4.091 km SW of Atka, Alaska · 2755 days ago · 39 km deep · 2 km away
  4. 2.068 km SE of Adak, Alaska · 2755 days ago · 44 km deep · 53 km away
  5. 2.847 km WSW of Atka, Alaska · 2754 days ago · 73 km deep · 54 km away
  6. 2.183 km SW of Atka, Alaska · 2754 days ago · 21 km deep · 11 km away
  7. 2.0Andreanof Islands, Aleutian Islands, Alaska · 2752 days ago · 48 km deep · 85 km away
  8. 2.346 km SSE of Adak, Alaska · 2752 days ago · 48 km deep · 84 km away
  9. 3.2123 km S of Atka, Alaska · 2749 days ago · 10 km deep · 100 km away
  10. 2.854 km NE of Adak, Alaska · 2748 days ago · 178 km deep · 88 km away
  11. 2.268 km SE of Adak, Alaska · 2748 days ago · 31 km deep · 64 km away
  12. 2.845 km ENE of Adak, Alaska · 2748 days ago · 138 km deep · 78 km away
  13. 2.730 km W of Atka, Alaska · 2747 days ago · 35 km deep · 70 km away
  14. 1.977 km SW of Atka, Alaska · 2745 days ago · 20 km deep · 14 km away
  15. 2.776 km W of Atka, Alaska · 2745 days ago · 144 km deep · 62 km away
  16. 4.747 km SE of Adak, Alaska · 2744 days ago · 49 km deep · 69 km away
  17. 2.444 km E of Adak, Alaska · 2739 days ago · 72 km deep · 61 km away
  18. 2.350 km ESE of Adak, Alaska · 2739 days ago · 54 km deep · 58 km away
  19. 2.497 km SW of Atka, Alaska · 2739 days ago · 37 km deep · 7 km away
  20. 2.050 km SSE of Adak, Alaska · 2738 days ago · 39 km deep · 94 km away
  21. 2.370 km SSE of Adak, Alaska · 2738 days ago · 19 km deep · 93 km away
  22. 2.975 km E of Adak, Alaska · 2738 days ago · 71 km deep · 38 km away
  23. 2.062 km SE of Adak, Alaska · 2736 days ago · 55 km deep · 50 km away
  24. 1.725 km ESE of Adak, Alaska · 2734 days ago · 70 km deep · 78 km away
  25. 1.928 km SSE of Adak, Alaska · 2733 days ago · 71 km deep · 92 km away
  26. 2.544 km SW of Atka, Alaska · 2733 days ago · 70 km deep · 46 km away
  27. 2.849 km SSE of Adak, Alaska · 2733 days ago · 35 km deep · 75 km away
  28. 3.992 km SW of Atka, Alaska · 2731 days ago · 35 km deep · 2 km away
  29. 2.028 km SE of Adak, Alaska · 2729 days ago · 73 km deep · 84 km away
  30. 1.974 km ESE of Adak, Alaska · 2724 days ago · 35 km deep · 33 km away
  31. 1.961 km E of Adak, Alaska · 2724 days ago · 62 km deep · 43 km away
  32. 1.815 km SE of Adak, Alaska · 2722 days ago · 58 km deep · 91 km away
  33. 2.028 km ESE of Adak, Alaska · 2721 days ago · 85 km deep · 76 km away
  34. 2.255 km SSE of Adak, Alaska · 2721 days ago · 16 km deep · 77 km away
  35. 2.940 km SSE of Adak, Alaska · 2720 days ago · 45 km deep · 83 km away
  36. 3.4123 km SE of Adak, Alaska · 2720 days ago · 10 km deep · 56 km away
  37. 2.457 km SSE of Adak, Alaska · 2719 days ago · 31 km deep · 87 km away
  38. 2.467 km SW of Atka, Alaska · 2717 days ago · 25 km deep · 24 km away
  39. 1.689 km E of Adak, Alaska · 2717 days ago · 51 km deep · 16 km away
  40. 2.9120 km SE of Adak, Alaska · 2717 days ago · 26 km deep · 54 km away
  41. 2.632 km SSE of Adak, Alaska · 2717 days ago · 48 km deep · 83 km away
  42. 1.923 km SSE of Adak, Alaska · 2716 days ago · 51 km deep · 89 km away
  43. 2.980 km ENE of Adak, Alaska · 2716 days ago · 168 km deep · 77 km away
  44. 4.063 km SE of Adak, Alaska · 2712 days ago · 28 km deep · 59 km away
  45. 2.464 km SSE of Adak, Alaska · 2712 days ago · 22 km deep · 75 km away
  46. 2.369 km ESE of Adak, Alaska · 2711 days ago · 51 km deep · 34 km away
  47. 2.253 km SE of Adak, Alaska · 2711 days ago · 57 km deep · 68 km away
  48. 1.545 km ENE of Adak, Alaska · 2710 days ago · 11 km deep · 76 km away
  49. 1.754 km SSE of Adak, Alaska · 2710 days ago · 24 km deep · 83 km away
  50. 1.742 km SSE of Adak, Alaska · 2710 days ago · 31 km deep · 85 km away
  51. 2.075 km ENE of Adak, Alaska · 2710 days ago · 104 km deep · 73 km away
  52. 1.634 km SSE of Adak, Alaska · 2710 days ago · 43 km deep · 86 km away
  53. 1.879 km WSW of Atka, Alaska · 2709 days ago · 114 km deep · 44 km away
  54. 2.440 km W of Atka, Alaska · 2708 days ago · 131 km deep · 65 km away
  55. 1.959 km SE of Adak, Alaska · 2707 days ago · 23 km deep · 68 km away
  56. 3.529 km SW of Atka, Alaska · 2707 days ago · 73 km deep · 61 km away
  57. 2.375 km ESE of Adak, Alaska · 2707 days ago · 53 km deep · 28 km away
  58. 2.277 km E of Adak, Alaska · 2707 days ago · 68 km deep · 30 km away
  59. 1.926 km SE of Adak, Alaska · 2707 days ago · 47 km deep · 84 km away
  60. 2.143 km SSE of Adak, Alaska · 2706 days ago · 44 km deep · 92 km away

The first 60 of 75.

Before

  1. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2757 days ago · 53 km deep · 69 km away
  2. 2.684 km SW of Atka, Alaska · 2758 days ago · 35 km deep · 8 km away
  3. 1.961 km SW of Atka, Alaska · 2758 days ago · 40 km deep · 31 km away
  4. 2.249 km E of Adak, Alaska · 2758 days ago · 65 km deep · 57 km away
  5. 1.970 km SE of Adak, Alaska · 2758 days ago · 23 km deep · 55 km away
  6. 2.678 km ESE of Adak, Alaska · 2759 days ago · 35 km deep · 28 km away
  7. 1.633 km SSE of Adak, Alaska · 2762 days ago · 46 km deep · 84 km away
  8. 2.355 km E of Adak, Alaska · 2765 days ago · 61 km deep · 57 km away
  9. 2.649 km SSE of Adak, Alaska · 2765 days ago · 34 km deep · 89 km away
  10. 3.693 km SW of Atka, Alaska · 2765 days ago · 37 km deep · 4 km away
  11. 2.783 km SW of Atka, Alaska · 2765 days ago · 35 km deep · 14 km away
  12. 2.485 km SW of Atka, Alaska · 2765 days ago · 41 km deep · 11 km away
  13. 5.190 km E of Adak, Alaska · 2765 days ago · 46 km deep · 16 km away
  14. 1.659 km ENE of Adak, Alaska · 2768 days ago · -2 km deep · 65 km away
  15. 2.183 km SSE of Adak, Alaska · 2768 days ago · 15 km deep · 97 km away
  16. 2.458 km SE of Adak, Alaska · 2768 days ago · 35 km deep · 72 km away
  17. 1.541 km ENE of Adak, Alaska · 2769 days ago · 3 km deep · 80 km away
  18. 1.641 km ENE of Adak, Alaska · 2769 days ago · 4 km deep · 80 km away
  19. 2.568 km E of Adak, Alaska · 2769 days ago · 175 km deep · 45 km away
  20. 2.358 km SSW of Atka, Alaska · 2770 days ago · 19 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000jgfe (also filed as ak0193elqqnv). Read Thu, Oct 1, 2026, 5:16 PM UTC.