Alaska earthquakes

M3.1 earthquake 76 km S of Adak, Alaska

A magnitude 3.1 earthquake struck 76 km S of Adak, Alaska on Mon, Aug 19, 2019, 6:28 AM HADT (15:28 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.4 166 km SSW 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
3.1 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-08-19 15:28:50 UTC
Depth
20.7 km (12.9 mi), shallow
Epicenter
51.191° N, 176.668° 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
3.1ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed
3.1ML, 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 4.8 km horizontally, 8.0 km in depth
Stations used
31

Nearby

Within 100 km, magnitude 1.5 and up: 134 in the 60 days after this one and 62 in the 30 days before it.

After

  1. 3.151 km WSW of Adak, Alaska · 2600 days ago · 86 km deep · 70 km away
  2. 1.834 km SSE of Adak, Alaska · 2600 days ago · 50 km deep · 52 km away
  3. 1.847 km S of Adak, Alaska · 2599 days ago · 49 km deep · 28 km away
  4. 1.672 km SW of Adak, Alaska · 2599 days ago · 44 km deep · 62 km away
  5. 1.9109 km SW of Adak, Alaska · 2598 days ago · 27 km deep · 78 km away
  6. 2.1175 km S of Adak, Alaska · 2597 days ago · 23 km deep · 99 km away
  7. 1.6105 km SW of Adak, Alaska · 2597 days ago · 36 km deep · 62 km away
  8. 2.580 km ESE of Adak, Alaska · 2596 days ago · 35 km deep · 98 km away
  9. 2.275 km SW of Adak, Alaska · 2596 days ago · 33 km deep · 69 km away
  10. 1.869 km SSW of Adak, Alaska · 2596 days ago · 29 km deep · 33 km away
  11. 1.9127 km SW of Adak, Alaska · 2594 days ago · 28 km deep · 99 km away
  12. 1.763 km SE of Adak, Alaska · 2594 days ago · 26 km deep · 49 km away
  13. 1.655 km SSE of Adak, Alaska · 2594 days ago · 23 km deep · 39 km away
  14. 1.679 km WSW of Adak, Alaska · 2593 days ago · 77 km deep · 91 km away
  15. 2.172 km SE of Adak, Alaska · 2593 days ago · 35 km deep · 62 km away
  16. 1.633 km S of Adak, Alaska · 2592 days ago · 39 km deep · 42 km away
  17. 1.662 km SW of Adak, Alaska · 2592 days ago · 43 km deep · 48 km away
  18. 1.569 km SSW of Adak, Alaska · 2590 days ago · 26 km deep · 26 km away
  19. 2.5136 km SSW of Adak, Alaska · 2590 days ago · 10 km deep · 80 km away
  20. 2.6136 km SSW of Adak, Alaska · 2590 days ago · 10 km deep · 82 km away
  21. 3.551 km S of Adak, Alaska · 2590 days ago · 45 km deep · 25 km away · felt by 1
  22. 2.447 km S of Adak, Alaska · 2590 days ago · 35 km deep · 29 km away
  23. 1.898 km S of Adak, Alaska · 2590 days ago · 42 km deep · 24 km away
  24. 1.984 km ESE of Adak, Alaska · 2590 days ago · 47 km deep · 99 km away
  25. 1.753 km SSE of Adak, Alaska · 2590 days ago · 28 km deep · 27 km away
  26. 1.9125 km SW of Adak, Alaska · 2589 days ago · 40 km deep · 74 km away
  27. 3.381 km SE of Adak, Alaska · 2589 days ago · 10 km deep · 72 km away
  28. 1.559 km SE of Adak, Alaska · 2584 days ago · 26 km deep · 46 km away
  29. 2.049 km ESE of Adak, Alaska · 2584 days ago · 46 km deep · 66 km away
  30. 2.156 km SSW of Adak, Alaska · 2584 days ago · 45 km deep · 23 km away
  31. 1.633 km E of Adak, Alaska · 2583 days ago · 69 km deep · 81 km away
  32. 1.672 km SSE of Adak, Alaska · 2583 days ago · 26 km deep · 28 km away
  33. 1.6102 km SW of Adak, Alaska · 2583 days ago · 47 km deep · 80 km away
  34. 1.611 km NE of Adak, Alaska · 2583 days ago · 104 km deep · 85 km away
  35. 2.130 km SSE of Adak, Alaska · 2583 days ago · 49 km deep · 52 km away
  36. 1.5126 km SW of Adak, Alaska · 2582 days ago · 13 km deep · 95 km away
  37. 1.728 km ENE of Adak, Alaska · 2582 days ago · 79 km deep · 92 km away
  38. 1.539 km SSE of Adak, Alaska · 2582 days ago · 35 km deep · 45 km away
  39. 1.555 km S of Adak, Alaska · 2581 days ago · 21 km deep · 21 km away
  40. 1.736 km SW of Adak, Alaska · 2581 days ago · 64 km deep · 59 km away
  41. 1.572 km SSE of Adak, Alaska · 2580 days ago · 20 km deep · 29 km away
  42. 1.571 km SSE of Adak, Alaska · 2580 days ago · 21 km deep · 25 km away
  43. 1.8112 km SW of Adak, Alaska · 2580 days ago · 25 km deep · 71 km away
  44. 2.480 km SW of Adak, Alaska · 2579 days ago · 44 km deep · 72 km away
  45. 5.4166 km SSW of Adak, Alaska · 2579 days ago · 10 km deep · 93 km away · felt by 1 · tsunami flag
  46. 3.6166 km SSW of Adak, Alaska · 2579 days ago · 10 km deep · 95 km away
  47. 1.6160 km SSW of Adak, Alaska · 2579 days ago · 25 km deep · 87 km away
  48. 1.828 km NW of Adak, Alaska · 2579 days ago · 191 km deep · 99 km away
  49. 1.7166 km SSW of Adak, Alaska · 2579 days ago · 48 km deep · 92 km away
  50. 1.7102 km SW of Adak, Alaska · 2578 days ago · 46 km deep · 84 km away
  51. 2.040 km SSW of Adak, Alaska · 2578 days ago · 58 km deep · 43 km away
  52. 2.1128 km SW of Adak, Alaska · 2578 days ago · 26 km deep · 100 km away
  53. 2.146 km S of Adak, Alaska · 2577 days ago · 34 km deep · 29 km away
  54. 1.965 km WSW of Adak, Alaska · 2577 days ago · 20 km deep · 89 km away
  55. 4.059 km SE of Adak, Alaska · 2577 days ago · 42 km deep · 53 km away
  56. 2.199 km SW of Adak, Alaska · 2577 days ago · 47 km deep · 82 km away
  57. 2.4104 km SW of Adak, Alaska · 2577 days ago · 39 km deep · 73 km away
  58. 2.167 km WSW of Adak, Alaska · 2576 days ago · 39 km deep · 69 km away
  59. 1.752 km SSE of Adak, Alaska · 2575 days ago · 28 km deep · 29 km away
  60. 2.2Andreanof Islands, Aleutian Islands, Alaska · 2575 days ago · 58 km deep · 52 km away

The first 60 of 134.

Before

  1. 2.092 km WSW of Adak, Alaska · 2601 days ago · 28 km deep · 80 km away
  2. 1.846 km SE of Adak, Alaska · 2601 days ago · 44 km deep · 61 km away
  3. 3.172 km W of Adak, Alaska · 2603 days ago · 21 km deep · 94 km away
  4. 1.990 km SW of Adak, Alaska · 2604 days ago · 56 km deep · 50 km away
  5. 3.9Andreanof Islands, Aleutian Islands, Alaska · 2604 days ago · 35 km deep · 98 km away
  6. 2.1104 km SW of Adak, Alaska · 2605 days ago · 44 km deep · 66 km away
  7. 3.159 km SE of Adak, Alaska · 2605 days ago · 35 km deep · 58 km away
  8. 2.0105 km SW of Adak, Alaska · 2605 days ago · 27 km deep · 86 km away
  9. 1.978 km WSW of Adak, Alaska · 2606 days ago · 13 km deep · 78 km away
  10. 2.019 km SSE of Adak, Alaska · 2606 days ago · 71 km deep · 59 km away
  11. 1.654 km W of Adak, Alaska · 2606 days ago · 21 km deep · 93 km away
  12. 1.854 km W of Adak, Alaska · 2606 days ago · 22 km deep · 93 km away
  13. 1.6129 km SW of Adak, Alaska · 2607 days ago · 21 km deep · 98 km away
  14. 2.6104 km SSE of Adak, Alaska · 2607 days ago · 10 km deep · 39 km away
  15. 1.656 km SSE of Adak, Alaska · 2607 days ago · 25 km deep · 37 km away
  16. 1.692 km SE of Adak, Alaska · 2607 days ago · 20 km deep · 76 km away
  17. 1.760 km SE of Adak, Alaska · 2608 days ago · 23 km deep · 60 km away
  18. 2.3Andreanof Islands, Aleutian Islands, Alaska · 2609 days ago · 92 km deep · 86 km away
  19. 1.696 km WSW of Adak, Alaska · 2610 days ago · 26 km deep · 87 km away
  20. 1.598 km WSW of Adak, Alaska · 2610 days ago · 47 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005xds (also filed as ak019ama8s0p). Read Thu, Oct 1, 2026, 7:17 PM UTC.