Alaska earthquakes

M3.1 earthquake 72 km W of Adak, Alaska

A magnitude 3.1 earthquake struck 72 km W of Adak, Alaska on Fri, Aug 16, 2019, 9:24 AM HADT (18:24 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M5.4 146 km WSW 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
2019-08-16 18:24:56 UTC
Depth
20.6 km (12.8 mi), shallow
Epicenter
51.763° N, 177.668° 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 6.2 km horizontally, 9.2 km in depth
Depth from
From location
Station coverage gap
164°
Stations used
48

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 83 in the 30 days before it.

After

  1. 2.3146 km WSW of Adak, Alaska · 2601 days ago · 83 km deep · 74 km away
  2. 2.092 km WSW of Adak, Alaska · 2601 days ago · 28 km deep · 39 km away
  3. 1.942 km NNW of Adak, Alaska · 2601 days ago · 131 km deep · 78 km away
  4. 1.8165 km W of Adak, Alaska · 2601 days ago · 7 km deep · 94 km away
  5. 3.176 km S of Adak, Alaska · 2601 days ago · 21 km deep · 94 km away
  6. 1.6Andreanof Islands, Aleutian Islands, Alaska · 2600 days ago · 14 km deep · 60 km away
  7. 2.3143 km WSW of Adak, Alaska · 2600 days ago · 46 km deep · 77 km away
  8. 3.151 km WSW of Adak, Alaska · 2600 days ago · 86 km deep · 26 km away
  9. 1.834 km SSE of Adak, Alaska · 2600 days ago · 50 km deep · 92 km away
  10. 1.847 km S of Adak, Alaska · 2599 days ago · 49 km deep · 79 km away
  11. 2.0144 km WSW of Adak, Alaska · 2599 days ago · 27 km deep · 76 km away
  12. 1.7113 km WSW of Adak, Alaska · 2599 days ago · 28 km deep · 43 km away
  13. 1.672 km SW of Adak, Alaska · 2599 days ago · 44 km deep · 37 km away
  14. 3.3156 km W of Adak, Alaska · 2599 days ago · 249 km deep · 88 km away
  15. 1.9Andreanof Islands, Aleutian Islands, Alaska · 2598 days ago · 13 km deep · 57 km away
  16. 1.7131 km SW of Adak, Alaska · 2598 days ago · 26 km deep · 73 km away
  17. 1.7166 km WSW of Adak, Alaska · 2598 days ago · 20 km deep · 100 km away
  18. 1.9109 km SW of Adak, Alaska · 2598 days ago · 27 km deep · 63 km away
  19. 1.6105 km SW of Adak, Alaska · 2597 days ago · 36 km deep · 72 km away
  20. 2.275 km SW of Adak, Alaska · 2596 days ago · 33 km deep · 31 km away
  21. 1.869 km SSW of Adak, Alaska · 2596 days ago · 29 km deep · 64 km away
  22. 1.5131 km WSW of Adak, Alaska · 2596 days ago · 27 km deep · 70 km away
  23. 1.9111 km WSW of Adak, Alaska · 2595 days ago · 10 km deep · 42 km away
  24. 1.5165 km WSW of Adak, Alaska · 2595 days ago · 24 km deep · 93 km away
  25. 1.9127 km SW of Adak, Alaska · 2594 days ago · 28 km deep · 72 km away
  26. 1.679 km WSW of Adak, Alaska · 2594 days ago · 77 km deep · 12 km away
  27. 1.9133 km SW of Adak, Alaska · 2593 days ago · 26 km deep · 77 km away
  28. 1.5113 km WSW of Adak, Alaska · 2593 days ago · 13 km deep · 45 km away
  29. 2.6133 km SW of Adak, Alaska · 2593 days ago · 29 km deep · 78 km away
  30. 1.633 km S of Adak, Alaska · 2593 days ago · 39 km deep · 72 km away
  31. 1.662 km SW of Adak, Alaska · 2593 days ago · 43 km deep · 47 km away
  32. 2.0165 km W of Adak, Alaska · 2590 days ago · 8 km deep · 93 km away
  33. 1.569 km SSW of Adak, Alaska · 2590 days ago · 26 km deep · 70 km away
  34. 2.1169 km WSW of Adak, Alaska · 2590 days ago · 12 km deep · 97 km away
  35. 3.551 km S of Adak, Alaska · 2590 days ago · 45 km deep · 76 km away · felt by 1
  36. 2.447 km S of Adak, Alaska · 2590 days ago · 35 km deep · 73 km away
  37. 1.753 km SSE of Adak, Alaska · 2590 days ago · 28 km deep · 92 km away
  38. 1.9125 km SW of Adak, Alaska · 2589 days ago · 40 km deep · 91 km away
  39. 1.6151 km SW of Adak, Alaska · 2585 days ago · 26 km deep · 96 km away
  40. 2.0135 km WSW of Adak, Alaska · 2585 days ago · 23 km deep · 72 km away
  41. 1.9131 km WSW of Adak, Alaska · 2585 days ago · 26 km deep · 67 km away
  42. 2.2142 km WSW of Adak, Alaska · 2585 days ago · 26 km deep · 77 km away
  43. 1.7143 km WSW of Adak, Alaska · 2585 days ago · 26 km deep · 79 km away
  44. 1.7128 km W of Adak, Alaska · 2585 days ago · 13 km deep · 56 km away
  45. 1.8115 km W of Adak, Alaska · 2585 days ago · 70 km deep · 43 km away
  46. 2.156 km SSW of Adak, Alaska · 2584 days ago · 45 km deep · 74 km away
  47. 3.7133 km WSW of Adak, Alaska · 2584 days ago · 33 km deep · 70 km away
  48. 3.0138 km WSW of Adak, Alaska · 2584 days ago · 33 km deep · 77 km away
  49. 1.5126 km W of Adak, Alaska · 2584 days ago · 13 km deep · 54 km away
  50. 1.5125 km WSW of Adak, Alaska · 2584 days ago · 7 km deep · 54 km away
  51. 1.6Andreanof Islands, Aleutian Islands, Alaska · 2584 days ago · 23 km deep · 75 km away
  52. 1.6102 km SW of Adak, Alaska · 2584 days ago · 47 km deep · 52 km away
  53. 2.0113 km W of Adak, Alaska · 2583 days ago · 181 km deep · 50 km away
  54. 1.611 km NE of Adak, Alaska · 2583 days ago · 104 km deep · 81 km away
  55. 2.130 km SSE of Adak, Alaska · 2583 days ago · 49 km deep · 87 km away
  56. 3.7153 km WSW of Adak, Alaska · 2583 days ago · 18 km deep · 82 km away
  57. 1.5126 km SW of Adak, Alaska · 2583 days ago · 13 km deep · 74 km away
  58. 1.728 km ENE of Adak, Alaska · 2582 days ago · 79 km deep · 99 km away
  59. 1.539 km SSE of Adak, Alaska · 2582 days ago · 35 km deep · 92 km away
  60. 1.9117 km WSW of Adak, Alaska · 2582 days ago · 26 km deep · 53 km away

The first 60 of at least 201.

Before

  1. 1.990 km SW of Adak, Alaska · 2604 days ago · 56 km deep · 65 km away
  2. 3.9Andreanof Islands, Aleutian Islands, Alaska · 2604 days ago · 35 km deep · 60 km away
  3. 2.1104 km SW of Adak, Alaska · 2605 days ago · 44 km deep · 67 km away
  4. 2.0105 km SW of Adak, Alaska · 2606 days ago · 27 km deep · 50 km away
  5. 1.978 km WSW of Adak, Alaska · 2606 days ago · 13 km deep · 25 km away
  6. 1.7145 km W of Adak, Alaska · 2606 days ago · 10 km deep · 73 km away
  7. 1.5124 km WSW of Adak, Alaska · 2606 days ago · 22 km deep · 57 km away
  8. 2.019 km SSE of Adak, Alaska · 2606 days ago · 71 km deep · 80 km away
  9. 1.638 km NNW of Adak, Alaska · 2607 days ago · 149 km deep · 74 km away
  10. 1.654 km W of Adak, Alaska · 2607 days ago · 21 km deep · 22 km away
  11. 1.854 km W of Adak, Alaska · 2607 days ago · 22 km deep · 21 km away
  12. 1.6143 km WSW of Adak, Alaska · 2607 days ago · 26 km deep · 80 km away
  13. 1.6129 km SW of Adak, Alaska · 2607 days ago · 21 km deep · 76 km away
  14. 1.6159 km WSW of Adak, Alaska · 2608 days ago · 13 km deep · 87 km away
  15. 1.6140 km WSW of Adak, Alaska · 2608 days ago · 5 km deep · 69 km away
  16. 2.6126 km WSW of Adak, Alaska · 2608 days ago · 10 km deep · 56 km away
  17. 2.6125 km WSW of Adak, Alaska · 2608 days ago · 33 km deep · 63 km away
  18. 2.3Andreanof Islands, Aleutian Islands, Alaska · 2609 days ago · 92 km deep · 37 km away
  19. 1.696 km WSW of Adak, Alaska · 2610 days ago · 26 km deep · 37 km away
  20. 1.598 km WSW of Adak, Alaska · 2610 days ago · 47 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005g1c (also filed as ak019ahdeakw). Read Fri, Oct 2, 2026, 3:35 AM UTC.