Alaska earthquakes

M2.3 earthquake 103 km S of Unalaska, Alaska

A magnitude 2.3 earthquake struck 103 km S of Unalaska, Alaska on Tue, Aug 21, 2018, 6:11 PM AKDT (02:11 UTC), 36 km (22 mi) below the surface.

A larger quake followed: M4.2 69 km E of Nikolski, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-08-22 02:11:00 UTC
Depth
36.1 km (22.4 mi), shallow
Epicenter
52.948° N, 166.723° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
25

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 74 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 2.067 km SSW of Unalaska, Alaska · 2962 days ago · 46 km deep · 39 km away
  2. 2.0147 km S of Unalaska, Alaska · 2961 days ago · 18 km deep · 45 km away
  3. 2.173 km SE of Unalaska, Alaska · 2961 days ago · 16 km deep · 93 km away
  4. 2.354 km ESE of Nikolski, Alaska · 2960 days ago · 24 km deep · 99 km away
  5. 4.269 km E of Nikolski, Alaska · 2960 days ago · 30 km deep · 74 km away
  6. 2.354 km SE of Unalaska, Alaska · 2959 days ago · 52 km deep · 88 km away
  7. 1.553 km SW of Unalaska, Alaska · 2959 days ago · 13 km deep · 71 km away
  8. 2.319 km SE of Unalaska, Alaska · 2959 days ago · 75 km deep · 96 km away
  9. 4.179 km S of Unalaska, Alaska · 2959 days ago · 39 km deep · 24 km away
  10. 3.082 km SSW of Unalaska, Alaska · 2958 days ago · 26 km deep · 33 km away
  11. 2.289 km SSW of Unalaska, Alaska · 2958 days ago · 26 km deep · 23 km away
  12. 2.073 km WSW of Unalaska, Alaska · 2958 days ago · 13 km deep · 82 km away
  13. 1.9147 km ESE of Nikolski, Alaska · 2957 days ago · 17 km deep · 47 km away
  14. 2.944 km SE of Unalaska, Alaska · 2957 days ago · 49 km deep · 82 km away
  15. 2.395 km SSW of Unalaska, Alaska · 2957 days ago · 26 km deep · 28 km away
  16. 2.144 km S of Unalaska, Alaska · 2956 days ago · 58 km deep · 61 km away
  17. 2.7123 km ESE of Nikolski, Alaska · 2956 days ago · 35 km deep · 35 km away
  18. 2.535 km SE of Unalaska, Alaska · 2955 days ago · 72 km deep · 83 km away
  19. 2.075 km SW of Unalaska, Alaska · 2955 days ago · 26 km deep · 54 km away
  20. 2.179 km S of Unalaska, Alaska · 2955 days ago · 22 km deep · 24 km away
  21. 2.673 km S of Unalaska, Alaska · 2953 days ago · 35 km deep · 31 km away
  22. 2.549 km ESE of Nikolski, Alaska · 2950 days ago · 36 km deep · 96 km away
  23. 1.846 km SW of Unalaska, Alaska · 2950 days ago · 16 km deep · 74 km away
  24. 1.6Fox Islands, Aleutian Islands, Alaska · 2950 days ago · 25 km deep · 34 km away
  25. 1.686 km SSW of Unalaska, Alaska · 2949 days ago · 43 km deep · 32 km away
  26. 1.662 km SE of Unalaska, Alaska · 2948 days ago · 42 km deep · 88 km away
  27. 3.059 km ESE of Unalaska, Alaska · 2947 days ago · 56 km deep · 95 km away
  28. 1.6124 km ESE of Nikolski, Alaska · 2946 days ago · 26 km deep · 35 km away
  29. 1.678 km SE of Unalaska, Alaska · 2946 days ago · 21 km deep · 89 km away
  30. 1.778 km SW of Unalaska, Alaska · 2945 days ago · 25 km deep · 66 km away
  31. 1.791 km SSW of Unalaska, Alaska · 2944 days ago · 35 km deep · 33 km away
  32. 1.697 km SSW of Unalaska, Alaska · 2943 days ago · 25 km deep · 42 km away
  33. 1.579 km SW of Unalaska, Alaska · 2943 days ago · 13 km deep · 60 km away
  34. 2.184 km E of Nikolski, Alaska · 2943 days ago · 34 km deep · 60 km away
  35. 2.386 km WSW of Unalaska, Alaska · 2943 days ago · 90 km deep · 87 km away
  36. 1.991 km SSW of Unalaska, Alaska · 2942 days ago · 42 km deep · 18 km away
  37. 2.781 km S of Unalaska, Alaska · 2942 days ago · 28 km deep · 22 km away
  38. 1.863 km SW of Unalaska, Alaska · 2941 days ago · 13 km deep · 69 km away
  39. 2.186 km E of Nikolski, Alaska · 2941 days ago · 48 km deep · 57 km away
  40. 2.777 km S of Unalaska, Alaska · 2941 days ago · 26 km deep · 27 km away
  41. 3.4Fox Islands, Aleutian Islands, Alaska · 2939 days ago · 83 km deep · 72 km away
  42. 1.572 km SE of Unalaska, Alaska · 2936 days ago · 12 km deep · 85 km away
  43. 3.7111 km SSW of Unalaska, Alaska · 2936 days ago · 31 km deep · 28 km away
  44. 1.920 km WSW of Dutch Harbor, Alaska · 2936 days ago · 6 km deep · 100 km away
  45. 1.7109 km SSE of Unalaska, Alaska · 2934 days ago · 23 km deep · 74 km away
  46. 1.8158 km ESE of Nikolski, Alaska · 2933 days ago · 25 km deep · 79 km away
  47. 2.175 km SSE of Akutan, Alaska · 2933 days ago · 42 km deep · 98 km away
  48. 1.827 km SSE of Unalaska, Alaska · 2931 days ago · 68 km deep · 78 km away
  49. 2.1175 km SSE of Unalaska, Alaska · 2929 days ago · 13 km deep · 99 km away
  50. 1.532 km ESE of Unalaska, Alaska · 2928 days ago · 37 km deep · 96 km away
  51. 1.6Fox Islands, Aleutian Islands, Alaska · 2927 days ago · 103 km deep · 97 km away
  52. 1.877 km SSW of Unalaska, Alaska · 2927 days ago · 44 km deep · 27 km away
  53. 2.111 km SSE of Unalaska, Alaska · 2926 days ago · 85 km deep · 95 km away
  54. 1.656 km SW of Unalaska, Alaska · 2924 days ago · 15 km deep · 68 km away
  55. 1.879 km S of Unalaska, Alaska · 2923 days ago · 23 km deep · 25 km away
  56. 2.0103 km E of Nikolski, Alaska · 2923 days ago · 36 km deep · 40 km away
  57. 2.391 km E of Nikolski, Alaska · 2923 days ago · 38 km deep · 53 km away
  58. 2.592 km SSW of Unalaska, Alaska · 2921 days ago · 44 km deep · 38 km away
  59. 2.471 km SW of Unalaska, Alaska · 2920 days ago · 13 km deep · 58 km away
  60. 2.953 km ESE of Nikolski, Alaska · 2919 days ago · 43 km deep · 96 km away

The first 60 of 74.

Before

  1. 2.593 km SSW of Unalaska, Alaska · 2962 days ago · 29 km deep · 27 km away
  2. 1.891 km SSW of Unalaska, Alaska · 2967 days ago · 30 km deep · 23 km away
  3. 2.762 km SSW of Unalaska, Alaska · 2968 days ago · 57 km deep · 43 km away
  4. 1.539 km WSW of Dutch Harbor, Alaska · 2972 days ago · 5 km deep · 97 km away
  5. 2.576 km S of Akutan, Alaska · 2974 days ago · 24 km deep · 93 km away
  6. 1.569 km SE of Unalaska, Alaska · 2974 days ago · 21 km deep · 88 km away
  7. 1.991 km SSE of Unalaska, Alaska · 2974 days ago · 13 km deep · 36 km away
  8. 2.073 km SSW of Unalaska, Alaska · 2975 days ago · 82 km deep · 43 km away
  9. 1.868 km SSW of Unalaska, Alaska · 2977 days ago · 64 km deep · 36 km away
  10. 1.691 km SSW of Unalaska, Alaska · 2978 days ago · 47 km deep · 41 km away
  11. 2.636 km ESE of Unalaska, Alaska · 2978 days ago · 64 km deep · 99 km away
  12. 2.291 km SE of Unalaska, Alaska · 2979 days ago · 10 km deep · 86 km away
  13. 2.052 km SW of Unalaska, Alaska · 2979 days ago · 67 km deep · 64 km away
  14. 2.682 km S of Unalaska, Alaska · 2979 days ago · 26 km deep · 22 km away
  15. 2.5101 km E of Nikolski, Alaska · 2980 days ago · 35 km deep · 47 km away
  16. 3.3152 km ESE of Nikolski, Alaska · 2980 days ago · 10 km deep · 54 km away
  17. 4.4136 km ESE of Nikolski, Alaska · 2984 days ago · 10 km deep · 37 km away
  18. 2.468 km SSW of Unalaska, Alaska · 2986 days ago · 38 km deep · 36 km away
  19. 2.369 km SE of Unalaska, Alaska · 2986 days ago · 13 km deep · 76 km away
  20. 1.782 km SW of Unalaska, Alaska · 2987 days ago · 13 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018ar10fo9 (also filed as ak20138332). Read Thu, Oct 1, 2026, 2:38 AM UTC.