Alaska earthquakes

M2.1 earthquake 73 km SE of Adak, Alaska

A magnitude 2.1 earthquake struck 73 km SE of Adak, Alaska on Sun, Aug 19, 2018, 11:11 PM HADT (08:11 UTC), 21 km (13 mi) below the surface.

A larger quake followed: M4.7 91 km SSE of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.1 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-08-20 08:11:43 UTC
Depth
21.1 km (13.1 mi), shallow
Epicenter
51.494° N, 175.763° 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
13

Nearby

Within 100 km, magnitude 1.5 and up: 160 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 1.947 km SE of Adak, Alaska · 2965 days ago · 32 km deep · 28 km away
  2. 1.938 km S of Adak, Alaska · 2965 days ago · 46 km deep · 62 km away
  3. 2.739 km S of Adak, Alaska · 2965 days ago · 35 km deep · 62 km away
  4. 2.851 km SSE of Adak, Alaska · 2965 days ago · 35 km deep · 45 km away
  5. 2.349 km SW of Adak, Alaska · 2965 days ago · 39 km deep · 96 km away
  6. 1.911 km ENE of Adak, Alaska · 2961 days ago · 74 km deep · 70 km away
  7. 1.863 km SSW of Adak, Alaska · 2961 days ago · 49 km deep · 92 km away
  8. 2.19 km ENE of Adak, Alaska · 2960 days ago · 74 km deep · 69 km away
  9. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2960 days ago · 4 km deep · 93 km away
  10. 2.458 km SE of Adak, Alaska · 2960 days ago · 24 km deep · 28 km away
  11. 2.0Andreanof Islands, Aleutian Islands, Alaska · 2960 days ago · 26 km deep · 62 km away
  12. 2.146 km SW of Adak, Alaska · 2960 days ago · 38 km deep · 92 km away
  13. 2.073 km ESE of Adak, Alaska · 2959 days ago · 47 km deep · 5 km away
  14. 1.852 km SE of Adak, Alaska · 2959 days ago · 46 km deep · 21 km away
  15. 4.0108 km SSE of Adak, Alaska · 2959 days ago · 29 km deep · 63 km away
  16. 2.5102 km SSE of Adak, Alaska · 2958 days ago · 34 km deep · 60 km away
  17. 2.3109 km SSE of Adak, Alaska · 2958 days ago · 33 km deep · 65 km away
  18. 4.791 km SSE of Adak, Alaska · 2956 days ago · 38 km deep · 50 km away
  19. 3.298 km SSE of Adak, Alaska · 2956 days ago · 23 km deep · 55 km away
  20. 2.889 km SSE of Adak, Alaska · 2956 days ago · 3 km deep · 57 km away
  21. 3.998 km SSE of Adak, Alaska · 2956 days ago · 33 km deep · 58 km away
  22. 2.683 km SSE of Adak, Alaska · 2956 days ago · 26 km deep · 41 km away
  23. 2.987 km SSE of Adak, Alaska · 2956 days ago · 7 km deep · 52 km away
  24. 3.6107 km SSE of Adak, Alaska · 2956 days ago · 30 km deep · 60 km away
  25. 3.8105 km SSE of Adak, Alaska · 2956 days ago · 28 km deep · 58 km away
  26. 4.0113 km SSE of Adak, Alaska · 2956 days ago · 27 km deep · 66 km away
  27. 3.9109 km SSE of Adak, Alaska · 2956 days ago · 35 km deep · 64 km away
  28. 2.499 km SSE of Adak, Alaska · 2956 days ago · 26 km deep · 57 km away
  29. 2.885 km SSE of Adak, Alaska · 2956 days ago · 10 km deep · 43 km away
  30. 2.594 km SSE of Adak, Alaska · 2955 days ago · 18 km deep · 52 km away
  31. 2.695 km SSE of Adak, Alaska · 2955 days ago · 12 km deep · 58 km away
  32. 3.335 km SE of Adak, Alaska · 2955 days ago · 38 km deep · 41 km away
  33. 3.3110 km SSE of Adak, Alaska · 2955 days ago · 32 km deep · 61 km away
  34. 2.7101 km SSE of Adak, Alaska · 2955 days ago · 33 km deep · 63 km away
  35. 3.2102 km SSE of Adak, Alaska · 2955 days ago · 14 km deep · 57 km away
  36. 2.786 km SSE of Adak, Alaska · 2955 days ago · 8 km deep · 41 km away
  37. 2.645 km ENE of Adak, Alaska · 2955 days ago · 8 km deep · 68 km away
  38. 2.6106 km SSE of Adak, Alaska · 2955 days ago · 30 km deep · 59 km away
  39. 2.798 km SSE of Adak, Alaska · 2954 days ago · 19 km deep · 52 km away
  40. 1.654 km SE of Adak, Alaska · 2954 days ago · 42 km deep · 23 km away
  41. 2.188 km SSE of Adak, Alaska · 2954 days ago · 3 km deep · 51 km away
  42. 2.345 km SSW of Atka, Alaska · 2954 days ago · 46 km deep · 94 km away
  43. 1.653 km SE of Adak, Alaska · 2954 days ago · 47 km deep · 29 km away
  44. 2.6106 km SSE of Adak, Alaska · 2954 days ago · 35 km deep · 58 km away
  45. 4.096 km SSE of Adak, Alaska · 2954 days ago · 10 km deep · 54 km away
  46. 2.471 km NE of Adak, Alaska · 2953 days ago · 240 km deep · 93 km away
  47. 1.765 km SSW of Adak, Alaska · 2953 days ago · 36 km deep · 97 km away
  48. 1.970 km SSW of Adak, Alaska · 2953 days ago · 40 km deep · 97 km away
  49. 1.925 km SSW of Adak, Alaska · 2953 days ago · 34 km deep · 76 km away
  50. 2.489 km SSE of Adak, Alaska · 2953 days ago · 34 km deep · 50 km away
  51. 1.827 km SE of Adak, Alaska · 2951 days ago · 55 km deep · 46 km away
  52. 2.051 km SSE of Adak, Alaska · 2951 days ago · 49 km deep · 34 km away
  53. 3.360 km SSE of Adak, Alaska · 2950 days ago · 35 km deep · 43 km away
  54. 2.970 km E of Adak, Alaska · 2950 days ago · 33 km deep · 34 km away
  55. 2.039 km S of Adak, Alaska · 2949 days ago · 34 km deep · 58 km away
  56. 1.8Andreanof Islands, Aleutian Islands, Alaska · 2949 days ago · 37 km deep · 64 km away
  57. 2.360 km E of Adak, Alaska · 2949 days ago · 38 km deep · 47 km away
  58. 2.264 km SE of Adak, Alaska · 2949 days ago · 24 km deep · 12 km away
  59. 1.735 km SW of Atka, Alaska · 2948 days ago · 63 km deep · 98 km away
  60. 2.771 km ENE of Adak, Alaska · 2948 days ago · 178 km deep · 61 km away

The first 60 of 160.

Before

  1. 2.114 km ENE of Adak, Alaska · 2965 days ago · 98 km deep · 65 km away
  2. 2.040 km SSE of Adak, Alaska · 2966 days ago · 52 km deep · 47 km away
  3. 1.851 km S of Adak, Alaska · 2967 days ago · 33 km deep · 59 km away
  4. 1.981 km SW of Atka, Alaska · 2968 days ago · 34 km deep · 51 km away
  5. 2.2109 km SSW of Atka, Alaska · 2969 days ago · 49 km deep · 60 km away
  6. 1.561 km S of Adak, Alaska · 2969 days ago · 26 km deep · 65 km away
  7. 2.153 km SSE of Adak, Alaska · 2969 days ago · 21 km deep · 36 km away
  8. 2.476 km SE of Adak, Alaska · 2970 days ago · 19 km deep · 5 km away
  9. 2.381 km WSW of Atka, Alaska · 2970 days ago · 84 km deep · 67 km away
  10. 1.860 km SSW of Adak, Alaska · 2970 days ago · 43 km deep · 91 km away
  11. 1.87 km ENE of Adak, Alaska · 2970 days ago · 69 km deep · 70 km away
  12. 2.250 km SE of Adak, Alaska · 2970 days ago · 21 km deep · 27 km away
  13. 1.857 km SSE of Adak, Alaska · 2970 days ago · 25 km deep · 43 km away
  14. 2.243 km NNE of Adak, Alaska · 2971 days ago · 205 km deep · 98 km away
  15. 2.833 km S of Adak, Alaska · 2971 days ago · 35 km deep · 65 km away
  16. 4.244 km SW of Adak, Alaska · 2972 days ago · 72 km deep · 91 km away
  17. 2.4104 km ESE of Adak, Alaska · 2972 days ago · 31 km deep · 36 km away
  18. 2.153 km SSE of Adak, Alaska · 2973 days ago · 23 km deep · 41 km away
  19. 2.668 km W of Atka, Alaska · 2973 days ago · 208 km deep · 99 km away
  20. 2.255 km SSE of Adak, Alaska · 2973 days ago · 23 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018antifm4 (also filed as ak20237878). Read Fri, Oct 2, 2026, 3:10 PM UTC.