Alaska earthquakes

M1.6 earthquake 143 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 143 km W of Adak, Alaska on Wed, Aug 15, 2018, 11:16 AM HADT (20:16 UTC), 15 km (10 mi) below the surface.

A larger quake followed: M6.5 108 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
1.6 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2018-08-15 20:16:17 UTC
Depth
15.3 km (9.5 mi), shallow
Epicenter
51.669° N, 178.688° 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.

Location uncertainty
About 4.2 km horizontally, 2.8 km in depth
Depth from
From location
Station coverage gap
335°, poorly surrounded by stations
Stations used
5

Nearby

Within 100 km, magnitude 1.5 and up: at least 199 in the 60 days after this one and 106 in the 30 days before it.

After

  1. 2.8123 km WSW of Adak, Alaska · 2969 days ago · 35 km deep · 56 km away
  2. 1.7206 km WSW of Adak, Alaska · 2969 days ago · 25 km deep · 66 km away
  3. 6.5108 km WSW of Adak, Alaska · 2969 days ago · 34 km deep · 53 km away · felt by 8 · tsunami flag
  4. 4.2125 km SW of Adak, Alaska · 2969 days ago · 31 km deep · 88 km away
  5. 2.9121 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 76 km away
  6. 4.3108 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 64 km away
  7. 2.198 km WSW of Adak, Alaska · 2969 days ago · 68 km deep · 58 km away
  8. 2.8123 km SW of Adak, Alaska · 2969 days ago · 23 km deep · 78 km away
  9. 2.397 km SW of Adak, Alaska · 2969 days ago · 33 km deep · 76 km away
  10. 2.1106 km SW of Adak, Alaska · 2969 days ago · 20 km deep · 78 km away
  11. 2.1111 km SW of Adak, Alaska · 2969 days ago · 43 km deep · 76 km away
  12. 2.7103 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 87 km away
  13. 2.8110 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 81 km away
  14. 1.9105 km SW of Adak, Alaska · 2969 days ago · 34 km deep · 77 km away
  15. 2.3113 km SW of Adak, Alaska · 2969 days ago · 25 km deep · 79 km away
  16. 2.2113 km SW of Adak, Alaska · 2969 days ago · 38 km deep · 73 km away
  17. 2.6102 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 89 km away
  18. 2.1112 km SW of Adak, Alaska · 2969 days ago · 51 km deep · 79 km away
  19. 1.7110 km SW of Adak, Alaska · 2969 days ago · 22 km deep · 68 km away
  20. 1.9111 km SW of Adak, Alaska · 2969 days ago · 44 km deep · 75 km away
  21. 1.899 km SW of Adak, Alaska · 2969 days ago · 53 km deep · 77 km away
  22. 1.7Andreanof Islands, Aleutian Islands, Alaska · 2969 days ago · 19 km deep · 19 km away
  23. 1.9110 km SW of Adak, Alaska · 2969 days ago · 20 km deep · 76 km away
  24. 2.3Andreanof Islands, Aleutian Islands, Alaska · 2969 days ago · 45 km deep · 77 km away
  25. 1.7115 km SW of Adak, Alaska · 2969 days ago · 36 km deep · 71 km away
  26. 2.1110 km SW of Adak, Alaska · 2969 days ago · 28 km deep · 83 km away
  27. 1.8115 km SW of Adak, Alaska · 2969 days ago · 30 km deep · 68 km away
  28. 1.6106 km SW of Adak, Alaska · 2969 days ago · 24 km deep · 74 km away
  29. 1.7118 km WSW of Adak, Alaska · 2969 days ago · 38 km deep · 59 km away
  30. 1.7116 km SW of Adak, Alaska · 2969 days ago · 25 km deep · 71 km away
  31. 3.8114 km SW of Adak, Alaska · 2969 days ago · 30 km deep · 77 km away
  32. 3.0118 km SW of Adak, Alaska · 2969 days ago · 32 km deep · 65 km away
  33. 1.6113 km SW of Adak, Alaska · 2969 days ago · 26 km deep · 73 km away
  34. 1.7111 km SW of Adak, Alaska · 2969 days ago · 14 km deep · 76 km away
  35. 2.1111 km SW of Adak, Alaska · 2969 days ago · 49 km deep · 69 km away
  36. 1.6110 km SW of Adak, Alaska · 2969 days ago · 50 km deep · 69 km away
  37. 1.598 km SW of Adak, Alaska · 2969 days ago · 22 km deep · 80 km away
  38. 1.7104 km SW of Adak, Alaska · 2969 days ago · 21 km deep · 78 km away
  39. 1.7111 km SW of Adak, Alaska · 2969 days ago · 45 km deep · 67 km away
  40. 1.8117 km SW of Adak, Alaska · 2969 days ago · 33 km deep · 67 km away
  41. 1.5100 km SW of Adak, Alaska · 2969 days ago · 44 km deep · 76 km away
  42. 2.2114 km SW of Adak, Alaska · 2969 days ago · 35 km deep · 69 km away
  43. 2.5107 km SW of Adak, Alaska · 2969 days ago · 49 km deep · 70 km away
  44. 1.6101 km SW of Adak, Alaska · 2969 days ago · 25 km deep · 81 km away
  45. 1.696 km SW of Adak, Alaska · 2969 days ago · 37 km deep · 81 km away
  46. 2.2111 km SW of Adak, Alaska · 2969 days ago · 10 km deep · 87 km away
  47. 1.798 km SW of Adak, Alaska · 2969 days ago · 46 km deep · 80 km away
  48. 1.9116 km SW of Adak, Alaska · 2969 days ago · 26 km deep · 78 km away
  49. 1.7120 km SW of Adak, Alaska · 2969 days ago · 21 km deep · 78 km away
  50. 1.8119 km SW of Adak, Alaska · 2969 days ago · 44 km deep · 67 km away
  51. 2.199 km SW of Adak, Alaska · 2969 days ago · 49 km deep · 77 km away
  52. 2.1142 km W of Adak, Alaska · 2969 days ago · 12 km deep · 15 km away
  53. 1.7107 km WSW of Adak, Alaska · 2969 days ago · 60 km deep · 54 km away
  54. 2.6100 km SW of Adak, Alaska · 2969 days ago · 39 km deep · 82 km away
  55. 1.5104 km SW of Adak, Alaska · 2969 days ago · 48 km deep · 65 km away
  56. 1.6100 km SW of Adak, Alaska · 2969 days ago · 51 km deep · 75 km away
  57. 1.5103 km SW of Adak, Alaska · 2969 days ago · 24 km deep · 76 km away
  58. 2.1117 km SW of Adak, Alaska · 2969 days ago · 28 km deep · 69 km away
  59. 2.1112 km SW of Adak, Alaska · 2969 days ago · 38 km deep · 75 km away
  60. 2.1203 km WSW of Adak, Alaska · 2969 days ago · 8 km deep · 78 km away

The first 60 of at least 199.

Before

  1. 2.5214 km W of Adak, Alaska · 2969 days ago · 187 km deep · 88 km away
  2. 1.5110 km WSW of Adak, Alaska · 2969 days ago · 39 km deep · 47 km away
  3. 1.5129 km W of Adak, Alaska · 2969 days ago · 20 km deep · 17 km away
  4. 1.5113 km SW of Adak, Alaska · 2969 days ago · 42 km deep · 71 km away
  5. 1.9214 km W of Adak, Alaska · 2970 days ago · 106 km deep · 75 km away
  6. 2.1131 km WSW of Adak, Alaska · 2971 days ago · 13 km deep · 15 km away
  7. 1.9107 km SW of Adak, Alaska · 2971 days ago · 45 km deep · 93 km away
  8. 1.6126 km WSW of Adak, Alaska · 2971 days ago · 16 km deep · 18 km away
  9. 2.293 km WSW of Adak, Alaska · 2971 days ago · 23 km deep · 59 km away
  10. 1.882 km WSW of Adak, Alaska · 2971 days ago · 69 km deep · 63 km away
  11. 1.5123 km WSW of Adak, Alaska · 2971 days ago · 13 km deep · 22 km away
  12. 4.0163 km SW of Adak, Alaska · 2971 days ago · 10 km deep · 87 km away
  13. 2.078 km SW of Adak, Alaska · 2971 days ago · 41 km deep · 88 km away
  14. 1.8200 km WSW of Adak, Alaska · 2971 days ago · 26 km deep · 71 km away
  15. 2.0150 km WSW of Adak, Alaska · 2972 days ago · 61 km deep · 50 km away
  16. 1.9124 km WSW of Adak, Alaska · 2972 days ago · 13 km deep · 20 km away
  17. 1.893 km WSW of Adak, Alaska · 2972 days ago · 30 km deep · 53 km away
  18. 3.3126 km WSW of Adak, Alaska · 2972 days ago · 18 km deep · 17 km away
  19. 2.2198 km WSW of Adak, Alaska · 2973 days ago · 23 km deep · 60 km away
  20. 1.6115 km WSW of Adak, Alaska · 2973 days ago · 49 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av61760906. Read Thu, Oct 1, 2026, 11:02 PM UTC.