Alaska earthquakes

M2.3 earthquake 179 km E of Atka, Alaska

A magnitude 2.3 earthquake struck 179 km E of Atka, Alaska on Thu, Apr 21, 2016, 2:15 AM HADT (11:15 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M4.3 176 km SW of Nikolski, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2016-04-21 11:15:14 UTC
Depth
41.7 km (25.9 mi), shallow
Epicenter
52.018° N, 171.595° 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: 46 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 3.6146 km ENE of Atka, Alaska · 3818 days ago · 100 km deep · 85 km away
  2. 2.3158 km E of Atka, Alaska · 3818 days ago · 60 km deep · 32 km away
  3. 4.2183 km SW of Nikolski, Alaska · 3816 days ago · 47 km deep · 34 km away
  4. 2.9162 km E of Atka, Alaska · 3815 days ago · 118 km deep · 39 km away
  5. 2.7177 km ESE of Atka, Alaska · 3815 days ago · 36 km deep · 19 km away
  6. 2.8165 km E of Atka, Alaska · 3815 days ago · 36 km deep · 22 km away
  7. 2.7183 km SW of Nikolski, Alaska · 3814 days ago · 31 km deep · 37 km away
  8. 3.6180 km WSW of Nikolski, Alaska · 3814 days ago · 36 km deep · 32 km away
  9. 2.7174 km WSW of Nikolski, Alaska · 3812 days ago · 60 km deep · 40 km away
  10. 2.5Fox Islands, Aleutian Islands, Alaska · 3811 days ago · 86 km deep · 66 km away
  11. 3.1178 km WSW of Nikolski, Alaska · 3810 days ago · 26 km deep · 34 km away
  12. 2.8181 km WSW of Nikolski, Alaska · 3808 days ago · 58 km deep · 31 km away
  13. 2.7203 km ESE of Atka, Alaska · 3808 days ago · 34 km deep · 38 km away
  14. 3.4167 km WSW of Nikolski, Alaska · 3806 days ago · 41 km deep · 46 km away
  15. 3.4185 km SW of Nikolski, Alaska · 3806 days ago · 23 km deep · 66 km away
  16. 2.4166 km E of Atka, Alaska · 3806 days ago · 26 km deep · 17 km away
  17. 2.7188 km E of Atka, Alaska · 3806 days ago · 39 km deep · 25 km away
  18. 2.7158 km ESE of Atka, Alaska · 3804 days ago · 13 km deep · 77 km away
  19. 4.3176 km SW of Nikolski, Alaska · 3804 days ago · 38 km deep · 45 km away
  20. 3.9189 km SW of Nikolski, Alaska · 3803 days ago · 33 km deep · 52 km away
  21. 2.6176 km SW of Nikolski, Alaska · 3803 days ago · 25 km deep · 54 km away
  22. 2.8178 km SW of Nikolski, Alaska · 3803 days ago · 41 km deep · 54 km away
  23. 2.7149 km E of Atka, Alaska · 3803 days ago · 119 km deep · 57 km away
  24. 2.8125 km SW of Nikolski, Alaska · 3802 days ago · 53 km deep · 92 km away
  25. 2.7169 km E of Atka, Alaska · 3802 days ago · 36 km deep · 23 km away
  26. 2.7149 km SW of Nikolski, Alaska · 3799 days ago · 24 km deep · 73 km away
  27. 2.5125 km WSW of Nikolski, Alaska · 3796 days ago · 35 km deep · 86 km away
  28. 3.4136 km SW of Nikolski, Alaska · 3794 days ago · 34 km deep · 82 km away
  29. 2.5125 km SW of Nikolski, Alaska · 3792 days ago · 55 km deep · 88 km away
  30. 2.5206 km ESE of Atka, Alaska · 3791 days ago · 26 km deep · 51 km away
  31. 2.8119 km E of Atka, Alaska · 3791 days ago · 123 km deep · 68 km away
  32. 2.4138 km WSW of Nikolski, Alaska · 3791 days ago · 61 km deep · 73 km away
  33. 2.3134 km WSW of Nikolski, Alaska · 3790 days ago · 15 km deep · 78 km away
  34. 2.6186 km W of Nikolski, Alaska · 3787 days ago · 152 km deep · 91 km away
  35. 2.6133 km WSW of Nikolski, Alaska · 3783 days ago · 26 km deep · 81 km away
  36. 2.4167 km WSW of Nikolski, Alaska · 3782 days ago · 90 km deep · 51 km away
  37. 2.2109 km ESE of Atka, Alaska · 3776 days ago · 7 km deep · 86 km away
  38. 3.3145 km WSW of Nikolski, Alaska · 3775 days ago · 57 km deep · 67 km away
  39. 2.7104 km E of Atka, Alaska · 3775 days ago · 7 km deep · 84 km away
  40. 2.3184 km E of Atka, Alaska · 3774 days ago · 3 km deep · 29 km away
  41. 4.1125 km WSW of Nikolski, Alaska · 3767 days ago · 55 km deep · 87 km away
  42. 2.5154 km ESE of Atka, Alaska · 3763 days ago · 5 km deep · 71 km away
  43. 2.8158 km E of Atka, Alaska · 3761 days ago · 49 km deep · 21 km away
  44. 3.6147 km ESE of Atka, Alaska · 3760 days ago · 31 km deep · 35 km away
  45. 2.5162 km E of Atka, Alaska · 3760 days ago · 26 km deep · 22 km away
  46. 3.7174 km ESE of Atka, Alaska · 3759 days ago · 35 km deep · 19 km away

Before

  1. 3.9150 km ENE of Atka, Alaska · 3829 days ago · 260 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak01655etvsf (also filed as ak13501348). Read Mon, Oct 5, 2026, 4:38 AM UTC.