Alaska earthquakes

M2.1 earthquake 133 km S of Atka, Alaska

A magnitude 2.1 earthquake struck 133 km S of Atka, Alaska on Wed, Apr 4, 2018, 2:21 PM HADT (23:21 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.0 73 km SSE of Atka, 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
2.1 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-04-04 23:21:36 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
51.005° N, 173.950° 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: 22 in the 60 days after this one and 26 in the 30 days before it.

After

  1. 1.882 km SW of Atka, Alaska · 3102 days ago · 15 km deep · 93 km away
  2. 2.944 km SE of Atka, Alaska · 3099 days ago · 153 km deep · 97 km away
  3. 3.3103 km SE of Atka, Alaska · 3099 days ago · 16 km deep · 93 km away
  4. 2.347 km SSE of Atka, Alaska · 3096 days ago · 39 km deep · 86 km away
  5. 3.4105 km S of Atka, Alaska · 3094 days ago · 21 km deep · 46 km away
  6. 2.791 km SSW of Atka, Alaska · 3094 days ago · 12 km deep · 88 km away
  7. 3.7133 km SSE of Atka, Alaska · 3094 days ago · 32 km deep · 41 km away
  8. 2.6113 km SE of Atka, Alaska · 3076 days ago · 26 km deep · 79 km away
  9. 3.3161 km SSW of Atka, Alaska · 3076 days ago · 10 km deep · 67 km away
  10. 2.149 km SSW of Atka, Alaska · 3076 days ago · 23 km deep · 95 km away
  11. 4.073 km SSE of Atka, Alaska · 3073 days ago · 41 km deep · 65 km away
  12. 3.6111 km S of Atka, Alaska · 3062 days ago · 8 km deep · 26 km away
  13. 3.1193 km SSE of Atka, Alaska · 3062 days ago · 10 km deep · 85 km away
  14. 2.466 km SSE of Atka, Alaska · 3061 days ago · 27 km deep · 70 km away
  15. 2.267 km SSE of Atka, Alaska · 3061 days ago · 20 km deep · 67 km away
  16. 2.575 km SW of Atka, Alaska · 3061 days ago · 76 km deep · 100 km away
  17. 3.135 km SSE of Atka, Alaska · 3061 days ago · 195 km deep · 98 km away
  18. 1.945 km SSW of Atka, Alaska · 3053 days ago · 45 km deep · 93 km away
  19. 3.362 km SW of Atka, Alaska · 3053 days ago · 16 km deep · 100 km away
  20. 2.4100 km S of Atka, Alaska · 3045 days ago · 26 km deep · 36 km away
  21. 2.5168 km SE of Adak, Alaska · 3042 days ago · 10 km deep · 86 km away
  22. 2.2157 km SSW of Atka, Alaska · 3042 days ago · 10 km deep · 70 km away

Before

  1. 1.646 km SSW of Atka, Alaska · 3102 days ago · 54 km deep · 92 km away
  2. 1.653 km SSW of Atka, Alaska · 3110 days ago · 23 km deep · 90 km away
  3. 3.0113 km SE of Atka, Alaska · 3110 days ago · 35 km deep · 82 km away
  4. 3.0Andreanof Islands, Aleutian Islands, Alaska · 3113 days ago · 23 km deep · 85 km away
  5. 2.4146 km SSW of Atka, Alaska · 3118 days ago · 23 km deep · 49 km away
  6. 1.763 km SSW of Atka, Alaska · 3118 days ago · 26 km deep · 95 km away
  7. 3.562 km SSW of Atka, Alaska · 3118 days ago · 55 km deep · 90 km away
  8. 2.178 km SSE of Atka, Alaska · 3119 days ago · 16 km deep · 60 km away
  9. 2.4103 km S of Atka, Alaska · 3120 days ago · 39 km deep · 37 km away
  10. 1.957 km SSE of Atka, Alaska · 3120 days ago · 34 km deep · 82 km away
  11. 2.1112 km S of Atka, Alaska · 3121 days ago · 17 km deep · 21 km away
  12. 3.7184 km S of Atka, Alaska · 3122 days ago · 25 km deep · 52 km away
  13. 2.444 km SSE of Atka, Alaska · 3122 days ago · 52 km deep · 92 km away
  14. 2.785 km SE of Atka, Alaska · 3122 days ago · 18 km deep · 71 km away
  15. 2.3190 km S of Atka, Alaska · 3124 days ago · 29 km deep · 59 km away
  16. 2.4184 km SSE of Atka, Alaska · 3124 days ago · 24 km deep · 62 km away
  17. 2.2132 km SSE of Atka, Alaska · 3124 days ago · 12 km deep · 16 km away
  18. 2.3100 km S of Atka, Alaska · 3125 days ago · 38 km deep · 39 km away
  19. 2.885 km SE of Atka, Alaska · 3126 days ago · 41 km deep · 83 km away
  20. 2.557 km S of Atka, Alaska · 3126 days ago · 40 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0184buc66a (also filed as ak19213647). Read Thu, Oct 1, 2026, 7:34 PM UTC.