Alaska earthquakes

M2.2 earthquake 52 km S of Ugashik, Alaska

A magnitude 2.2 earthquake struck 52 km S of Ugashik, Alaska on Sun, Sep 16, 2018, 1:41 AM AKDT (09:41 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M2.8 65 km SSE of Ugashik, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.2 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2018-09-16 09:41:40 UTC
Depth
5.9 km (3.7 mi), shallow
Epicenter
57.054° N, 157.567° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.2ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
2.2ML, local (Richter)AACSEPreliminary

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
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 25 in the 30 days before it.

After

  1. 2.165 km S of Ugashik, Alaska · 2938 days ago · 84 km deep · 15 km away
  2. 1.941 km ENE of Ugashik, Alaska · 2937 days ago · 129 km deep · 84 km away
  3. 1.718 km S of Ugashik, Alaska · 2936 days ago · 120 km deep · 34 km away
  4. 2.051 km ESE of Port Heiden, Alaska · 2931 days ago · 84 km deep · 36 km away
  5. 1.756 km SE of Ugashik, Alaska · 2931 days ago · 87 km deep · 58 km away
  6. 2.178 km SE of Ugashik, Alaska · 2928 days ago · 1 km deep · 71 km away
  7. 1.849 km E of Port Heiden, Alaska · 2926 days ago · 4 km deep · 18 km away
  8. 2.564 km SE of Ugashik, Alaska · 2924 days ago · 84 km deep · 63 km away
  9. 2.165 km ENE of Chignik, Alaska · 2918 days ago · 58 km deep · 64 km away
  10. 2.186 km SSE of Ugashik, Alaska · 2916 days ago · 75 km deep · 50 km away
  11. 2.1116 km ENE of Chignik, Alaska · 2914 days ago · 81 km deep · 86 km away
  12. 2.546 km E of Port Heiden, Alaska · 2910 days ago · 8 km deep · 20 km away
  13. 1.962 km SE of Ugashik, Alaska · 2909 days ago · 10 km deep · 46 km away
  14. 2.351 km SSW of Ugashik, Alaska · 2908 days ago · 7 km deep · 1 km away
  15. 2.459 km E of Chignik, Alaska · 2907 days ago · 72 km deep · 73 km away
  16. 2.348 km ENE of Port Heiden, Alaska · 2907 days ago · 3 km deep · 18 km away
  17. 2.142 km E of Port Heiden, Alaska · 2907 days ago · 106 km deep · 23 km away
  18. 2.865 km SSE of Ugashik, Alaska · 2906 days ago · 82 km deep · 38 km away
  19. 2.665 km E of Chignik, Alaska · 2905 days ago · 56 km deep · 73 km away
  20. 2.492 km ENE of Chignik, Alaska · 2904 days ago · 53 km deep · 57 km away
  21. 2.149 km SSE of Ugashik, Alaska · 2903 days ago · 103 km deep · 36 km away
  22. 2.074 km SE of Ugashik, Alaska · 2899 days ago · 73 km deep · 67 km away
  23. 2.298 km SSE of Ugashik, Alaska · 2899 days ago · 76 km deep · 65 km away
  24. 2.277 km ENE of Chignik, Alaska · 2892 days ago · 73 km deep · 49 km away
  25. 2.4115 km E of Chignik, Alaska · 2891 days ago · 77 km deep · 88 km away
  26. 2.759 km E of Ugashik, Alaska · 2887 days ago · 105 km deep · 81 km away
  27. 1.869 km E of Ugashik, Alaska · 2885 days ago · 109 km deep · 99 km away
  28. 2.052 km ENE of Port Heiden, Alaska · 2884 days ago · 16 km deep · 14 km away

Before

  1. 1.549 km SE of Ugashik, Alaska · 2941 days ago · 106 km deep · 53 km away
  2. 1.9124 km SE of Ugashik, Alaska · 2941 days ago · 81 km deep · 99 km away
  3. 2.425 km NNE of Pilot Point, Alaska · 2942 days ago · 178 km deep · 82 km away
  4. 2.351 km SSW of Ugashik, Alaska · 2942 days ago · 8 km deep · 1 km away
  5. 2.241 km E of Chignik, Alaska · 2943 days ago · 62 km deep · 80 km away
  6. 2.037 km SE of Ugashik, Alaska · 2943 days ago · 99 km deep · 40 km away
  7. 2.060 km E of Port Heiden, Alaska · 2947 days ago · 4 km deep · 11 km away
  8. 1.954 km ENE of Ugashik, Alaska · 2948 days ago · 134 km deep · 95 km away
  9. 2.218 km N of Chignik, Alaska · 2948 days ago · 86 km deep · 83 km away
  10. 1.753 km E of Ugashik, Alaska · 2949 days ago · 110 km deep · 81 km away
  11. 3.156 km ENE of Ugashik, Alaska · 2949 days ago · 132 km deep · 94 km away
  12. 1.939 km ESE of Ugashik, Alaska · 2952 days ago · 96 km deep · 54 km away
  13. 1.986 km ESE of Ugashik, Alaska · 2952 days ago · 72 km deep · 85 km away
  14. 1.926 km N of Pilot Point, Alaska · 2953 days ago · 186 km deep · 83 km away
  15. 2.054 km ESE of Chignik, Alaska · 2954 days ago · 40 km deep · 97 km away
  16. 1.731 km ENE of Chignik, Alaska · 2955 days ago · 67 km deep · 78 km away
  17. 2.155 km ENE of Ugashik, Alaska · 2955 days ago · 127 km deep · 94 km away
  18. 2.744 km ESE of Chignik, Alaska · 2955 days ago · 54 km deep · 96 km away
  19. 2.458 km E of Port Heiden, Alaska · 2956 days ago · 93 km deep · 12 km away
  20. 1.824 km SE of Ugashik, Alaska · 2956 days ago · 109 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak018bwhsnsu (also filed as ak20255285, aacse018bwhsnsu). Read Sat, Oct 3, 2026, 6:53 AM UTC.