Alaska earthquakes

M3.1 earthquake 140 km SW of Nikolski, Alaska

A magnitude 3.1 earthquake struck 140 km SW of Nikolski, Alaska on Sun, Dec 17, 2023, 9:29 AM HAST (19:29 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.6 147 km WSW of Nikolski, 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
3.1 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-12-17 19:29:44 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
52.149° N, 170.480° 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
3.1ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
3.0ML, local (Richter)Alaska Earthquake CenterPreliminary

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 6.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
215°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 22 in the 30 days before it.

After

  1. 2.8139 km SW of Nikolski, Alaska · 1020 days ago · 35 km deep · 1 km away
  2. 2.244 km SW of Nikolski, Alaska · 1020 days ago · 41 km deep · 96 km away
  3. 2.988 km SW of Nikolski, Alaska · 1017 days ago · 35 km deep · 54 km away
  4. 3.9123 km SSW of Nikolski, Alaska · 1011 days ago · 10 km deep · 68 km away
  5. 2.9108 km SSW of Nikolski, Alaska · 1011 days ago · 15 km deep · 59 km away
  6. 2.8132 km SW of Nikolski, Alaska · 1008 days ago · 35 km deep · 10 km away
  7. 4.1130 km WSW of Nikolski, Alaska · 1004 days ago · 52 km deep · 23 km away
  8. 3.2105 km SSW of Nikolski, Alaska · 1000 days ago · 10 km deep · 79 km away
  9. 3.0176 km WSW of Nikolski, Alaska · 998 days ago · 35 km deep · 48 km away
  10. 3.0133 km SW of Nikolski, Alaska · 997 days ago · 35 km deep · 10 km away
  11. 3.493 km W of Nikolski, Alaska · 996 days ago · 144 km deep · 82 km away
  12. 3.0162 km E of Atka, Alaska · 995 days ago · 75 km deep · 92 km away
  13. 2.691 km SW of Nikolski, Alaska · 994 days ago · 61 km deep · 50 km away
  14. 3.194 km SW of Nikolski, Alaska · 994 days ago · 35 km deep · 46 km away
  15. 3.0217 km SW of Nikolski, Alaska · 992 days ago · 10 km deep · 77 km away
  16. 3.1215 km ESE of Atka, Alaska · 992 days ago · 35 km deep · 77 km away
  17. 3.1162 km WSW of Nikolski, Alaska · 992 days ago · 35 km deep · 33 km away
  18. 2.267 km SSW of Nikolski, Alaska · 991 days ago · 4 km deep · 83 km away
  19. 3.0179 km ESE of Atka, Alaska · 991 days ago · 35 km deep · 86 km away
  20. 2.6165 km E of Atka, Alaska · 991 days ago · 10 km deep · 89 km away
  21. 3.0182 km WSW of Nikolski, Alaska · 988 days ago · 7 km deep · 75 km away
  22. 3.3144 km W of Nikolski, Alaska · 983 days ago · 179 km deep · 75 km away
  23. 2.6187 km E of Atka, Alaska · 983 days ago · 35 km deep · 67 km away
  24. 1.850 km WSW of Nikolski, Alaska · 976 days ago · 25 km deep · 91 km away
  25. 4.4139 km WSW of Nikolski, Alaska · 973 days ago · 46 km deep · 16 km away
  26. 3.170 km SW of Nikolski, Alaska · 972 days ago · 24 km deep · 70 km away
  27. 4.073 km SW of Nikolski, Alaska · 970 days ago · 52 km deep · 69 km away
  28. 3.7148 km WSW of Nikolski, Alaska · 967 days ago · 54 km deep · 18 km away
  29. 3.6120 km SSW of Nikolski, Alaska · 966 days ago · 10 km deep · 52 km away
  30. 4.3183 km SSW of Nikolski, Alaska · 964 days ago · 10 km deep · 70 km away
  31. 4.6147 km WSW of Nikolski, Alaska · 964 days ago · 50 km deep · 31 km away
  32. 1.765 km SW of Nikolski, Alaska · 964 days ago · 7 km deep · 75 km away

Before

  1. 2.9112 km SW of Nikolski, Alaska · 1020 days ago · 35 km deep · 35 km away
  2. 3.5129 km SW of Nikolski, Alaska · 1021 days ago · 49 km deep · 17 km away
  3. 3.189 km SSW of Nikolski, Alaska · 1022 days ago · 10 km deep · 81 km away
  4. 2.073 km WSW of Nikolski, Alaska · 1023 days ago · 6 km deep · 79 km away
  5. 2.370 km WSW of Nikolski, Alaska · 1024 days ago · 9 km deep · 84 km away
  6. 2.269 km WSW of Nikolski, Alaska · 1024 days ago · 10 km deep · 85 km away
  7. 3.3164 km WSW of Nikolski, Alaska · 1026 days ago · 73 km deep · 40 km away
  8. 3.8190 km E of Atka, Alaska · 1027 days ago · 35 km deep · 69 km away
  9. 2.9163 km WSW of Nikolski, Alaska · 1032 days ago · 96 km deep · 72 km away
  10. 3.0200 km SW of Nikolski, Alaska · 1032 days ago · 33 km deep · 72 km away
  11. 3.3158 km WSW of Nikolski, Alaska · 1032 days ago · 95 km deep · 63 km away
  12. 3.3194 km SW of Nikolski, Alaska · 1032 days ago · 20 km deep · 67 km away
  13. 3.5187 km SW of Nikolski, Alaska · 1033 days ago · 10 km deep · 54 km away
  14. 4.8186 km SW of Nikolski, Alaska · 1033 days ago · 31 km deep · 49 km away
  15. 3.673 km W of Nikolski, Alaska · 1037 days ago · 221 km deep · 96 km away
  16. 3.8141 km SW of Nikolski, Alaska · 1039 days ago · 10 km deep · 14 km away
  17. 3.0172 km W of Nikolski, Alaska · 1040 days ago · 35 km deep · 99 km away
  18. 3.2187 km SW of Nikolski, Alaska · 1043 days ago · 35 km deep · 48 km away
  19. 4.0176 km SW of Nikolski, Alaska · 1043 days ago · 46 km deep · 36 km away
  20. 4.5186 km SW of Nikolski, Alaska · 1043 days ago · 28 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000m0gr (also filed as ak023g4t4dix). Read Fri, Oct 2, 2026, 8:45 PM UTC.