Alaska earthquakes

M3.2 earthquake 123 km WSW of Nikolski, Alaska

A magnitude 3.2 earthquake struck 123 km WSW of Nikolski, Alaska on Fri, Mar 31, 2023, 11:25 AM HADT (20:25 UTC), 127 km (79 mi) below the surface.

A larger quake followed: M5.4 71 km WNW 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
3.2 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-03-31 20:25:16 UTC
Depth
127.1 km (79.0 mi), intermediate-depth
Epicenter
52.625° N, 170.617° 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
3.2ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.077 · 22 stations
2.8ML, 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 9.1 km horizontally, 6.1 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
187°, poorly surrounded by stations
Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.751 km W of Nikolski, Alaska · 1280 days ago · 10 km deep · 74 km away
  2. 3.5186 km SW of Nikolski, Alaska · 1278 days ago · 35 km deep · 80 km away
  3. 2.5129 km SW of Nikolski, Alaska · 1275 days ago · 35 km deep · 64 km away
  4. 2.6Fox Islands, Aleutian Islands, Alaska · 1272 days ago · 10 km deep · 90 km away
  5. 2.145 km SW of Nikolski, Alaska · 1271 days ago · 13 km deep · 82 km away
  6. 2.8127 km WSW of Nikolski, Alaska · 1267 days ago · 52 km deep · 35 km away
  7. 2.8100 km SW of Nikolski, Alaska · 1266 days ago · 35 km deep · 56 km away
  8. 3.2145 km SW of Nikolski, Alaska · 1266 days ago · 35 km deep · 65 km away
  9. 2.6Fox Islands, Aleutian Islands, Alaska · 1263 days ago · 10 km deep · 85 km away
  10. 2.0Fox Islands, Aleutian Islands, Alaska · 1259 days ago · 39 km deep · 72 km away
  11. 2.998 km WNW of Nikolski, Alaska · 1259 days ago · 125 km deep · 74 km away
  12. 3.777 km WSW of Nikolski, Alaska · 1256 days ago · 30 km deep · 49 km away
  13. 3.5Fox Islands, Aleutian Islands, Alaska · 1256 days ago · 50 km deep · 56 km away
  14. 3.2126 km SW of Nikolski, Alaska · 1255 days ago · 35 km deep · 40 km away
  15. 3.078 km SW of Nikolski, Alaska · 1254 days ago · 26 km deep · 57 km away
  16. 2.162 km SW of Nikolski, Alaska · 1254 days ago · 40 km deep · 76 km away
  17. 2.290 km SW of Nikolski, Alaska · 1254 days ago · 34 km deep · 56 km away
  18. 2.7169 km E of Atka, Alaska · 1253 days ago · 35 km deep · 99 km away
  19. 2.251 km SSW of Nikolski, Alaska · 1253 days ago · 13 km deep · 100 km away
  20. 2.984 km SSW of Nikolski, Alaska · 1251 days ago · 35 km deep · 91 km away
  21. 2.9114 km SW of Nikolski, Alaska · 1246 days ago · 35 km deep · 37 km away
  22. 1.943 km SW of Nikolski, Alaska · 1246 days ago · 17 km deep · 86 km away
  23. 2.7114 km WNW of Nikolski, Alaska · 1245 days ago · 213 km deep · 79 km away
  24. 5.471 km WNW of Nikolski, Alaska · 1238 days ago · 112 km deep · 87 km away · tsunami flag
  25. 2.636 km WSW of Nikolski, Alaska · 1238 days ago · 10 km deep · 87 km away
  26. 2.352 km WNW of Nikolski, Alaska · 1238 days ago · 97 km deep · 90 km away
  27. 2.9Fox Islands, Aleutian Islands, Alaska · 1237 days ago · 103 km deep · 89 km away
  28. 3.148 km W of Nikolski, Alaska · 1235 days ago · 10 km deep · 81 km away
  29. 3.1130 km SW of Nikolski, Alaska · 1232 days ago · 35 km deep · 39 km away
  30. 2.6142 km WSW of Nikolski, Alaska · 1231 days ago · 35 km deep · 28 km away
  31. 2.169 km SSW of Nikolski, Alaska · 1230 days ago · 26 km deep · 98 km away
  32. 2.944 km WSW of Nikolski, Alaska · 1230 days ago · 14 km deep · 78 km away
  33. 2.070 km SW of Nikolski, Alaska · 1229 days ago · 20 km deep · 78 km away
  34. 3.7197 km SW of Nikolski, Alaska · 1228 days ago · 35 km deep · 89 km away
  35. 2.697 km SW of Nikolski, Alaska · 1227 days ago · 35 km deep · 79 km away
  36. 3.4145 km WSW of Nikolski, Alaska · 1225 days ago · 56 km deep · 35 km away
  37. 3.871 km SW of Nikolski, Alaska · 1223 days ago · 32 km deep · 60 km away
  38. 2.746 km SSW of Nikolski, Alaska · 1223 days ago · 47 km deep · 98 km away
  39. 2.046 km SW of Nikolski, Alaska · 1222 days ago · 13 km deep · 80 km away

Before

  1. 3.2Fox Islands, Aleutian Islands, Alaska · 1282 days ago · 175 km deep · 56 km away
  2. 3.8128 km WSW of Nikolski, Alaska · 1288 days ago · 35 km deep · 19 km away
  3. 3.270 km SW of Nikolski, Alaska · 1293 days ago · 10 km deep · 66 km away
  4. 2.7116 km SW of Nikolski, Alaska · 1294 days ago · 35 km deep · 60 km away
  5. 4.288 km WSW of Nikolski, Alaska · 1296 days ago · 58 km deep · 37 km away · felt by 2
  6. 2.0112 km SW of Nikolski, Alaska · 1301 days ago · 29 km deep · 39 km away
  7. 2.390 km SSW of Nikolski, Alaska · 1301 days ago · 26 km deep · 98 km away
  8. 1.956 km W of Nikolski, Alaska · 1301 days ago · -3 km deep · 67 km away
  9. 2.778 km SW of Nikolski, Alaska · 1304 days ago · 66 km deep · 60 km away
  10. 2.753 km WSW of Nikolski, Alaska · 1306 days ago · 35 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k2gn (also filed as ak023456fawo). Read Sat, Oct 3, 2026, 4:10 AM UTC.