Alaska earthquakes

M2.9 earthquake 50 km S of Adak, Alaska

A magnitude 2.9 earthquake struck 50 km S of Adak, Alaska on Sun, Mar 12, 2023, 9:56 AM HADT (18:56 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.5 91 km ESE of Adak, 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-03-12 18:56:08 UTC
Depth
33.2 km (20.6 mi), shallow
Epicenter
51.425° N, 176.591° 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
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.105 · 12 stations
2.5ML, 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 5.3 km horizontally, 8.4 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
215°, poorly surrounded by stations
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 184 in the 60 days after this one and 58 in the 30 days before it.

After

  1. 2.041 km SW of Adak, Alaska · 1299 days ago · 35 km deep · 32 km away
  2. 1.641 km SSE of Adak, Alaska · 1299 days ago · 34 km deep · 20 km away
  3. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1299 days ago · 77 km deep · 58 km away
  4. 1.868 km SSE of Adak, Alaska · 1299 days ago · 22 km deep · 22 km away
  5. 1.676 km W of Adak, Alaska · 1298 days ago · 2 km deep · 93 km away
  6. 1.881 km WSW of Adak, Alaska · 1298 days ago · 28 km deep · 80 km away
  7. 1.76 km ENE of Adak, Alaska · 1298 days ago · 7 km deep · 53 km away
  8. 3.2103 km ESE of Adak, Alaska · 1298 days ago · 35 km deep · 93 km away
  9. 2.6Andreanof Islands, Aleutian Islands, Alaska · 1297 days ago · 35 km deep · 21 km away
  10. 2.067 km SSW of Adak, Alaska · 1297 days ago · 24 km deep · 35 km away
  11. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1296 days ago · 35 km deep · 15 km away
  12. 1.996 km SW of Adak, Alaska · 1296 days ago · 32 km deep · 80 km away
  13. 2.086 km WSW of Adak, Alaska · 1296 days ago · 32 km deep · 83 km away
  14. 1.950 km SSE of Adak, Alaska · 1296 days ago · 34 km deep · 9 km away
  15. 3.189 km SE of Adak, Alaska · 1295 days ago · 35 km deep · 70 km away
  16. 1.843 km SSE of Adak, Alaska · 1295 days ago · 25 km deep · 12 km away
  17. 1.653 km SW of Adak, Alaska · 1295 days ago · 34 km deep · 36 km away
  18. 3.032 km N of Adak, Alaska · 1295 days ago · 238 km deep · 82 km away
  19. 1.952 km SW of Adak, Alaska · 1295 days ago · 34 km deep · 33 km away
  20. 1.653 km SSW of Adak, Alaska · 1295 days ago · 28 km deep · 30 km away
  21. 1.582 km W of Adak, Alaska · 1295 days ago · 8 km deep · 100 km away
  22. 1.758 km ESE of Adak, Alaska · 1294 days ago · 46 km deep · 54 km away
  23. 1.67 km ENE of Adak, Alaska · 1294 days ago · 7 km deep · 54 km away
  24. 1.9Andreanof Islands, Aleutian Islands, Alaska · 1294 days ago · 33 km deep · 80 km away
  25. 1.860 km SSE of Adak, Alaska · 1294 days ago · 24 km deep · 27 km away
  26. 1.862 km SSW of Adak, Alaska · 1294 days ago · 38 km deep · 28 km away
  27. 1.992 km SW of Adak, Alaska · 1294 days ago · 53 km deep · 80 km away
  28. 1.848 km S of Adak, Alaska · 1294 days ago · 26 km deep · 5 km away
  29. 3.782 km ESE of Adak, Alaska · 1294 days ago · 35 km deep · 68 km away
  30. 1.758 km SSE of Adak, Alaska · 1293 days ago · 21 km deep · 23 km away
  31. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1292 days ago · 35 km deep · 29 km away
  32. 3.253 km SE of Adak, Alaska · 1291 days ago · 35 km deep · 36 km away
  33. 2.945 km SSE of Adak, Alaska · 1290 days ago · 35 km deep · 15 km away
  34. 2.886 km SSE of Adak, Alaska · 1289 days ago · 35 km deep · 41 km away
  35. 2.1107 km SW of Adak, Alaska · 1289 days ago · 24 km deep · 87 km away
  36. 2.672 km SE of Adak, Alaska · 1289 days ago · 35 km deep · 52 km away
  37. 1.655 km SE of Adak, Alaska · 1288 days ago · 20 km deep · 35 km away
  38. 2.824 km NE of Adak, Alaska · 1287 days ago · 120 km deep · 70 km away
  39. 2.155 km SW of Adak, Alaska · 1286 days ago · 76 km deep · 48 km away
  40. 2.077 km S of Adak, Alaska · 1286 days ago · 19 km deep · 29 km away
  41. 3.765 km SSE of Adak, Alaska · 1285 days ago · 35 km deep · 32 km away
  42. 1.964 km SSW of Adak, Alaska · 1285 days ago · 26 km deep · 22 km away
  43. 1.757 km ESE of Adak, Alaska · 1285 days ago · 43 km deep · 59 km away
  44. 1.650 km SE of Adak, Alaska · 1285 days ago · 23 km deep · 27 km away
  45. 2.858 km ENE of Adak, Alaska · 1285 days ago · 190 km deep · 94 km away
  46. 1.986 km SW of Adak, Alaska · 1284 days ago · 34 km deep · 57 km away
  47. 1.859 km SE of Adak, Alaska · 1284 days ago · 26 km deep · 40 km away
  48. 3.852 km SW of Adak, Alaska · 1284 days ago · 64 km deep · 51 km away
  49. 1.669 km SW of Adak, Alaska · 1284 days ago · 24 km deep · 61 km away
  50. 3.338 km E of Adak, Alaska · 1284 days ago · 80 km deep · 57 km away
  51. 2.844 km ESE of Adak, Alaska · 1283 days ago · 78 km deep · 54 km away
  52. 1.940 km E of Adak, Alaska · 1282 days ago · 75 km deep · 65 km away
  53. 3.151 km SSE of Adak, Alaska · 1281 days ago · 35 km deep · 13 km away
  54. 3.291 km SW of Adak, Alaska · 1281 days ago · 35 km deep · 75 km away
  55. 1.928 km S of Adak, Alaska · 1281 days ago · 63 km deep · 24 km away
  56. 1.5Andreanof Islands, Aleutian Islands, Alaska · 1281 days ago · 26 km deep · 38 km away
  57. 1.693 km SW of Adak, Alaska · 1281 days ago · 45 km deep · 80 km away
  58. 2.044 km NE of Adak, Alaska · 1281 days ago · 123 km deep · 87 km away
  59. 1.541 km SSE of Adak, Alaska · 1281 days ago · 30 km deep · 20 km away
  60. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1280 days ago · 35 km deep · 5 km away

The first 60 of 184.

Before

  1. 1.885 km ESE of Adak, Alaska · 1300 days ago · 25 km deep · 69 km away
  2. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1301 days ago · 30 km deep · 77 km away
  3. 1.841 km SW of Adak, Alaska · 1301 days ago · 64 km deep · 32 km away
  4. 1.670 km SE of Adak, Alaska · 1301 days ago · 26 km deep · 51 km away
  5. 1.684 km W of Adak, Alaska · 1301 days ago · 9 km deep · 99 km away
  6. 1.563 km SSW of Adak, Alaska · 1301 days ago · 20 km deep · 26 km away
  7. 2.657 km SE of Adak, Alaska · 1301 days ago · 35 km deep · 33 km away
  8. 3.189 km SW of Atka, Alaska · 1301 days ago · 35 km deep · 100 km away
  9. 2.065 km SE of Adak, Alaska · 1301 days ago · 26 km deep · 40 km away
  10. 1.966 km SW of Adak, Alaska · 1302 days ago · 31 km deep · 52 km away
  11. 2.973 km SSE of Adak, Alaska · 1303 days ago · 35 km deep · 26 km away
  12. 1.959 km SE of Adak, Alaska · 1303 days ago · 23 km deep · 41 km away
  13. 3.141 km SSE of Adak, Alaska · 1303 days ago · 35 km deep · 17 km away
  14. 2.576 km SSE of Adak, Alaska · 1303 days ago · 35 km deep · 29 km away
  15. 1.8Andreanof Islands, Aleutian Islands, Alaska · 1304 days ago · 47 km deep · 77 km away
  16. 1.861 km SE of Adak, Alaska · 1304 days ago · 5 km deep · 41 km away
  17. 1.540 km SW of Adak, Alaska · 1304 days ago · 17 km deep · 44 km away
  18. 2.7105 km SE of Adak, Alaska · 1304 days ago · 10 km deep · 70 km away
  19. 2.8100 km WSW of Adak, Alaska · 1306 days ago · 41 km deep · 95 km away
  20. 1.943 km SSE of Adak, Alaska · 1307 days ago · 34 km deep · 20 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000jly0 (also filed as ak02339q7gof). Read Fri, Oct 2, 2026, 7:22 AM UTC.