Alaska earthquakes

M2.8 earthquake 58 km W of Adak, Alaska

A magnitude 2.8 earthquake struck 58 km W of Adak, Alaska on Tue, Jan 31, 2023, 6:40 PM HAST (04:40 UTC), 99 km (61 mi) below the surface.

A larger quake followed: M5.0 121 km WSW 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
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-02-01 04:40:40 UTC
Depth
98.7 km (61.3 mi), intermediate-depth
Epicenter
51.792° N, 177.475° 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
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.148 · 6 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 9.3 km horizontally, 2.7 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
160°
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and 110 in the 30 days before it.

After

  1. 3.371 km SSW of Adak, Alaska · 1337 days ago · 35 km deep · 57 km away
  2. 2.8100 km SW of Adak, Alaska · 1337 days ago · 35 km deep · 65 km away
  3. 2.956 km S of Adak, Alaska · 1337 days ago · 35 km deep · 81 km away
  4. 1.946 km SW of Adak, Alaska · 1337 days ago · 46 km deep · 38 km away
  5. 2.064 km SW of Adak, Alaska · 1337 days ago · 47 km deep · 44 km away
  6. 3.010 km SE of Adak, Alaska · 1337 days ago · 73 km deep · 64 km away
  7. 1.851 km SE of Adak, Alaska · 1336 days ago · 21 km deep · 97 km away
  8. 1.947 km SE of Adak, Alaska · 1336 days ago · 51 km deep · 98 km away
  9. 2.089 km WSW of Adak, Alaska · 1336 days ago · 18 km deep · 39 km away
  10. 2.068 km SSW of Adak, Alaska · 1335 days ago · 37 km deep · 54 km away
  11. 1.739 km S of Adak, Alaska · 1335 days ago · 37 km deep · 65 km away
  12. 4.263 km WSW of Adak, Alaska · 1334 days ago · 71 km deep · 7 km away
  13. 2.076 km WSW of Adak, Alaska · 1334 days ago · 33 km deep · 33 km away
  14. 1.846 km SSW of Adak, Alaska · 1334 days ago · 51 km deep · 59 km away
  15. 3.1Andreanof Islands, Aleutian Islands, Alaska · 1334 days ago · 35 km deep · 36 km away
  16. 1.956 km SE of Adak, Alaska · 1334 days ago · 31 km deep · 100 km away
  17. 1.991 km SW of Adak, Alaska · 1334 days ago · 32 km deep · 58 km away
  18. 2.833 km S of Adak, Alaska · 1334 days ago · 65 km deep · 58 km away
  19. 1.686 km WSW of Adak, Alaska · 1334 days ago · 13 km deep · 37 km away
  20. 2.1121 km SW of Adak, Alaska · 1334 days ago · 25 km deep · 76 km away
  21. 2.7127 km SW of Adak, Alaska · 1334 days ago · 35 km deep · 83 km away
  22. 1.755 km W of Adak, Alaska · 1334 days ago · 21 km deep · 11 km away
  23. 2.3142 km WSW of Adak, Alaska · 1333 days ago · 13 km deep · 84 km away
  24. 2.269 km SW of Adak, Alaska · 1333 days ago · 45 km deep · 31 km away
  25. 2.186 km WSW of Adak, Alaska · 1332 days ago · 18 km deep · 40 km away
  26. 2.7145 km WSW of Adak, Alaska · 1332 days ago · 18 km deep · 91 km away
  27. 2.1141 km WSW of Adak, Alaska · 1332 days ago · 22 km deep · 90 km away
  28. 1.641 km SSE of Adak, Alaska · 1332 days ago · 34 km deep · 81 km away
  29. 2.0139 km WSW of Adak, Alaska · 1331 days ago · 25 km deep · 83 km away
  30. 1.639 km S of Adak, Alaska · 1331 days ago · 38 km deep · 68 km away
  31. 1.847 km S of Adak, Alaska · 1331 days ago · 26 km deep · 67 km away
  32. 2.5111 km SW of Adak, Alaska · 1331 days ago · 31 km deep · 72 km away
  33. 2.8135 km SW of Adak, Alaska · 1331 days ago · 35 km deep · 88 km away
  34. 2.1119 km SW of Adak, Alaska · 1331 days ago · 5 km deep · 74 km away
  35. 1.890 km SW of Adak, Alaska · 1330 days ago · 7 km deep · 45 km away
  36. 1.758 km S of Adak, Alaska · 1330 days ago · 26 km deep · 69 km away
  37. 2.6103 km SSW of Adak, Alaska · 1330 days ago · 35 km deep · 78 km away
  38. 2.1143 km WSW of Adak, Alaska · 1330 days ago · 26 km deep · 90 km away
  39. 2.864 km S of Adak, Alaska · 1330 days ago · 26 km deep · 75 km away
  40. 1.658 km SSE of Adak, Alaska · 1330 days ago · 26 km deep · 92 km away
  41. 1.788 km W of Adak, Alaska · 1329 days ago · 5 km deep · 32 km away
  42. 2.956 km S of Adak, Alaska · 1327 days ago · 35 km deep · 82 km away
  43. 2.1139 km SW of Adak, Alaska · 1327 days ago · 33 km deep · 92 km away
  44. 1.790 km W of Adak, Alaska · 1327 days ago · 11 km deep · 33 km away
  45. 2.794 km W of Adak, Alaska · 1327 days ago · 11 km deep · 38 km away
  46. 2.192 km W of Adak, Alaska · 1327 days ago · 9 km deep · 35 km away
  47. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1327 days ago · 27 km deep · 77 km away
  48. 2.1124 km WSW of Adak, Alaska · 1327 days ago · 25 km deep · 69 km away
  49. 1.9146 km WSW of Adak, Alaska · 1327 days ago · 21 km deep · 95 km away
  50. 2.775 km SSW of Adak, Alaska · 1327 days ago · 32 km deep · 65 km away
  51. 3.1110 km SW of Adak, Alaska · 1326 days ago · 35 km deep · 72 km away
  52. 2.695 km W of Adak, Alaska · 1326 days ago · 10 km deep · 40 km away
  53. 3.175 km SSW of Adak, Alaska · 1326 days ago · 35 km deep · 66 km away
  54. 3.191 km W of Adak, Alaska · 1323 days ago · 11 km deep · 33 km away
  55. 3.375 km WSW of Adak, Alaska · 1322 days ago · 97 km deep · 22 km away
  56. 1.591 km W of Adak, Alaska · 1322 days ago · 3 km deep · 34 km away
  57. 1.991 km W of Adak, Alaska · 1322 days ago · 4 km deep · 34 km away
  58. 2.190 km W of Adak, Alaska · 1322 days ago · 4 km deep · 33 km away
  59. 1.791 km W of Adak, Alaska · 1322 days ago · 4 km deep · 34 km away
  60. 3.192 km W of Adak, Alaska · 1322 days ago · 4 km deep · 36 km away

The first 60 of at least 201.

Before

  1. 3.6Andreanof Islands, Aleutian Islands, Alaska · 1339 days ago · 41 km deep · 70 km away
  2. 2.675 km W of Adak, Alaska · 1339 days ago · 88 km deep · 17 km away
  3. 3.3124 km SW of Adak, Alaska · 1339 days ago · 35 km deep · 76 km away
  4. 2.138 km E of Adak, Alaska · 1339 days ago · 67 km deep · 96 km away
  5. 1.956 km SE of Adak, Alaska · 1339 days ago · 25 km deep · 99 km away
  6. 2.9115 km WSW of Adak, Alaska · 1339 days ago · 33 km deep · 61 km away
  7. 2.059 km SSE of Adak, Alaska · 1339 days ago · 25 km deep · 99 km away
  8. 1.6145 km W of Adak, Alaska · 1340 days ago · 7 km deep · 87 km away
  9. 2.2116 km WSW of Adak, Alaska · 1340 days ago · 47 km deep · 62 km away
  10. 3.4107 km SW of Adak, Alaska · 1340 days ago · 44 km deep · 67 km away
  11. 3.767 km WSW of Adak, Alaska · 1340 days ago · 76 km deep · 15 km away
  12. 2.8117 km WSW of Adak, Alaska · 1341 days ago · 33 km deep · 62 km away
  13. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1341 days ago · 100 km deep · 88 km away
  14. 1.992 km WSW of Adak, Alaska · 1341 days ago · 60 km deep · 37 km away
  15. 1.610 km S of Adak, Alaska · 1342 days ago · 73 km deep · 57 km away
  16. 1.649 km SW of Adak, Alaska · 1342 days ago · 18 km deep · 34 km away
  17. 1.798 km WSW of Adak, Alaska · 1342 days ago · 10 km deep · 41 km away
  18. 1.865 km SSE of Adak, Alaska · 1342 days ago · 22 km deep · 96 km away
  19. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1342 days ago · 25 km deep · 10 km away
  20. 1.6Andreanof Islands, Aleutian Islands, Alaska · 1342 days ago · 13 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000jn67 (also filed as ak0231gzthz1). Read Thu, Oct 1, 2026, 4:47 AM UTC.