Alaska earthquakes

M3.1 earthquake 256 km WSW of Adak, Alaska

A magnitude 3.1 earthquake struck 256 km WSW of Adak, Alaska on Tue, Oct 22, 2024, 7:09 PM GMT+12 (07:09 UTC), 51 km (32 mi) below the surface.

A larger quake followed: M4.5 219 km WSW of Adak, 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
3.1 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-10-22 07:09:28 UTC
Depth
51.2 km (31.8 mi), shallow
Epicenter
51.353° N, 179.753° E
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 · ±0.091 · 16 stations
2.9ML, 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 3.6 km horizontally, 4.7 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
198°, poorly surrounded by stations
Stations used
18

Nearby

Within 100 km, magnitude 1.5 and up: 117 in the 60 days after this one and 49 in the 30 days before it.

After

  1. 2.1Rat Islands, Aleutian Islands, Alaska · 710 days ago · 64 km deep · 61 km away
  2. 3.0Rat Islands, Aleutian Islands, Alaska · 709 days ago · 10 km deep · 90 km away
  3. 3.0238 km WSW of Adak, Alaska · 709 days ago · 10 km deep · 53 km away
  4. 3.4234 km W of Adak, Alaska · 708 days ago · 214 km deep · 83 km away
  5. 2.5257 km W of Adak, Alaska · 708 days ago · 66 km deep · 18 km away
  6. 3.3255 km W of Adak, Alaska · 708 days ago · 93 km deep · 38 km away
  7. 2.6165 km W of Adak, Alaska · 707 days ago · 116 km deep · 96 km away
  8. 3.0Rat Islands, Aleutian Islands, Alaska · 706 days ago · 76 km deep · 80 km away
  9. 3.2296 km W of Adak, Alaska · 706 days ago · 127 km deep · 68 km away
  10. 2.0Rat Islands, Aleutian Islands, Alaska · 705 days ago · 61 km deep · 69 km away
  11. 2.7219 km W of Adak, Alaska · 705 days ago · 125 km deep · 74 km away
  12. 2.5278 km W of Adak, Alaska · 705 days ago · 73 km deep · 36 km away
  13. 2.8223 km WSW of Adak, Alaska · 703 days ago · 70 km deep · 34 km away
  14. 3.3267 km WSW of Adak, Alaska · 701 days ago · 67 km deep · 11 km away
  15. 3.0Rat Islands, Aleutian Islands, Alaska · 699 days ago · 52 km deep · 87 km away
  16. 2.1176 km WSW of Adak, Alaska · 699 days ago · 22 km deep · 95 km away
  17. 2.0294 km WSW of Adak, Alaska · 699 days ago · 22 km deep · 39 km away
  18. 2.5185 km WSW of Adak, Alaska · 698 days ago · 59 km deep · 76 km away
  19. 3.8Rat Islands, Aleutian Islands, Alaska · 697 days ago · 87 km deep · 79 km away
  20. 2.1Rat Islands, Aleutian Islands, Alaska · 697 days ago · 89 km deep · 77 km away
  21. 2.2289 km WSW of Adak, Alaska · 697 days ago · 22 km deep · 36 km away
  22. 2.1Rat Islands, Aleutian Islands, Alaska · 697 days ago · 61 km deep · 61 km away
  23. 2.3Rat Islands, Aleutian Islands, Alaska · 697 days ago · 93 km deep · 94 km away
  24. 2.0178 km WSW of Adak, Alaska · 696 days ago · 24 km deep · 91 km away
  25. 2.9288 km W of Adak, Alaska · 696 days ago · 63 km deep · 38 km away
  26. 2.2161 km WSW of Adak, Alaska · 696 days ago · 25 km deep · 98 km away
  27. 2.2196 km WSW of Adak, Alaska · 696 days ago · 23 km deep · 73 km away
  28. 2.8197 km WSW of Adak, Alaska · 696 days ago · 30 km deep · 72 km away
  29. 2.7199 km WSW of Adak, Alaska · 695 days ago · 67 km deep · 57 km away
  30. 1.6269 km W of Adak, Alaska · 695 days ago · 8 km deep · 80 km away
  31. 2.3243 km WSW of Adak, Alaska · 695 days ago · 13 km deep · 51 km away
  32. 3.3248 km W of Adak, Alaska · 695 days ago · 177 km deep · 83 km away
  33. 2.2Rat Islands, Aleutian Islands, Alaska · 694 days ago · 33 km deep · 66 km away
  34. 2.7Rat Islands, Aleutian Islands, Alaska · 694 days ago · 24 km deep · 60 km away
  35. 3.0Rat Islands, Aleutian Islands, Alaska · 694 days ago · 10 km deep · 69 km away
  36. 2.1291 km WSW of Adak, Alaska · 694 days ago · 33 km deep · 35 km away
  37. 2.8226 km WSW of Adak, Alaska · 693 days ago · 10 km deep · 77 km away
  38. 2.5177 km WSW of Adak, Alaska · 691 days ago · 24 km deep · 79 km away
  39. 2.0Rat Islands, Aleutian Islands, Alaska · 691 days ago · 13 km deep · 68 km away
  40. 2.0Rat Islands, Aleutian Islands, Alaska · 691 days ago · 68 km deep · 78 km away
  41. 2.6Rat Islands, Aleutian Islands, Alaska · 691 days ago · 75 km deep · 77 km away
  42. 2.2236 km W of Adak, Alaska · 691 days ago · 68 km deep · 30 km away
  43. 2.2Rat Islands, Aleutian Islands, Alaska · 691 days ago · 68 km deep · 74 km away
  44. 2.3214 km W of Adak, Alaska · 691 days ago · 100 km deep · 62 km away
  45. 2.1286 km W of Adak, Alaska · 690 days ago · 57 km deep · 36 km away
  46. 2.6243 km WSW of Adak, Alaska · 688 days ago · 28 km deep · 44 km away
  47. 2.1253 km WSW of Adak, Alaska · 688 days ago · 7 km deep · 12 km away
  48. 3.3259 km WSW of Adak, Alaska · 685 days ago · 35 km deep · 10 km away
  49. 2.8Rat Islands, Aleutian Islands, Alaska · 684 days ago · 17 km deep · 78 km away
  50. 2.2Rat Islands, Aleutian Islands, Alaska · 684 days ago · 69 km deep · 53 km away
  51. 2.0Rat Islands, Aleutian Islands, Alaska · 684 days ago · 8 km deep · 66 km away
  52. 3.0Rat Islands, Aleutian Islands, Alaska · 684 days ago · 70 km deep · 81 km away
  53. 2.3186 km WSW of Adak, Alaska · 683 days ago · 27 km deep · 89 km away
  54. 3.0233 km WSW of Adak, Alaska · 683 days ago · 10 km deep · 52 km away
  55. 2.6Rat Islands, Aleutian Islands, Alaska · 682 days ago · 84 km deep · 71 km away
  56. 2.9Rat Islands, Aleutian Islands, Alaska · 681 days ago · 92 km deep · 79 km away
  57. 2.8Rat Islands, Aleutian Islands, Alaska · 681 days ago · 24 km deep · 56 km away
  58. 4.0Rat Islands, Aleutian Islands, Alaska · 681 days ago · 34 km deep · 62 km away
  59. 1.9297 km W of Adak, Alaska · 681 days ago · 6 km deep · 49 km away
  60. 2.4236 km WSW of Adak, Alaska · 678 days ago · 15 km deep · 47 km away

The first 60 of 117.

Before

  1. 3.2198 km WSW of Adak, Alaska · 711 days ago · 35 km deep · 79 km away
  2. 2.3188 km WSW of Adak, Alaska · 711 days ago · 10 km deep · 69 km away
  3. 2.9187 km WSW of Adak, Alaska · 712 days ago · 31 km deep · 74 km away
  4. 2.2Rat Islands, Aleutian Islands, Alaska · 712 days ago · 13 km deep · 93 km away
  5. 1.8161 km WSW of Adak, Alaska · 712 days ago · 96 km deep · 95 km away
  6. 2.0292 km W of Adak, Alaska · 713 days ago · 52 km deep · 41 km away
  7. 2.9261 km W of Adak, Alaska · 713 days ago · 85 km deep · 42 km away
  8. 2.1Rat Islands, Aleutian Islands, Alaska · 714 days ago · 71 km deep · 98 km away
  9. 2.7Rat Islands, Aleutian Islands, Alaska · 715 days ago · 106 km deep · 99 km away
  10. 2.1186 km WSW of Adak, Alaska · 715 days ago · 14 km deep · 73 km away
  11. 2.8298 km W of Adak, Alaska · 716 days ago · 87 km deep · 62 km away
  12. 1.8262 km WSW of Adak, Alaska · 717 days ago · 8 km deep · 6 km away
  13. 2.9276 km WSW of Adak, Alaska · 718 days ago · 65 km deep · 23 km away
  14. 3.2282 km W of Adak, Alaska · 721 days ago · 103 km deep · 68 km away
  15. 1.9194 km WSW of Adak, Alaska · 722 days ago · 22 km deep · 66 km away
  16. 2.7190 km WSW of Adak, Alaska · 723 days ago · 31 km deep · 76 km away
  17. 1.8267 km WSW of Adak, Alaska · 724 days ago · 12 km deep · 11 km away
  18. 2.0223 km WSW of Adak, Alaska · 724 days ago · 52 km deep · 34 km away
  19. 3.5203 km WSW of Adak, Alaska · 724 days ago · 69 km deep · 53 km away
  20. 1.9Rat Islands, Aleutian Islands, Alaska · 724 days ago · 42 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000nvb2 (also filed as ak024dlnar1x). Read Fri, Oct 2, 2026, 3:20 AM UTC.