Alaska earthquakes

M2.9 earthquake 270 km W of Adak, Alaska

A magnitude 2.9 earthquake struck 270 km W of Adak, Alaska on Mon, Apr 22, 2024, 3:57 AM GMT+12 (15:57 UTC), 155 km (96 mi) below the surface.

A larger quake followed: M4.9 254 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-04-21 15:57:47 UTC
Depth
154.9 km (96.3 mi), intermediate-depth
Epicenter
52.012° N, 179.440° 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
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.091 · 16 stations
2.6ML, 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 13.9 km horizontally, 6.7 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
166°
Stations used
22

Nearby

Within 100 km, magnitude 1.5 and up: 152 in the 60 days after this one and 43 in the 30 days before it.

After

  1. 2.7265 km W of Adak, Alaska · 894 days ago · 139 km deep · 13 km away
  2. 3.4266 km W of Adak, Alaska · 892 days ago · 66 km deep · 53 km away
  3. 3.3262 km WSW of Adak, Alaska · 891 days ago · 24 km deep · 90 km away
  4. 2.5258 km WSW of Adak, Alaska · 891 days ago · 35 km deep · 91 km away
  5. 4.6248 km WSW of Adak, Alaska · 891 days ago · 36 km deep · 92 km away
  6. 2.0Rat Islands, Aleutian Islands, Alaska · 891 days ago · 13 km deep · 75 km away
  7. 2.7258 km WSW of Adak, Alaska · 889 days ago · 54 km deep · 68 km away
  8. 2.4209 km WSW of Adak, Alaska · 889 days ago · 58 km deep · 86 km away
  9. 2.2Rat Islands, Aleutian Islands, Alaska · 889 days ago · 98 km deep · 68 km away
  10. 2.0264 km W of Adak, Alaska · 889 days ago · 65 km deep · 56 km away
  11. 1.6Rat Islands, Aleutian Islands, Alaska · 889 days ago · 7 km deep · 61 km away
  12. 4.9254 km WSW of Adak, Alaska · 888 days ago · 56 km deep · 72 km away
  13. 1.9253 km WSW of Adak, Alaska · 888 days ago · 38 km deep · 73 km away
  14. 2.1253 km WSW of Adak, Alaska · 888 days ago · 41 km deep · 73 km away
  15. 2.2230 km W of Adak, Alaska · 888 days ago · 70 km deep · 67 km away
  16. 2.2Rat Islands, Aleutian Islands, Alaska · 888 days ago · 120 km deep · 57 km away
  17. 2.7264 km W of Adak, Alaska · 888 days ago · 72 km deep · 48 km away
  18. 3.3255 km WSW of Adak, Alaska · 887 days ago · 48 km deep · 76 km away
  19. 2.9Rat Islands, Aleutian Islands, Alaska · 887 days ago · 143 km deep · 85 km away
  20. 1.9290 km WSW of Adak, Alaska · 887 days ago · 22 km deep · 90 km away
  21. 2.6242 km W of Adak, Alaska · 887 days ago · 166 km deep · 28 km away
  22. 2.5Rat Islands, Aleutian Islands, Alaska · 886 days ago · 64 km deep · 95 km away
  23. 1.8Rat Islands, Aleutian Islands, Alaska · 884 days ago · 6 km deep · 84 km away
  24. 2.8Rat Islands, Aleutian Islands, Alaska · 884 days ago · 147 km deep · 99 km away
  25. 3.0Rat Islands, Aleutian Islands, Alaska · 883 days ago · 113 km deep · 79 km away
  26. 2.6267 km WSW of Adak, Alaska · 883 days ago · 64 km deep · 62 km away
  27. 1.5257 km W of Adak, Alaska · 883 days ago · 10 km deep · 23 km away
  28. 2.7219 km WSW of Adak, Alaska · 882 days ago · 10 km deep · 91 km away
  29. 3.0Rat Islands, Aleutian Islands, Alaska · 882 days ago · 53 km deep · 81 km away
  30. 2.7Rat Islands, Aleutian Islands, Alaska · 881 days ago · 66 km deep · 64 km away
  31. 2.2Rat Islands, Aleutian Islands, Alaska · 880 days ago · 92 km deep · 38 km away
  32. 3.0245 km W of Adak, Alaska · 880 days ago · 172 km deep · 25 km away
  33. 1.9196 km WSW of Adak, Alaska · 879 days ago · 65 km deep · 93 km away
  34. 3.2Rat Islands, Aleutian Islands, Alaska · 878 days ago · 35 km deep · 97 km away
  35. 3.8252 km W of Adak, Alaska · 878 days ago · 104 km deep · 33 km away · felt by 1
  36. 2.6Rat Islands, Aleutian Islands, Alaska · 878 days ago · 61 km deep · 94 km away
  37. 2.6257 km W of Adak, Alaska · 877 days ago · 105 km deep · 28 km away
  38. 3.1Rat Islands, Aleutian Islands, Alaska · 877 days ago · 143 km deep · 86 km away
  39. 2.7Rat Islands, Aleutian Islands, Alaska · 877 days ago · 88 km deep · 46 km away
  40. 2.6206 km W of Adak, Alaska · 877 days ago · 173 km deep · 67 km away
  41. 2.9254 km WSW of Adak, Alaska · 876 days ago · 35 km deep · 80 km away
  42. 3.1Rat Islands, Aleutian Islands, Alaska · 876 days ago · 113 km deep · 61 km away
  43. 3.1Rat Islands, Aleutian Islands, Alaska · 876 days ago · 44 km deep · 77 km away
  44. 2.0283 km WSW of Adak, Alaska · 875 days ago · 30 km deep · 67 km away
  45. 4.2Rat Islands, Aleutian Islands, Alaska · 875 days ago · 138 km deep · 91 km away
  46. 2.3253 km W of Adak, Alaska · 875 days ago · 65 km deep · 53 km away
  47. 2.0290 km W of Adak, Alaska · 874 days ago · 26 km deep · 57 km away
  48. 2.5224 km W of Adak, Alaska · 874 days ago · 18 km deep · 52 km away
  49. 2.6200 km W of Adak, Alaska · 874 days ago · 10 km deep · 74 km away
  50. 3.7207 km WSW of Adak, Alaska · 871 days ago · 72 km deep · 85 km away
  51. 2.7Rat Islands, Aleutian Islands, Alaska · 871 days ago · 66 km deep · 60 km away
  52. 2.7279 km WSW of Adak, Alaska · 870 days ago · 52 km deep · 86 km away
  53. 2.2200 km W of Adak, Alaska · 869 days ago · 65 km deep · 88 km away
  54. 2.7228 km WSW of Adak, Alaska · 868 days ago · 68 km deep · 80 km away
  55. 1.8275 km WSW of Adak, Alaska · 868 days ago · 17 km deep · 96 km away
  56. 2.7Rat Islands, Aleutian Islands, Alaska · 868 days ago · 5 km deep · 69 km away
  57. 4.2268 km W of Adak, Alaska · 868 days ago · 85 km deep · 30 km away
  58. 2.7281 km W of Adak, Alaska · 868 days ago · 65 km deep · 50 km away
  59. 2.0Rat Islands, Aleutian Islands, Alaska · 867 days ago · 109 km deep · 83 km away
  60. 1.8283 km W of Adak, Alaska · 866 days ago · 63 km deep · 45 km away

The first 60 of 152.

Before

  1. 1.7Rat Islands, Aleutian Islands, Alaska · 895 days ago · 65 km deep · 65 km away
  2. 2.0Rat Islands, Aleutian Islands, Alaska · 895 days ago · 7 km deep · 78 km away
  3. 2.6Rat Islands, Aleutian Islands, Alaska · 895 days ago · 12 km deep · 86 km away
  4. 1.9293 km W of Adak, Alaska · 895 days ago · 67 km deep · 49 km away
  5. 1.7261 km W of Adak, Alaska · 895 days ago · 62 km deep · 60 km away
  6. 2.8211 km W of Adak, Alaska · 896 days ago · 92 km deep · 67 km away
  7. 1.6261 km W of Adak, Alaska · 897 days ago · 13 km deep · 29 km away
  8. 1.8233 km WSW of Adak, Alaska · 897 days ago · 24 km deep · 93 km away
  9. 2.6237 km WSW of Adak, Alaska · 897 days ago · 53 km deep · 80 km away
  10. 2.4180 km W of Adak, Alaska · 899 days ago · 69 km deep · 93 km away
  11. 2.9Rat Islands, Aleutian Islands, Alaska · 900 days ago · 77 km deep · 69 km away
  12. 2.8Rat Islands, Aleutian Islands, Alaska · 900 days ago · 44 km deep · 81 km away
  13. 3.7Rat Islands, Aleutian Islands, Alaska · 901 days ago · 35 km deep · 82 km away
  14. 2.1289 km W of Adak, Alaska · 902 days ago · 93 km deep · 30 km away
  15. 1.9289 km W of Adak, Alaska · 902 days ago · 61 km deep · 35 km away
  16. 2.2260 km W of Adak, Alaska · 904 days ago · 80 km deep · 38 km away
  17. 3.1Rat Islands, Aleutian Islands, Alaska · 904 days ago · 79 km deep · 53 km away
  18. 3.2237 km WSW of Adak, Alaska · 906 days ago · 16 km deep · 75 km away
  19. 1.6255 km W of Adak, Alaska · 906 days ago · 10 km deep · 57 km away
  20. 3.6281 km WSW of Adak, Alaska · 906 days ago · 35 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000n0l9 (also filed as ak02455hgouo). Read Fri, Oct 2, 2026, 3:32 PM UTC.