Alaska earthquakes

M2.8 earthquake 48 km ESE of Adak, Alaska

A magnitude 2.8 earthquake struck 48 km ESE of Adak, Alaska on Tue, Feb 18, 2025, 4:06 AM HAST (14:06 UTC), 56 km (35 mi) below the surface.

A larger quake followed: M6.2 88 km SSE 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
2025-02-18 14:06:54 UTC
Depth
55.9 km (34.7 mi), shallow
Epicenter
51.661° N, 176.027° 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 · ±0.128 · 8 stations
2.3ML, 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 9.2 km horizontally, 19.6 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
214°, poorly surrounded by stations
Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: at least 202 in the 60 days after this one and 93 in the 30 days before it.

After

  1. 2.439 km NNE of Adak, Alaska · 590 days ago · 96 km deep · 70 km away
  2. 2.353 km S of Adak, Alaska · 589 days ago · 26 km deep · 43 km away
  3. 2.242 km SSE of Adak, Alaska · 589 days ago · 44 km deep · 29 km away
  4. 2.048 km S of Adak, Alaska · 589 days ago · 24 km deep · 50 km away
  5. 1.923 km SW of Adak, Alaska · 588 days ago · 65 km deep · 57 km away
  6. 2.069 km SSW of Atka, Alaska · 588 days ago · 21 km deep · 94 km away
  7. 2.157 km WSW of Adak, Alaska · 588 days ago · 8 km deep · 99 km away
  8. 1.770 km SE of Adak, Alaska · 588 days ago · 22 km deep · 31 km away
  9. 1.760 km SE of Adak, Alaska · 588 days ago · 31 km deep · 23 km away
  10. 1.734 km SSE of Adak, Alaska · 587 days ago · 42 km deep · 25 km away
  11. 2.065 km SW of Adak, Alaska · 587 days ago · 49 km deep · 87 km away
  12. 2.662 km SSE of Adak, Alaska · 587 days ago · 35 km deep · 41 km away
  13. 2.566 km SSW of Adak, Alaska · 587 days ago · 50 km deep · 81 km away
  14. 2.011 km SSW of Adak, Alaska · 587 days ago · 62 km deep · 46 km away
  15. 1.749 km SE of Adak, Alaska · 586 days ago · 34 km deep · 20 km away
  16. 2.346 km WNW of Adak, Alaska · 586 days ago · 111 km deep · 95 km away
  17. 3.278 km ESE of Adak, Alaska · 586 days ago · 33 km deep · 31 km away
  18. 1.760 km SSE of Adak, Alaska · 586 days ago · 5 km deep · 41 km away
  19. 1.935 km SSE of Adak, Alaska · 586 days ago · 46 km deep · 25 km away
  20. 1.955 km W of Adak, Alaska · 586 days ago · 87 km deep · 98 km away
  21. 1.762 km SE of Adak, Alaska · 585 days ago · 18 km deep · 21 km away
  22. 1.923 km NE of Adak, Alaska · 585 days ago · 95 km deep · 45 km away
  23. 1.667 km SE of Adak, Alaska · 585 days ago · 26 km deep · 26 km away
  24. 1.993 km NE of Adak, Alaska · 585 days ago · 61 km deep · 88 km away
  25. 2.192 km SSE of Adak, Alaska · 585 days ago · 18 km deep · 55 km away
  26. 1.851 km SSE of Adak, Alaska · 585 days ago · 30 km deep · 27 km away
  27. 1.952 km S of Adak, Alaska · 584 days ago · 31 km deep · 51 km away
  28. 1.582 km ENE of Adak, Alaska · 584 days ago · 9 km deep · 61 km away
  29. 2.057 km SSW of Adak, Alaska · 584 days ago · 40 km deep · 77 km away
  30. 1.642 km SE of Adak, Alaska · 583 days ago · 18 km deep · 17 km away
  31. 2.553 km SSW of Atka, Alaska · 583 days ago · 35 km deep · 100 km away
  32. 1.761 km SSW of Adak, Alaska · 583 days ago · 47 km deep · 81 km away
  33. 1.864 km SSW of Adak, Alaska · 583 days ago · 44 km deep · 78 km away
  34. 1.757 km SE of Adak, Alaska · 583 days ago · 26 km deep · 26 km away
  35. 1.675 km SW of Atka, Alaska · 583 days ago · 20 km deep · 84 km away
  36. 1.640 km E of Adak, Alaska · 583 days ago · 74 km deep · 21 km away
  37. 1.679 km SSW of Atka, Alaska · 583 days ago · 18 km deep · 83 km away
  38. 1.760 km SE of Adak, Alaska · 583 days ago · 24 km deep · 24 km away
  39. 1.665 km SSW of Adak, Alaska · 582 days ago · 39 km deep · 69 km away
  40. 1.683 km SW of Atka, Alaska · 582 days ago · 25 km deep · 65 km away
  41. 1.6101 km ESE of Adak, Alaska · 582 days ago · 26 km deep · 54 km away
  42. 1.784 km WSW of Atka, Alaska · 582 days ago · 97 km deep · 59 km away
  43. 2.164 km NE of Adak, Alaska · 582 days ago · 159 km deep · 77 km away
  44. 2.047 km W of Adak, Alaska · 582 days ago · 82 km deep · 92 km away
  45. 1.678 km SE of Adak, Alaska · 582 days ago · 26 km deep · 33 km away
  46. 1.662 km SSE of Adak, Alaska · 582 days ago · 23 km deep · 32 km away
  47. 1.875 km SW of Atka, Alaska · 581 days ago · 35 km deep · 74 km away
  48. 2.271 km NE of Adak, Alaska · 581 days ago · 186 km deep · 75 km away
  49. 1.562 km SSE of Adak, Alaska · 581 days ago · 17 km deep · 30 km away
  50. 1.960 km SE of Adak, Alaska · 581 days ago · 43 km deep · 13 km away
  51. 5.053 km NE of Adak, Alaska · 581 days ago · 133 km deep · 68 km away · felt by 2
  52. 4.142 km SE of Adak, Alaska · 581 days ago · 55 km deep · 10 km away · felt by 2
  53. 1.855 km SSW of Atka, Alaska · 581 days ago · 24 km deep · 97 km away
  54. 1.655 km SSE of Adak, Alaska · 581 days ago · 25 km deep · 36 km away
  55. 1.778 km E of Adak, Alaska · 581 days ago · 74 km deep · 52 km away
  56. 1.785 km ESE of Adak, Alaska · 581 days ago · 38 km deep · 38 km away
  57. 1.852 km SE of Adak, Alaska · 580 days ago · 31 km deep · 21 km away
  58. 1.766 km SSW of Adak, Alaska · 580 days ago · 26 km deep · 75 km away
  59. 3.648 km SSE of Adak, Alaska · 580 days ago · 34 km deep · 31 km away
  60. 1.738 km ESE of Adak, Alaska · 580 days ago · 18 km deep · 13 km away

The first 60 of at least 202.

Before

  1. 1.837 km E of Adak, Alaska · 592 days ago · 65 km deep · 21 km away
  2. 1.960 km S of Adak, Alaska · 592 days ago · 35 km deep · 54 km away
  3. 1.864 km S of Adak, Alaska · 592 days ago · 15 km deep · 56 km away
  4. 1.968 km SW of Adak, Alaska · 592 days ago · 45 km deep · 100 km away
  5. 1.851 km SW of Adak, Alaska · 592 days ago · 41 km deep · 75 km away
  6. 1.966 km E of Adak, Alaska · 593 days ago · 22 km deep · 26 km away
  7. 2.771 km SSW of Atka, Alaska · 593 days ago · 35 km deep · 95 km away
  8. 2.981 km ESE of Adak, Alaska · 593 days ago · 35 km deep · 34 km away
  9. 3.091 km SE of Adak, Alaska · 593 days ago · 35 km deep · 44 km away
  10. 1.950 km SSW of Adak, Alaska · 593 days ago · 44 km deep · 67 km away
  11. 2.672 km SSW of Adak, Alaska · 593 days ago · 35 km deep · 86 km away
  12. 2.773 km SSW of Adak, Alaska · 593 days ago · 35 km deep · 86 km away
  13. 2.669 km SE of Adak, Alaska · 593 days ago · 35 km deep · 31 km away
  14. 2.670 km SE of Adak, Alaska · 594 days ago · 33 km deep · 29 km away
  15. 1.558 km SW of Adak, Alaska · 594 days ago · 33 km deep · 84 km away
  16. 2.272 km W of Atka, Alaska · 595 days ago · 114 km deep · 79 km away
  17. 2.933 km S of Adak, Alaska · 595 days ago · 48 km deep · 45 km away
  18. 1.755 km SSW of Adak, Alaska · 595 days ago · 42 km deep · 76 km away
  19. 1.848 km WSW of Atka, Alaska · 595 days ago · 68 km deep · 91 km away
  20. 1.767 km W of Atka, Alaska · 595 days ago · 26 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000pz76 (also filed as ak025299ph5b). Read Fri, Oct 2, 2026, 1:15 AM UTC.