Alaska earthquakes

M1.8 earthquake 50 km S of Unalaska, Alaska

A magnitude 1.8 earthquake struck 50 km S of Unalaska, Alaska on Wed, May 21, 2025, 7:45 PM AKDT (03:45 UTC), 49 km (30 mi) below the surface.

A larger quake followed: M4.2 77 km SSE of Akutan, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-05-22 03:45:06 UTC
Depth
48.9 km (30.4 mi), shallow
Epicenter
53.423° N, 166.555° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
22

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 151 in the 60 days after this one and 74 in the 30 days before it.

After

  1. 1.736 km SSW of Unalaska, Alaska · 497 days ago · 71 km deep · 27 km away
  2. 1.719 km E of Unalaska, Alaska · 496 days ago · 85 km deep · 55 km away
  3. 2.236 km SE of Unalaska, Alaska · 496 days ago · 63 km deep · 40 km away
  4. 3.392 km SSW of Unalaska, Alaska · 495 days ago · 35 km deep · 46 km away
  5. 1.977 km S of Unalaska, Alaska · 495 days ago · 30 km deep · 28 km away
  6. 1.676 km WSW of Unalaska, Alaska · 494 days ago · 39 km deep · 74 km away
  7. 1.6100 km SSW of Unalaska, Alaska · 494 days ago · 37 km deep · 52 km away
  8. 1.9132 km ESE of Nikolski, Alaska · 494 days ago · 7 km deep · 87 km away
  9. 1.763 km SE of Unalaska, Alaska · 493 days ago · 37 km deep · 50 km away
  10. 2.317 km SSE of Akutan, Alaska · 493 days ago · 115 km deep · 88 km away
  11. 1.772 km S of Unalaska, Alaska · 492 days ago · 38 km deep · 23 km away
  12. 1.829 km W of Dutch Harbor, Alaska · 492 days ago · 29 km deep · 55 km away
  13. 1.956 km S of Unalaska, Alaska · 492 days ago · 67 km deep · 8 km away
  14. 1.844 km ESE of Unalaska, Alaska · 491 days ago · 54 km deep · 53 km away
  15. 1.971 km S of Unalaska, Alaska · 490 days ago · 32 km deep · 23 km away
  16. 1.756 km SSW of Unalaska, Alaska · 490 days ago · 60 km deep · 23 km away
  17. 3.981 km SSW of Unalaska, Alaska · 489 days ago · 46 km deep · 40 km away
  18. 1.781 km S of Unalaska, Alaska · 489 days ago · 17 km deep · 33 km away
  19. 1.743 km S of Unalaska, Alaska · 489 days ago · 53 km deep · 7 km away
  20. 2.7129 km S of Unalaska, Alaska · 489 days ago · 10 km deep · 80 km away
  21. 2.1108 km E of Nikolski, Alaska · 488 days ago · 22 km deep · 79 km away
  22. 1.524 km ESE of Unalaska, Alaska · 488 days ago · 31 km deep · 49 km away
  23. 1.777 km WSW of Unalaska, Alaska · 487 days ago · 13 km deep · 76 km away
  24. 1.54 km ENE of Unalaska, Alaska · 487 days ago · 12 km deep · 52 km away
  25. 2.258 km SSE of Unalaska, Alaska · 487 days ago · 40 km deep · 23 km away
  26. 3.191 km SSW of Unalaska, Alaska · 486 days ago · 35 km deep · 46 km away
  27. 2.1123 km S of Unalaska, Alaska · 486 days ago · 13 km deep · 74 km away
  28. 1.717 km WSW of Dutch Harbor, Alaska · 486 days ago · 7 km deep · 50 km away
  29. 1.963 km W of Dutch Harbor, Alaska · 485 days ago · 108 km deep · 79 km away
  30. 2.1135 km S of Unalaska, Alaska · 485 days ago · 19 km deep · 85 km away
  31. 1.654 km S of Unalaska, Alaska · 485 days ago · 27 km deep · 10 km away
  32. 3.06 km SE of Unalaska, Alaska · 485 days ago · 13 km deep · 46 km away
  33. 1.889 km SSW of Unalaska, Alaska · 485 days ago · 25 km deep · 44 km away
  34. 1.993 km SSW of Unalaska, Alaska · 484 days ago · 26 km deep · 47 km away
  35. 1.784 km ENE of Nikolski, Alaska · 484 days ago · 37 km deep · 80 km away
  36. 1.636 km SSW of Akutan, Alaska · 484 days ago · 70 km deep · 60 km away
  37. 1.673 km S of Unalaska, Alaska · 484 days ago · 4 km deep · 23 km away
  38. 1.784 km SSW of Unalaska, Alaska · 483 days ago · 32 km deep · 40 km away
  39. 1.582 km SSE of Akutan, Alaska · 483 days ago · 7 km deep · 92 km away
  40. 1.575 km SSE of Akutan, Alaska · 483 days ago · 23 km deep · 82 km away
  41. 2.595 km SSW of Unalaska, Alaska · 482 days ago · 35 km deep · 52 km away
  42. 1.998 km SSE of Akutan, Alaska · 482 days ago · 17 km deep · 87 km away
  43. 1.63 km ESE of Unalaska, Alaska · 480 days ago · 7 km deep · 49 km away
  44. 1.548 km SW of Unalaska, Alaska · 480 days ago · 80 km deep · 44 km away
  45. 2.031 km SSE of Akutan, Alaska · 479 days ago · 76 km deep · 85 km away
  46. 3.36 km SE of Unalaska, Alaska · 479 days ago · 11 km deep · 46 km away
  47. 2.67 km SE of Unalaska, Alaska · 479 days ago · 11 km deep · 46 km away
  48. 1.672 km SE of Unalaska, Alaska · 479 days ago · 32 km deep · 47 km away
  49. 1.668 km SE of Unalaska, Alaska · 479 days ago · 26 km deep · 52 km away
  50. 2.58 km SE of Unalaska, Alaska · 479 days ago · 13 km deep · 44 km away
  51. 1.851 km S of Unalaska, Alaska · 478 days ago · 35 km deep · 6 km away
  52. 1.741 km SSW of Unalaska, Alaska · 477 days ago · 69 km deep · 22 km away
  53. 1.689 km SSW of Unalaska, Alaska · 477 days ago · 26 km deep · 49 km away
  54. 1.887 km SSW of Unalaska, Alaska · 477 days ago · 26 km deep · 43 km away
  55. 2.781 km SW of Unalaska, Alaska · 477 days ago · 69 km deep · 59 km away
  56. 2.279 km SSW of Unalaska, Alaska · 477 days ago · 41 km deep · 34 km away
  57. 2.1124 km S of Unalaska, Alaska · 477 days ago · 6 km deep · 74 km away
  58. 2.048 km ESE of Unalaska, Alaska · 476 days ago · 31 km deep · 50 km away
  59. 1.62 km ENE of Unalaska, Alaska · 476 days ago · 9 km deep · 51 km away
  60. 1.95 km SE of Unalaska, Alaska · 476 days ago · 15 km deep · 47 km away

The first 60 of 151.

Before

  1. 2.149 km SE of Unalaska, Alaska · 499 days ago · 24 km deep · 31 km away
  2. 2.158 km SE of Unalaska, Alaska · 499 days ago · 22 km deep · 37 km away
  3. 3.472 km SSW of Unalaska, Alaska · 500 days ago · 35 km deep · 25 km away
  4. 1.895 km SSW of Unalaska, Alaska · 500 days ago · 24 km deep · 53 km away
  5. 1.978 km E of Nikolski, Alaska · 500 days ago · 36 km deep · 95 km away
  6. 1.873 km SSE of Akutan, Alaska · 502 days ago · 32 km deep · 71 km away
  7. 2.057 km SSW of Unalaska, Alaska · 502 days ago · 68 km deep · 28 km away
  8. 1.879 km NE of Nikolski, Alaska · 502 days ago · 117 km deep · 96 km away
  9. 1.670 km SSW of Unalaska, Alaska · 502 days ago · 21 km deep · 32 km away
  10. 1.999 km E of Nikolski, Alaska · 502 days ago · 37 km deep · 78 km away
  11. 3.280 km E of Nikolski, Alaska · 503 days ago · 35 km deep · 89 km away
  12. 1.687 km SSW of Unalaska, Alaska · 504 days ago · 26 km deep · 43 km away
  13. 1.734 km SSE of Akutan, Alaska · 504 days ago · 63 km deep · 79 km away
  14. 1.988 km SSE of Akutan, Alaska · 504 days ago · 24 km deep · 73 km away
  15. 2.244 km SSE of Unalaska, Alaska · 504 days ago · 26 km deep · 13 km away
  16. 1.925 km S of Akutan, Alaska · 505 days ago · 70 km deep · 78 km away
  17. 1.895 km SSW of Unalaska, Alaska · 506 days ago · 13 km deep · 52 km away
  18. 1.814 km WSW of Akutan, Alaska · 506 days ago · 20 km deep · 83 km away
  19. 1.516 km W of Akutan, Alaska · 506 days ago · 19 km deep · 84 km away
  20. 2.813 km WSW of Akutan, Alaska · 506 days ago · 21 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0256iwd4lc. Read Fri, Oct 2, 2026, 2:08 PM UTC.