Alaska earthquakes

M1.7 earthquake 90 km NNE of Nikolski, Alaska

A magnitude 1.7 earthquake struck 90 km NNE of Nikolski, Alaska on Tue, May 20, 2025, 1:08 AM AKDT (09:08 UTC), 133 km (82 mi) below the surface.

A larger quake followed: M3.9 81 km SSW of Unalaska, 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
1.7 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-05-20 09:08:52 UTC
Depth
132.5 km (82.3 mi), intermediate-depth
Epicenter
53.635° N, 168.148° 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
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 69 in the 60 days after this one and 41 in the 30 days before it.

After

  1. 1.740 km NNW of Nikolski, Alaska · 503 days ago · 44 km deep · 76 km away
  2. 1.978 km E of Nikolski, Alaska · 503 days ago · 36 km deep · 86 km away
  3. 1.895 km SSW of Unalaska, Alaska · 503 days ago · 24 km deep · 89 km away
  4. 3.472 km SSW of Unalaska, Alaska · 503 days ago · 35 km deep · 100 km away
  5. 1.9129 km W of Dutch Harbor, Alaska · 501 days ago · 13 km deep · 56 km away
  6. 1.736 km SSW of Unalaska, Alaska · 500 days ago · 71 km deep · 86 km away
  7. 2.243 km ENE of Nikolski, Alaska · 498 days ago · 70 km deep · 58 km away
  8. 1.676 km WSW of Unalaska, Alaska · 498 days ago · 39 km deep · 35 km away
  9. 2.887 km N of Nikolski, Alaska · 497 days ago · 50 km deep · 58 km away
  10. 3.147 km ENE of Nikolski, Alaska · 496 days ago · 89 km deep · 60 km away
  11. 2.052 km E of Nikolski, Alaska · 495 days ago · 37 km deep · 74 km away
  12. 1.829 km W of Dutch Harbor, Alaska · 495 days ago · 29 km deep · 80 km away
  13. 1.756 km SSW of Unalaska, Alaska · 493 days ago · 60 km deep · 86 km away
  14. 3.981 km SSW of Unalaska, Alaska · 492 days ago · 46 km deep · 89 km away
  15. 2.445 km ESE of Nikolski, Alaska · 492 days ago · 35 km deep · 98 km away
  16. 1.777 km WSW of Unalaska, Alaska · 490 days ago · 13 km deep · 33 km away
  17. 3.156 km ENE of Nikolski, Alaska · 489 days ago · 76 km deep · 59 km away
  18. 3.191 km SSW of Unalaska, Alaska · 489 days ago · 35 km deep · 98 km away
  19. 1.717 km WSW of Dutch Harbor, Alaska · 489 days ago · 7 km deep · 92 km away
  20. 1.963 km W of Dutch Harbor, Alaska · 488 days ago · 108 km deep · 48 km away
  21. 1.889 km SSW of Unalaska, Alaska · 488 days ago · 25 km deep · 98 km away
  22. 1.784 km ENE of Nikolski, Alaska · 487 days ago · 37 km deep · 69 km away
  23. 1.784 km SSW of Unalaska, Alaska · 486 days ago · 32 km deep · 94 km away
  24. 2.595 km SSW of Unalaska, Alaska · 485 days ago · 35 km deep · 93 km away
  25. 1.548 km SW of Unalaska, Alaska · 483 days ago · 80 km deep · 67 km away
  26. 1.741 km SSW of Unalaska, Alaska · 480 days ago · 69 km deep · 88 km away
  27. 1.689 km SSW of Unalaska, Alaska · 480 days ago · 26 km deep · 86 km away
  28. 1.887 km SSW of Unalaska, Alaska · 480 days ago · 26 km deep · 95 km away
  29. 2.781 km SW of Unalaska, Alaska · 480 days ago · 69 km deep · 54 km away
  30. 2.279 km SSW of Unalaska, Alaska · 480 days ago · 41 km deep · 95 km away
  31. 2.735 km NNE of Nikolski, Alaska · 479 days ago · 84 km deep · 56 km away
  32. 2.377 km SSW of Unalaska, Alaska · 478 days ago · 49 km deep · 93 km away
  33. 1.876 km SSW of Unalaska, Alaska · 478 days ago · 20 km deep · 95 km away
  34. 2.561 km ESE of Nikolski, Alaska · 477 days ago · 35 km deep · 98 km away
  35. 2.743 km SSW of Unalaska, Alaska · 477 days ago · 67 km deep · 96 km away
  36. 2.187 km SW of Unalaska, Alaska · 476 days ago · 63 km deep · 71 km away
  37. 2.339 km ESE of Nikolski, Alaska · 476 days ago · 48 km deep · 92 km away
  38. 1.944 km NNE of Nikolski, Alaska · 474 days ago · 83 km deep · 46 km away
  39. 1.855 km NNW of Nikolski, Alaska · 474 days ago · 20 km deep · 73 km away
  40. 3.318 km WSW of Dutch Harbor, Alaska · 474 days ago · 5 km deep · 91 km away · felt by 1
  41. 1.571 km SW of Unalaska, Alaska · 474 days ago · 14 km deep · 57 km away
  42. 1.9120 km WNW of Dutch Harbor, Alaska · 471 days ago · 23 km deep · 62 km away
  43. 1.675 km WSW of Unalaska, Alaska · 469 days ago · 33 km deep · 38 km away
  44. 2.269 km ESE of Nikolski, Alaska · 469 days ago · 29 km deep · 96 km away
  45. 2.832 km ENE of Nikolski, Alaska · 469 days ago · 76 km deep · 71 km away
  46. 1.679 km SSW of Unalaska, Alaska · 469 days ago · 38 km deep · 99 km away
  47. 2.174 km E of Nikolski, Alaska · 465 days ago · 34 km deep · 89 km away
  48. 3.451 km SSW of Unalaska, Alaska · 464 days ago · 80 km deep · 92 km away
  49. 2.51 km E of Nikolski, Alaska · 463 days ago · 61 km deep · 90 km away
  50. 1.749 km SSW of Unalaska, Alaska · 462 days ago · 82 km deep · 95 km away
  51. 2.7101 km W of Dutch Harbor, Alaska · 461 days ago · 62 km deep · 18 km away
  52. 3.838 km SW of Unalaska, Alaska · 461 days ago · 99 km deep · 81 km away
  53. 2.133 km NNE of Nikolski, Alaska · 460 days ago · 91 km deep · 58 km away
  54. 1.588 km SSW of Unalaska, Alaska · 459 days ago · 25 km deep · 94 km away
  55. 1.690 km E of Nikolski, Alaska · 458 days ago · 55 km deep · 83 km away
  56. 2.544 km S of Unalaska, Alaska · 458 days ago · 77 km deep · 100 km away
  57. 1.577 km SSW of Unalaska, Alaska · 456 days ago · 55 km deep · 82 km away
  58. 1.669 km NNW of Nikolski, Alaska · 456 days ago · 20 km deep · 87 km away
  59. 1.980 km SSW of Unalaska, Alaska · 454 days ago · 61 km deep · 80 km away
  60. 1.790 km SSW of Unalaska, Alaska · 453 days ago · 41 km deep · 89 km away

The first 60 of 69.

Before

  1. 2.057 km SSW of Unalaska, Alaska · 505 days ago · 68 km deep · 80 km away
  2. 1.879 km NE of Nikolski, Alaska · 505 days ago · 117 km deep · 24 km away
  3. 1.670 km SSW of Unalaska, Alaska · 505 days ago · 21 km deep · 86 km away
  4. 1.999 km E of Nikolski, Alaska · 505 days ago · 37 km deep · 94 km away
  5. 3.280 km E of Nikolski, Alaska · 506 days ago · 35 km deep · 81 km away
  6. 1.687 km SSW of Unalaska, Alaska · 507 days ago · 26 km deep · 96 km away
  7. 2.251 km NNW of Nikolski, Alaska · 508 days ago · 3 km deep · 76 km away
  8. 2.145 km ESE of Nikolski, Alaska · 508 days ago · 24 km deep · 100 km away
  9. 1.895 km SSW of Unalaska, Alaska · 509 days ago · 13 km deep · 95 km away
  10. 2.577 km SW of Unalaska, Alaska · 510 days ago · 68 km deep · 73 km away
  11. 1.974 km SW of Unalaska, Alaska · 511 days ago · 13 km deep · 49 km away
  12. 4.348 km SSW of Unalaska, Alaska · 512 days ago · 74 km deep · 91 km away · felt by 10
  13. 1.875 km WSW of Unalaska, Alaska · 513 days ago · 13 km deep · 45 km away
  14. 2.433 km N of Nikolski, Alaska · 514 days ago · 130 km deep · 66 km away
  15. 1.873 km SW of Unalaska, Alaska · 514 days ago · 13 km deep · 47 km away
  16. 2.841 km NNE of Nikolski, Alaska · 515 days ago · 128 km deep · 50 km away
  17. 3.283 km SSW of Unalaska, Alaska · 517 days ago · 35 km deep · 100 km away
  18. 3.030 km ESE of Nikolski, Alaska · 517 days ago · 57 km deep · 88 km away
  19. 2.054 km SSW of Unalaska, Alaska · 517 days ago · 64 km deep · 87 km away
  20. 1.968 km SW of Unalaska, Alaska · 517 days ago · 14 km deep · 58 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0256fonbd2. Read Mon, Oct 5, 2026, 2:43 PM UTC.