Alaska earthquakes

M3.7 earthquake 73 km SW of Nikolski, Alaska

A magnitude 3.7 earthquake struck 73 km SW of Nikolski, Alaska on Wed, Sep 3, 2025, 1:18 PM AKDT (21:18 UTC), 39 km (24 mi) below the surface.

A larger quake followed: M5.4 81 km SSW of Nikolski, 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
3.7 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-09-03 21:18:42 UTC
Depth
39.2 km (24.4 mi), shallow
Epicenter
52.424° N, 169.536° 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.

Location uncertainty
About 6.9 km horizontally, 8.8 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
176°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 37 in the 30 days before it.

After

  1. 4.6100 km SSW of Nikolski, Alaska · 394 days ago · 35 km deep · 34 km away
  2. 3.858 km WSW of Nikolski, Alaska · 394 days ago · 46 km deep · 42 km away
  3. 3.880 km SSW of Nikolski, Alaska · 394 days ago · 35 km deep · 15 km away
  4. 5.294 km SSW of Nikolski, Alaska · 393 days ago · 35 km deep · 27 km away · tsunami flag
  5. 5.292 km SSW of Nikolski, Alaska · 393 days ago · 35 km deep · 27 km away · felt by 1 · tsunami flag
  6. 3.584 km SSW of Nikolski, Alaska · 393 days ago · 35 km deep · 23 km away
  7. 3.237 km SSE of Nikolski, Alaska · 393 days ago · 37 km deep · 67 km away
  8. 3.793 km WSW of Nikolski, Alaska · 391 days ago · 63 km deep · 39 km away
  9. 3.764 km WSW of Nikolski, Alaska · 391 days ago · 52 km deep · 34 km away
  10. 5.481 km SSW of Nikolski, Alaska · 391 days ago · 38 km deep · 12 km away · tsunami flag
  11. 4.487 km SW of Nikolski, Alaska · 391 days ago · 35 km deep · 15 km away
  12. 3.333 km ESE of Nikolski, Alaska · 383 days ago · 52 km deep · 93 km away
  13. 5.1130 km SSW of Nikolski, Alaska · 382 days ago · 27 km deep · 61 km away
  14. 2.055 km SW of Nikolski, Alaska · 378 days ago · 13 km deep · 25 km away
  15. 3.666 km SW of Nikolski, Alaska · 377 days ago · 35 km deep · 15 km away
  16. 2.857 km SW of Nikolski, Alaska · 370 days ago · 10 km deep · 16 km away
  17. 1.861 km WSW of Nikolski, Alaska · 364 days ago · 8 km deep · 47 km away
  18. 1.662 km WSW of Nikolski, Alaska · 364 days ago · 10 km deep · 45 km away
  19. 1.659 km W of Nikolski, Alaska · 364 days ago · 7 km deep · 49 km away
  20. 3.891 km SSE of Nikolski, Alaska · 360 days ago · 29 km deep · 75 km away
  21. 1.775 km WSW of Nikolski, Alaska · 357 days ago · 8 km deep · 40 km away
  22. 2.085 km WSW of Nikolski, Alaska · 351 days ago · 8 km deep · 35 km away
  23. 4.4102 km SSW of Nikolski, Alaska · 348 days ago · 10 km deep · 40 km away
  24. 1.571 km WSW of Nikolski, Alaska · 342 days ago · 10 km deep · 47 km away
  25. 3.8158 km SW of Nikolski, Alaska · 340 days ago · 41 km deep · 89 km away
  26. 1.955 km W of Nikolski, Alaska · 334 days ago · -1 km deep · 63 km away

Before

  1. 4.492 km SSW of Nikolski, Alaska · 394 days ago · 10 km deep · 25 km away
  2. 5.992 km SSW of Nikolski, Alaska · 394 days ago · 18 km deep · 24 km away · felt by 1 · tsunami flag
  3. 4.2114 km SW of Nikolski, Alaska · 394 days ago · 26 km deep · 41 km away
  4. 1.935 km ESE of Nikolski, Alaska · 395 days ago · 61 km deep · 90 km away
  5. 4.1132 km SSW of Nikolski, Alaska · 398 days ago · 17 km deep · 60 km away
  6. 2.3158 km WSW of Nikolski, Alaska · 399 days ago · 45 km deep · 95 km away
  7. 2.145 km SW of Nikolski, Alaska · 400 days ago · 19 km deep · 32 km away
  8. 2.7126 km SW of Nikolski, Alaska · 401 days ago · 35 km deep · 54 km away
  9. 2.758 km S of Nikolski, Alaska · 402 days ago · 35 km deep · 39 km away
  10. 2.9129 km WSW of Nikolski, Alaska · 404 days ago · 33 km deep · 86 km away
  11. 4.3163 km SW of Nikolski, Alaska · 404 days ago · 10 km deep · 90 km away
  12. 2.8106 km S of Nikolski, Alaska · 406 days ago · 10 km deep · 55 km away
  13. 2.788 km SSE of Nikolski, Alaska · 408 days ago · 10 km deep · 78 km away
  14. 1.872 km SSW of Nikolski, Alaska · 408 days ago · 26 km deep · 28 km away
  15. 1.916 km ENE of Nikolski, Alaska · 409 days ago · 31 km deep · 88 km away
  16. 3.489 km SSE of Nikolski, Alaska · 410 days ago · 10 km deep · 89 km away
  17. 2.796 km SSE of Nikolski, Alaska · 410 days ago · 10 km deep · 84 km away
  18. 2.88 km NE of Nikolski, Alaska · 410 days ago · 74 km deep · 82 km away
  19. 2.2130 km SSW of Nikolski, Alaska · 411 days ago · 11 km deep · 63 km away
  20. 2.0118 km SSW of Nikolski, Alaska · 411 days ago · 14 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rd5m. Read Fri, Oct 2, 2026, 11:28 PM UTC.