Alaska earthquakes

M2.7 earthquake 126 km SW of Nikolski, Alaska

A magnitude 2.7 earthquake struck 126 km SW of Nikolski, Alaska on Wed, Aug 27, 2025, 12:24 PM HADT (21:24 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.9 92 km SSW of Nikolski, 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-08-27 21:24:00 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
52.147° N, 170.191° 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
2.7ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 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 3.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
217°, poorly surrounded by stations
Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 34 in the 30 days before it.

After

  1. 2.145 km SW of Nikolski, Alaska · 401 days ago · 19 km deep · 81 km away
  2. 2.3158 km WSW of Nikolski, Alaska · 401 days ago · 45 km deep · 51 km away
  3. 4.1132 km SSW of Nikolski, Alaska · 400 days ago · 17 km deep · 34 km away
  4. 4.2114 km SW of Nikolski, Alaska · 396 days ago · 26 km deep · 20 km away
  5. 5.992 km SSW of Nikolski, Alaska · 395 days ago · 18 km deep · 47 km away · felt by 1 · tsunami flag
  6. 4.492 km SSW of Nikolski, Alaska · 395 days ago · 10 km deep · 49 km away
  7. 3.773 km SW of Nikolski, Alaska · 395 days ago · 39 km deep · 54 km away
  8. 4.6100 km SSW of Nikolski, Alaska · 395 days ago · 35 km deep · 50 km away
  9. 3.858 km WSW of Nikolski, Alaska · 395 days ago · 46 km deep · 79 km away
  10. 3.880 km SSW of Nikolski, Alaska · 395 days ago · 35 km deep · 54 km away
  11. 5.294 km SSW of Nikolski, Alaska · 395 days ago · 35 km deep · 48 km away · tsunami flag
  12. 5.292 km SSW of Nikolski, Alaska · 395 days ago · 35 km deep · 52 km away · felt by 1 · tsunami flag
  13. 3.584 km SSW of Nikolski, Alaska · 394 days ago · 35 km deep · 58 km away
  14. 3.793 km WSW of Nikolski, Alaska · 392 days ago · 63 km deep · 44 km away
  15. 3.764 km WSW of Nikolski, Alaska · 392 days ago · 52 km deep · 69 km away
  16. 5.481 km SSW of Nikolski, Alaska · 392 days ago · 38 km deep · 51 km away · tsunami flag
  17. 4.487 km SW of Nikolski, Alaska · 392 days ago · 35 km deep · 42 km away
  18. 4.5185 km SW of Nikolski, Alaska · 385 days ago · 19 km deep · 60 km away
  19. 5.1130 km SSW of Nikolski, Alaska · 383 days ago · 27 km deep · 47 km away
  20. 2.055 km SW of Nikolski, Alaska · 380 days ago · 13 km deep · 71 km away
  21. 3.666 km SW of Nikolski, Alaska · 379 days ago · 35 km deep · 60 km away
  22. 2.857 km SW of Nikolski, Alaska · 371 days ago · 10 km deep · 69 km away
  23. 1.861 km WSW of Nikolski, Alaska · 366 days ago · 8 km deep · 80 km away
  24. 1.662 km WSW of Nikolski, Alaska · 366 days ago · 10 km deep · 79 km away
  25. 1.659 km W of Nikolski, Alaska · 366 days ago · 7 km deep · 83 km away
  26. 1.775 km WSW of Nikolski, Alaska · 358 days ago · 8 km deep · 65 km away
  27. 2.085 km WSW of Nikolski, Alaska · 352 days ago · 8 km deep · 50 km away
  28. 4.4102 km SSW of Nikolski, Alaska · 350 days ago · 10 km deep · 55 km away
  29. 1.571 km WSW of Nikolski, Alaska · 343 days ago · 10 km deep · 74 km away

Before

  1. 2.758 km S of Nikolski, Alaska · 403 days ago · 35 km deep · 89 km away
  2. 2.9129 km WSW of Nikolski, Alaska · 405 days ago · 33 km deep · 69 km away
  3. 3.0167 km WSW of Nikolski, Alaska · 405 days ago · 35 km deep · 53 km away
  4. 4.3163 km SW of Nikolski, Alaska · 405 days ago · 10 km deep · 42 km away
  5. 2.8106 km S of Nikolski, Alaska · 407 days ago · 10 km deep · 74 km away
  6. 1.872 km SSW of Nikolski, Alaska · 410 days ago · 26 km deep · 72 km away
  7. 2.2130 km SSW of Nikolski, Alaska · 412 days ago · 11 km deep · 52 km away
  8. 2.0118 km SSW of Nikolski, Alaska · 412 days ago · 14 km deep · 45 km away
  9. 2.8137 km SSW of Nikolski, Alaska · 412 days ago · 10 km deep · 44 km away
  10. 2.5136 km SSW of Nikolski, Alaska · 414 days ago · 10 km deep · 37 km away
  11. 2.9158 km SW of Nikolski, Alaska · 414 days ago · 35 km deep · 34 km away
  12. 2.6120 km SSW of Nikolski, Alaska · 414 days ago · 23 km deep · 45 km away
  13. 2.6126 km SW of Nikolski, Alaska · 414 days ago · 26 km deep · 10 km away
  14. 4.1143 km SSW of Nikolski, Alaska · 414 days ago · 10 km deep · 46 km away
  15. 2.6136 km SSW of Nikolski, Alaska · 415 days ago · 10 km deep · 37 km away
  16. 2.6129 km SSW of Nikolski, Alaska · 415 days ago · 10 km deep · 37 km away
  17. 2.3143 km SSW of Nikolski, Alaska · 415 days ago · 10 km deep · 51 km away
  18. 2.7136 km SSW of Nikolski, Alaska · 415 days ago · 10 km deep · 38 km away
  19. 5.2144 km SSW of Nikolski, Alaska · 416 days ago · 10 km deep · 35 km away
  20. 4.7139 km SSW of Nikolski, Alaska · 416 days ago · 10 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rlst (also filed as ak025azm37bu). Read Sun, Oct 4, 2026, 7:41 AM UTC.