Alaska earthquakes

M1.5 earthquake 18 km SW of Atka, Alaska

A magnitude 1.5 earthquake struck 18 km SW of Atka, Alaska on Thu, Sep 11, 2025, 4:42 AM HADT (13:42 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M4.5 86 km S of Atka, 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
1.5 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2025-09-11 13:42:25 UTC
Depth
9.3 km (5.8 mi), shallow
Epicenter
52.096° N, 174.409° 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 1.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.39
Depth from
From location
Station coverage gap
329°, poorly surrounded by stations
Stations used
6

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 52 in the 30 days before it.

After

  1. 4.178 km WNW of Atka, Alaska · 385 days ago · 219 km deep · 72 km away
  2. 3.844 km SE of Atka, Alaska · 383 days ago · 41 km deep · 52 km away
  3. 1.824 km N of Atka, Alaska · 381 days ago · 3 km deep · 39 km away
  4. 1.939 km ENE of Atka, Alaska · 375 days ago · 27 km deep · 57 km away
  5. 4.586 km S of Atka, Alaska · 372 days ago · 16 km deep · 75 km away
  6. 3.451 km E of Atka, Alaska · 371 days ago · 10 km deep · 65 km away
  7. 2.230 km E of Atka, Alaska · 371 days ago · 7 km deep · 46 km away
  8. 2.783 km W of Atka, Alaska · 370 days ago · 225 km deep · 72 km away
  9. 3.192 km WNW of Atka, Alaska · 370 days ago · 215 km deep · 85 km away
  10. 3.983 km SW of Atka, Alaska · 369 days ago · 35 km deep · 65 km away
  11. 2.155 km SSW of Atka, Alaska · 367 days ago · 63 km deep · 43 km away
  12. 3.979 km NE of Adak, Alaska · 366 days ago · 222 km deep · 100 km away
  13. 4.4100 km SW of Atka, Alaska · 359 days ago · 35 km deep · 82 km away
  14. 1.989 km ESE of Adak, Alaska · 349 days ago · 19 km deep · 96 km away
  15. 3.679 km WSW of Atka, Alaska · 336 days ago · 60 km deep · 61 km away
  16. 1.716 km N of Atka, Alaska · 328 days ago · 4 km deep · 32 km away
  17. 2.117 km N of Atka, Alaska · 328 days ago · 4 km deep · 33 km away
  18. 1.616 km N of Atka, Alaska · 328 days ago · 4 km deep · 32 km away
  19. 1.616 km N of Atka, Alaska · 328 days ago · 5 km deep · 32 km away
  20. 4.098 km ESE of Adak, Alaska · 327 days ago · 41 km deep · 82 km away

Before

  1. 3.260 km ESE of Atka, Alaska · 388 days ago · 72 km deep · 69 km away
  2. 3.962 km NW of Atka, Alaska · 391 days ago · 209 km deep · 65 km away
  3. 2.582 km ESE of Adak, Alaska · 394 days ago · 50 km deep · 94 km away
  4. 1.585 km WSW of Atka, Alaska · 394 days ago · 17 km deep · 69 km away
  5. 2.139 km S of Atka, Alaska · 395 days ago · 68 km deep · 29 km away
  6. 2.7102 km SSE of Atka, Alaska · 395 days ago · 35 km deep · 97 km away
  7. 4.7107 km S of Atka, Alaska · 396 days ago · 13 km deep · 100 km away
  8. 4.598 km S of Atka, Alaska · 397 days ago · 10 km deep · 91 km away
  9. 3.066 km S of Atka, Alaska · 397 days ago · 24 km deep · 56 km away
  10. 4.080 km SSE of Atka, Alaska · 397 days ago · 35 km deep · 74 km away
  11. 3.788 km S of Atka, Alaska · 398 days ago · 35 km deep · 79 km away
  12. 2.7105 km SW of Atka, Alaska · 398 days ago · 35 km deep · 88 km away
  13. 1.714 km N of Atka, Alaska · 398 days ago · 4 km deep · 30 km away
  14. 2.678 km ENE of Adak, Alaska · 400 days ago · 182 km deep · 88 km away
  15. 2.147 km ESE of Atka, Alaska · 400 days ago · 54 km deep · 57 km away
  16. 1.989 km SW of Atka, Alaska · 400 days ago · 41 km deep · 71 km away
  17. 2.162 km ESE of Atka, Alaska · 401 days ago · 65 km deep · 74 km away
  18. 3.452 km ESE of Atka, Alaska · 401 days ago · 59 km deep · 63 km away
  19. 2.011 km SW of Atka, Alaska · 403 days ago · 16 km deep · 7 km away
  20. 2.070 km SSW of Atka, Alaska · 403 days ago · 40 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av93049804. Read Fri, Oct 2, 2026, 4:13 PM UTC.