Alaska earthquakes

M1.8 earthquake 24 km N of Atka, Alaska

A magnitude 1.8 earthquake struck 24 km N of Atka, Alaska on Tue, Sep 16, 2025, 6:56 PM HADT (03:56 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.6 79 km WSW 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
1.8 (ML, local (Richter)), micro
Magnitude from
AV
Local time
UTC
2025-09-17 03:56:53 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
52.411° N, 174.161° 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 1.1 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.23
Depth from
From location
Station coverage gap
244°, poorly surrounded by stations
Stations used
8

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 27 in the 30 days before it.

After

  1. 1.939 km ENE of Atka, Alaska · 377 days ago · 27 km deep · 34 km away
  2. 3.451 km E of Atka, Alaska · 372 days ago · 10 km deep · 57 km away
  3. 2.230 km E of Atka, Alaska · 372 days ago · 7 km deep · 36 km away
  4. 2.783 km W of Atka, Alaska · 372 days ago · 225 km deep · 86 km away
  5. 3.192 km WNW of Atka, Alaska · 372 days ago · 215 km deep · 90 km away
  6. 2.155 km SSW of Atka, Alaska · 369 days ago · 63 km deep · 80 km away
  7. 3.679 km WSW of Atka, Alaska · 338 days ago · 60 km deep · 96 km away
  8. 1.716 km N of Atka, Alaska · 330 days ago · 4 km deep · 7 km away
  9. 2.117 km N of Atka, Alaska · 330 days ago · 4 km deep · 7 km away
  10. 1.616 km N of Atka, Alaska · 330 days ago · 4 km deep · 7 km away
  11. 1.616 km N of Atka, Alaska · 330 days ago · 5 km deep · 7 km away
  12. 2.327 km ENE of Atka, Alaska · 325 days ago · 95 km deep · 29 km away
  13. 3.167 km E of Atka, Alaska · 325 days ago · 91 km deep · 67 km away

Before

  1. 3.844 km SE of Atka, Alaska · 385 days ago · 41 km deep · 61 km away
  2. 4.178 km WNW of Atka, Alaska · 386 days ago · 219 km deep · 74 km away
  3. 1.518 km SW of Atka, Alaska · 388 days ago · 9 km deep · 39 km away
  4. 3.260 km ESE of Atka, Alaska · 389 days ago · 72 km deep · 72 km away
  5. 3.962 km NW of Atka, Alaska · 392 days ago · 209 km deep · 48 km away
  6. 1.585 km WSW of Atka, Alaska · 396 days ago · 17 km deep · 96 km away
  7. 2.139 km S of Atka, Alaska · 397 days ago · 68 km deep · 63 km away
  8. 4.099 km NW of Atka, Alaska · 399 days ago · 228 km deep · 84 km away
  9. 3.066 km S of Atka, Alaska · 399 days ago · 24 km deep · 91 km away
  10. 1.714 km N of Atka, Alaska · 400 days ago · 4 km deep · 10 km away
  11. 2.147 km ESE of Atka, Alaska · 402 days ago · 54 km deep · 62 km away
  12. 2.162 km ESE of Atka, Alaska · 403 days ago · 65 km deep · 72 km away
  13. 3.452 km ESE of Atka, Alaska · 403 days ago · 59 km deep · 64 km away
  14. 2.011 km SW of Atka, Alaska · 405 days ago · 16 km deep · 33 km away
  15. 2.070 km SSW of Atka, Alaska · 405 days ago · 40 km deep · 93 km away
  16. 3.865 km SE of Atka, Alaska · 406 days ago · 15 km deep · 82 km away
  17. 1.968 km SSW of Atka, Alaska · 407 days ago · 16 km deep · 93 km away
  18. 2.037 km WSW of Atka, Alaska · 408 days ago · 121 km deep · 55 km away
  19. 1.852 km SSW of Atka, Alaska · 408 days ago · 13 km deep · 76 km away
  20. 3.069 km SW of Atka, Alaska · 408 days ago · 35 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av93050219. Read Sun, Oct 4, 2026, 8:42 AM UTC.