Alaska earthquakes

M1.6 earthquake 34 km S of Chignik, Alaska

A magnitude 1.6 earthquake struck 34 km S of Chignik, Alaska on Thu, Aug 21, 2025, 2:50 AM AKDT (10:50 UTC), 84 km (52 mi) below the surface.

A larger quake followed: M3.4 57 km SSE of Perryville, 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
1.6 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-08-21 10:50:44 UTC
Depth
84.3 km (52.4 mi), intermediate-depth
Epicenter
55.986° N, 158.374° 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
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 28 in the 30 days before it.

After

  1. 2.960 km SE of Chignik, Alaska · 407 days ago · 38 km deep · 48 km away
  2. 2.319 km SSW of Ivanof Bay, Alaska · 406 days ago · 5 km deep · 79 km away
  3. 1.813 km NW of Chignik Lake, Alaska · 405 days ago · 7 km deep · 52 km away
  4. 1.613 km NW of Chignik Lake, Alaska · 403 days ago · 5 km deep · 52 km away
  5. 1.923 km WSW of Chignik Lake, Alaska · 401 days ago · 6 km deep · 49 km away
  6. 2.326 km N of Chignik, Alaska · 394 days ago · 95 km deep · 61 km away
  7. 1.938 km ESE of Chignik, Alaska · 392 days ago · 32 km deep · 37 km away
  8. 2.595 km E of Chignik, Alaska · 382 days ago · 17 km deep · 99 km away
  9. 2.843 km ESE of Perryville, Alaska · 381 days ago · 36 km deep · 18 km away
  10. 1.720 km S of Ivanof Bay, Alaska · 374 days ago · 12 km deep · 73 km away
  11. 1.629 km NNE of Chignik, Alaska · 369 days ago · 85 km deep · 63 km away
  12. 1.930 km ESE of Perryville, Alaska · 369 days ago · 49 km deep · 24 km away
  13. 2.992 km ESE of Chignik, Alaska · 368 days ago · 76 km deep · 80 km away
  14. 2.251 km SSE of Perryville, Alaska · 365 days ago · 16 km deep · 60 km away
  15. 2.653 km ESE of Chignik, Alaska · 361 days ago · 70 km deep · 52 km away
  16. 3.457 km SSE of Perryville, Alaska · 357 days ago · 20 km deep · 59 km away
  17. 2.515 km SSE of Perryville, Alaska · 352 days ago · 62 km deep · 47 km away
  18. 1.714 km S of Chignik, Alaska · 351 days ago · 85 km deep · 20 km away

Before

  1. 1.572 km SE of Perryville, Alaska · 410 days ago · 25 km deep · 60 km away
  2. 1.667 km SSE of Chignik, Alaska · 412 days ago · 26 km deep · 40 km away
  3. 1.561 km ENE of Chignik, Alaska · 412 days ago · 67 km deep · 82 km away
  4. 1.635 km SE of Perryville, Alaska · 413 days ago · 49 km deep · 37 km away
  5. 1.99 km NNW of Chignik Lagoon, Alaska · 413 days ago · 91 km deep · 46 km away
  6. 2.379 km ENE of Chignik, Alaska · 413 days ago · 67 km deep · 93 km away
  7. 2.461 km SE of Perryville, Alaska · 413 days ago · 26 km deep · 54 km away
  8. 1.525 km N of Perryville, Alaska · 413 days ago · 8 km deep · 50 km away
  9. 1.730 km WNW of Chignik Lake, Alaska · 417 days ago · 100 km deep · 65 km away
  10. 1.734 km E of Perryville, Alaska · 419 days ago · 63 km deep · 14 km away
  11. 2.069 km S of Ivanof Bay, Alaska · 420 days ago · 10 km deep · 98 km away
  12. 2.121 km N of Perryville, Alaska · 420 days ago · 102 km deep · 51 km away
  13. 2.623 km ENE of Perryville, Alaska · 423 days ago · 65 km deep · 26 km away
  14. 2.261 km SSE of Chignik, Alaska · 423 days ago · 68 km deep · 28 km away
  15. 2.076 km S of Perryville, Alaska · 424 days ago · 23 km deep · 99 km away
  16. 2.451 km SE of Perryville, Alaska · 424 days ago · 42 km deep · 46 km away
  17. 2.338 km SSW of Ivanof Bay, Alaska · 424 days ago · 74 km deep · 96 km away
  18. 2.08 km ESE of Chignik, Alaska · 425 days ago · 71 km deep · 32 km away
  19. 2.373 km ESE of Chignik, Alaska · 426 days ago · 41 km deep · 67 km away
  20. 2.270 km SE of Perryville, Alaska · 426 days ago · 11 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak025apih0cq. Read Mon, Oct 5, 2026, 3:35 AM UTC.