Alaska earthquakes

M1.8 earthquake 76 km S of Unalaska, Alaska

A magnitude 1.8 earthquake struck 76 km S of Unalaska, Alaska on Mon, Aug 18, 2025, 5:04 PM AKDT (01:04 UTC), 50 km (31 mi) below the surface.

A larger quake followed: M5.1 49 km S of Akutan, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2025-08-19 01:04:08 UTC
Depth
49.9 km (31.0 mi), shallow
Epicenter
53.198° N, 166.743° 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
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 29 in the 60 days after this one and 78 in the 30 days before it.

After

  1. 1.781 km SSE of Unalaska, Alaska · 409 days ago · 21 km deep · 45 km away
  2. 1.874 km ESE of Nikolski, Alaska · 406 days ago · 25 km deep · 90 km away
  3. 1.7110 km ESE of Nikolski, Alaska · 406 days ago · 11 km deep · 90 km away
  4. 3.166 km SE of Unalaska, Alaska · 406 days ago · 35 km deep · 63 km away
  5. 2.674 km SSE of Unalaska, Alaska · 405 days ago · 35 km deep · 33 km away
  6. 1.7110 km E of Nikolski, Alaska · 405 days ago · 38 km deep · 48 km away
  7. 1.875 km SE of Unalaska, Alaska · 404 days ago · 39 km deep · 77 km away
  8. 1.587 km SSW of Unalaska, Alaska · 404 days ago · 26 km deep · 12 km away
  9. 2.624 km SE of Unalaska, Alaska · 404 days ago · 74 km deep · 69 km away
  10. 1.860 km SSE of Unalaska, Alaska · 403 days ago · 53 km deep · 45 km away
  11. 1.630 km SSW of Unalaska, Alaska · 402 days ago · 78 km deep · 46 km away
  12. 1.850 km SW of Unalaska, Alaska · 402 days ago · 18 km deep · 45 km away
  13. 1.921 km ESE of Unalaska, Alaska · 400 days ago · 79 km deep · 74 km away
  14. 1.926 km SE of Unalaska, Alaska · 398 days ago · 72 km deep · 70 km away
  15. 2.3103 km E of Nikolski, Alaska · 398 days ago · 47 km deep · 56 km away
  16. 2.593 km WSW of Unalaska, Alaska · 398 days ago · 100 km deep · 79 km away
  17. 1.9102 km SE of Unalaska, Alaska · 396 days ago · 13 km deep · 75 km away
  18. 2.1144 km ESE of Nikolski, Alaska · 396 days ago · 6 km deep · 85 km away
  19. 1.567 km SE of Unalaska, Alaska · 395 days ago · 26 km deep · 59 km away
  20. 1.933 km SW of Unalaska, Alaska · 395 days ago · 75 km deep · 48 km away
  21. 2.616 km SE of Unalaska, Alaska · 395 days ago · 81 km deep · 68 km away
  22. 2.755 km SW of Unalaska, Alaska · 395 days ago · 17 km deep · 42 km away
  23. 2.111 km NW of Dutch Harbor, Alaska · 374 days ago · 11 km deep · 84 km away
  24. 2.924 km ENE of Dutch Harbor, Alaska · 370 days ago · 127 km deep · 96 km away
  25. 1.753 km SW of Unalaska, Alaska · 370 days ago · 15 km deep · 53 km away
  26. 3.789 km E of Nikolski, Alaska · 367 days ago · 82 km deep · 57 km away
  27. 3.765 km SE of Unalaska, Alaska · 363 days ago · 53 km deep · 63 km away
  28. 3.070 km ESE of Nikolski, Alaska · 352 days ago · 35 km deep · 89 km away
  29. 5.149 km S of Akutan, Alaska · 350 days ago · 85 km deep · 81 km away · felt by 20 · tsunami flag

Before

  1. 2.634 km SW of Unalaska, Alaska · 410 days ago · 79 km deep · 54 km away
  2. 1.7101 km SSW of Unalaska, Alaska · 410 days ago · 32 km deep · 44 km away
  3. 1.596 km SSW of Unalaska, Alaska · 410 days ago · 26 km deep · 27 km away
  4. 1.6106 km ESE of Nikolski, Alaska · 410 days ago · 2 km deep · 76 km away
  5. 1.593 km SSW of Unalaska, Alaska · 410 days ago · 26 km deep · 25 km away
  6. 1.554 km SW of Unalaska, Alaska · 411 days ago · 16 km deep · 49 km away
  7. 1.984 km SSW of Unalaska, Alaska · 412 days ago · 28 km deep · 9 km away
  8. 3.469 km NE of Nikolski, Alaska · 412 days ago · 121 km deep · 98 km away
  9. 2.0151 km SSE of Unalaska, Alaska · 413 days ago · 30 km deep · 100 km away
  10. 1.635 km SSW of Unalaska, Alaska · 413 days ago · 71 km deep · 41 km away
  11. 1.527 km SE of Unalaska, Alaska · 413 days ago · 69 km deep · 61 km away
  12. 1.991 km SSW of Unalaska, Alaska · 414 days ago · 31 km deep · 19 km away
  13. 2.049 km SW of Unalaska, Alaska · 414 days ago · 17 km deep · 43 km away
  14. 3.329 km SE of Unalaska, Alaska · 415 days ago · 81 km deep · 70 km away
  15. 2.524 km SSW of Akutan, Alaska · 415 days ago · 83 km deep · 98 km away
  16. 1.950 km SW of Unalaska, Alaska · 416 days ago · 13 km deep · 40 km away
  17. 1.749 km SW of Unalaska, Alaska · 416 days ago · 19 km deep · 46 km away
  18. 1.749 km SW of Unalaska, Alaska · 416 days ago · 16 km deep · 45 km away
  19. 3.490 km SSW of Unalaska, Alaska · 416 days ago · 35 km deep · 16 km away
  20. 3.438 km S of Unalaska, Alaska · 417 days ago · 69 km deep · 39 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak025am1rhf0. Read Fri, Oct 2, 2026, 5:44 PM UTC.