Idaho earthquakes

M4.0 earthquake 22 km SE of Stanley, Idaho

A magnitude 4.0 earthquake struck 22 km SE of Stanley, Idaho on Wed, Sep 3, 1986, 10:38 PM MDT (04:38 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.3 26 km SE of Stanley, Idaho. 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
4.0 (ml), light
Local time
UTC
1986-09-04 04:38:20 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
44.066° N, 114.745° W
Region
Idaho
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.

Depth from
OPERATOR_ASSIGNED

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.326 km SE of Stanley, Idaho · 14628 days ago · 5 km deep · 4 km away
  2. 4.027 km SSE of Stanley, Idaho · 14627 days ago · 5 km deep · 6 km away
  3. 3.430 km SSE of Stanley, Idaho · 14627 days ago · 5 km deep · 10 km away
  4. 3.525 km SSE of Stanley, Idaho · 14626 days ago · 5 km deep · 6 km away
  5. 3.526 km SE of Stanley, Idaho · 14622 days ago · 5 km deep · 4 km away
  6. 3.431 km SSE of Stanley, Idaho · 14622 days ago · 5 km deep · 16 km away
  7. 4.025 km SE of Stanley, Idaho · 14622 days ago · 5 km deep · 4 km away
  8. 3.131 km SSE of Stanley, Idaho · 14618 days ago · 5 km deep · 11 km away
  9. 3.524 km SE of Stanley, Idaho · 14616 days ago · 5 km deep · 2 km away
  10. 3.424 km SE of Stanley, Idaho · 14610 days ago · 5 km deep · 3 km away
  11. 3.727 km SSE of Stanley, Idaho · 14608 days ago · 5 km deep · 7 km away
  12. 4.326 km SE of Stanley, Idaho · 14606 days ago · 5 km deep · 6 km away
  13. 4.624 km SE of Stanley, Idaho · 14606 days ago · 5 km deep · 3 km away
  14. 3.325 km SSE of Stanley, Idaho · 14605 days ago · 5 km deep · 6 km away
  15. 3.322 km SE of Stanley, Idaho · 14605 days ago · 5 km deep · 3 km away
  16. 3.832 km SSE of Stanley, Idaho · 14605 days ago · 5 km deep · 13 km away
  17. 3.627 km WNW of Mackay, Idaho · 14602 days ago · 5 km deep · 65 km away
  18. 3.029 km SSE of Stanley, Idaho · 14601 days ago · 5 km deep · 10 km away
  19. 3.132 km SSE of Stanley, Idaho · 14593 days ago · 5 km deep · 12 km away
  20. 3.930 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 7 km away
  21. 3.925 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 3 km away
  22. 3.626 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 5 km away

Before

  1. 3.427 km SSE of Stanley, Idaho · 14629 days ago · 5 km deep · 9 km away
  2. 3.924 km SE of Stanley, Idaho · 14629 days ago · 5 km deep · 3 km away
  3. 3.225 km SSE of Stanley, Idaho · 14629 days ago · 5 km deep · 7 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002xtm. Read Tue, Sep 22, 2026, 4:12 PM UTC.