Idaho earthquakes

M4.3 earthquake 26 km SE of Stanley, Idaho

A magnitude 4.3 earthquake struck 26 km SE of Stanley, Idaho on Fri, Sep 26, 1986, 3:28 PM MDT (21:28 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.6 24 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
4.3 (ml), light
Local time
UTC
1986-09-26 21:28:08 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
44.016° N, 114.750° 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: 15 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 4.624 km SE of Stanley, Idaho · 14605 days ago · 5 km deep · 3 km away
  2. 3.325 km SSE of Stanley, Idaho · 14605 days ago · 5 km deep · 2 km away
  3. 3.322 km SE of Stanley, Idaho · 14605 days ago · 5 km deep · 5 km away
  4. 3.832 km SSE of Stanley, Idaho · 14605 days ago · 5 km deep · 8 km away
  5. 3.627 km WNW of Mackay, Idaho · 14602 days ago · 5 km deep · 65 km away
  6. 3.029 km SSE of Stanley, Idaho · 14601 days ago · 5 km deep · 5 km away
  7. 3.132 km SSE of Stanley, Idaho · 14593 days ago · 5 km deep · 6 km away
  8. 3.930 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 6 km away
  9. 3.925 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 6 km away
  10. 3.626 km SE of Stanley, Idaho · 14588 days ago · 5 km deep · 8 km away
  11. 3.527 km ESE of Clayton, Idaho · 14567 days ago · 5 km deep · 58 km away
  12. 3.021 km SSW of Clayton, Idaho · 14564 days ago · 5 km deep · 22 km away
  13. 3.830 km SSE of Stanley, Idaho · 14562 days ago · 5 km deep · 4 km away
  14. 3.327 km SE of Stanley, Idaho · 14562 days ago · 5 km deep · 2 km away
  15. 3.029 km SE of Stanley, Idaho · 14559 days ago · 5 km deep · 3 km away

Before

  1. 3.727 km SSE of Stanley, Idaho · 14608 days ago · 5 km deep · 1 km away
  2. 3.424 km SE of Stanley, Idaho · 14610 days ago · 5 km deep · 3 km away
  3. 3.524 km SE of Stanley, Idaho · 14616 days ago · 5 km deep · 6 km away
  4. 3.131 km SSE of Stanley, Idaho · 14618 days ago · 5 km deep · 5 km away
  5. 4.025 km SE of Stanley, Idaho · 14621 days ago · 5 km deep · 7 km away
  6. 3.431 km SSE of Stanley, Idaho · 14621 days ago · 5 km deep · 11 km away
  7. 3.526 km SE of Stanley, Idaho · 14621 days ago · 5 km deep · 5 km away
  8. 3.525 km SSE of Stanley, Idaho · 14626 days ago · 5 km deep · 3 km away
  9. 3.430 km SSE of Stanley, Idaho · 14627 days ago · 5 km deep · 4 km away
  10. 4.027 km SSE of Stanley, Idaho · 14627 days ago · 5 km deep · 1 km away
  11. 3.326 km SE of Stanley, Idaho · 14628 days ago · 5 km deep · 3 km away
  12. 4.022 km SE of Stanley, Idaho · 14628 days ago · 5 km deep · 6 km away
  13. 3.427 km SSE of Stanley, Idaho · 14628 days ago · 5 km deep · 5 km away
  14. 3.924 km SE of Stanley, Idaho · 14629 days ago · 5 km deep · 3 km away
  15. 3.225 km SSE of Stanley, Idaho · 14629 days ago · 5 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002yds. Read Tue, Sep 22, 2026, 9:16 AM UTC.