Idaho earthquakes

M3.3 earthquake 10 km SE of Challis, Idaho

A magnitude 3.3 earthquake struck 10 km SE of Challis, Idaho on Thu, Sep 17, 2015, 8:02 PM MDT (02:02 UTC), 10 km (6 mi) below the surface.

Challis forecastMore in Idaho

Map

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

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The earthquake

Magnitude
3.3 (ml), minor
Local time
UTC
2015-09-18 02:02:00 UTC
Depth
10.3 km (6.4 mi), shallow
Epicenter
44.452° N, 114.123° W
Region
Idaho
Felt reports
4
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

4 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 3.8 km horizontally, 6.4 km in depth
Magnitude uncertainty
±0.17
Station coverage gap
57°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 32 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 2.013 km W of Clayton, Idaho · 4021 days ago · 9 km deep · 42 km away
  2. 1.513 km W of Clayton, Idaho · 4021 days ago · 10 km deep · 43 km away
  3. 1.914 km W of Clayton, Idaho · 4020 days ago · 6 km deep · 42 km away
  4. 2.826 km W of Challis, Idaho · 4019 days ago · 5 km deep · 36 km away
  5. 1.8southern Idaho · 4019 days ago · 10 km deep · 15 km away
  6. 1.64 km NNW of Challis, Idaho · 4019 days ago · 8 km deep · 15 km away
  7. 1.629 km N of Sun Valley, Idaho · 4009 days ago · 7 km deep · 58 km away
  8. 2.011 km SE of Challis, Idaho · 4006 days ago · 6 km deep · 1 km away
  9. 2.122 km WNW of Clayton, Idaho · 4003 days ago · 7 km deep · 43 km away
  10. 1.522 km WNW of Clayton, Idaho · 4002 days ago · 4 km deep · 44 km away
  11. 1.94 km NNW of Challis, Idaho · 4002 days ago · -1 km deep · 15 km away
  12. 2.014 km SE of Challis, Idaho · 4001 days ago · 10 km deep · 4 km away · felt by 1
  13. 1.929 km N of Sun Valley, Idaho · 4000 days ago · 10 km deep · 59 km away
  14. 1.814 km SE of Challis, Idaho · 3999 days ago · 11 km deep · 5 km away
  15. 1.632 km ESE of Clayton, Idaho · 3997 days ago · 4 km deep · 30 km away
  16. 2.113 km SE of Challis, Idaho · 3991 days ago · 10 km deep · 3 km away
  17. 1.722 km ESE of Challis, Idaho · 3991 days ago · 9 km deep · 12 km away
  18. 2.5southern Idaho · 3991 days ago · 4 km deep · 5 km away
  19. 2.07 km ESE of Challis, Idaho · 3989 days ago · 9 km deep · 3 km away
  20. 2.510 km ESE of Challis, Idaho · 3989 days ago · 11 km deep · 1 km away
  21. 3.08 km ESE of Challis, Idaho · 3988 days ago · 7 km deep · 2 km away · felt by 1
  22. 2.711 km NNW of Challis, Idaho · 3985 days ago · 4 km deep · 21 km away · felt by 1
  23. 2.110 km NNE of Stanley, Idaho · 3984 days ago · -1 km deep · 63 km away
  24. 2.411 km NNE of Stanley, Idaho · 3981 days ago · 8 km deep · 62 km away
  25. 1.615 km SE of Challis, Idaho · 3980 days ago · 6 km deep · 5 km away
  26. 1.914 km SE of Challis, Idaho · 3979 days ago · 9 km deep · 4 km away
  27. 1.832 km N of Mackay, Idaho · 3978 days ago · 10 km deep · 46 km away
  28. 1.65 km NNW of Challis, Idaho · 3978 days ago · -3 km deep · 16 km away
  29. 1.810 km NNE of Stanley, Idaho · 3971 days ago · -1 km deep · 62 km away
  30. 1.626 km SSW of Clayton, Idaho · 3970 days ago · 14 km deep · 55 km away
  31. 1.823 km NNW of Challis, Idaho · 3969 days ago · -3 km deep · 33 km away
  32. 2.021 km NNW of Challis, Idaho · 3965 days ago · 4 km deep · 30 km away

Before

  1. 2.030 km E of Clayton, Idaho · 4024 days ago · 5 km deep · 27 km away
  2. 1.913 km SE of Challis, Idaho · 4027 days ago · 13 km deep · 4 km away
  3. 2.524 km NW of Clayton, Idaho · 4030 days ago · 8 km deep · 43 km away
  4. 2.524 km SE of Challis, Idaho · 4032 days ago · 10 km deep · 15 km away
  5. 2.411 km SE of Challis, Idaho · 4033 days ago · 11 km deep · 1 km away
  6. 1.912 km ESE of Challis, Idaho · 4034 days ago · 4 km deep · 2 km away
  7. 1.515 km SE of Challis, Idaho · 4039 days ago · 7 km deep · 5 km away
  8. 1.636 km SSW of Salmon, Idaho · 4039 days ago · 10 km deep · 50 km away
  9. 1.913 km SE of Challis, Idaho · 4039 days ago · 9 km deep · 4 km away
  10. 2.615 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 6 km away
  11. 2.712 km SE of Challis, Idaho · 4039 days ago · 6 km deep · 2 km away
  12. 2.315 km SE of Challis, Idaho · 4039 days ago · 7 km deep · 5 km away
  13. 2.711 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 2 km away · felt by 1
  14. 2.339 km NNW of Challis, Idaho · 4048 days ago · 15 km deep · 49 km away
  15. 1.910 km SE of Challis, Idaho · 4049 days ago · 11 km deep · 1 km away
  16. 2.15 km NNW of Challis, Idaho · 4050 days ago · 11 km deep · 15 km away
  17. 2.121 km E of Challis, Idaho · 4051 days ago · 13 km deep · 13 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20003l29 (also filed as mb80098524). Read Wed, Sep 23, 2026, 12:27 AM UTC.