Idaho earthquakes

M1.9 earthquake 4 km NNW of Challis, Idaho

A magnitude 1.9 earthquake struck 4 km NNW of Challis, Idaho on Thu, Oct 8, 2015, 11:46 AM MDT (17:46 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M3.0 8 km ESE of Challis, Idaho. This one was a foreshock.

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
1.9 (ml), micro
Local time
UTC
2015-10-08 17:46:04 UTC
Depth
-0.8 km (-0.5 mi), shallow
Epicenter
44.542° N, 114.260° 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.

Location uncertainty
About 0.8 km horizontally, 7.5 km in depth
Magnitude uncertainty
±0.19
Depth from
Operator assigned
Station coverage gap
69°
Stations used
9

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 15 in the 30 days before it.

After

  1. 2.014 km SE of Challis, Idaho · 4002 days ago · 10 km deep · 19 km away · felt by 1
  2. 1.929 km N of Sun Valley, Idaho · 4002 days ago · 10 km deep · 66 km away
  3. 1.814 km SE of Challis, Idaho · 4001 days ago · 11 km deep · 19 km away
  4. 1.632 km ESE of Clayton, Idaho · 3999 days ago · 4 km deep · 44 km away
  5. 2.113 km SE of Challis, Idaho · 3993 days ago · 10 km deep · 18 km away
  6. 1.722 km ESE of Challis, Idaho · 3993 days ago · 9 km deep · 26 km away
  7. 2.5southern Idaho · 3993 days ago · 4 km deep · 19 km away
  8. 2.07 km ESE of Challis, Idaho · 3991 days ago · 9 km deep · 12 km away
  9. 2.510 km ESE of Challis, Idaho · 3990 days ago · 11 km deep · 14 km away
  10. 3.08 km ESE of Challis, Idaho · 3990 days ago · 7 km deep · 12 km away · felt by 1
  11. 2.711 km NNW of Challis, Idaho · 3987 days ago · 4 km deep · 6 km away · felt by 1
  12. 2.110 km NNE of Stanley, Idaho · 3986 days ago · -1 km deep · 56 km away
  13. 2.411 km NNE of Stanley, Idaho · 3983 days ago · 8 km deep · 55 km away
  14. 1.615 km SE of Challis, Idaho · 3981 days ago · 6 km deep · 20 km away
  15. 1.914 km SE of Challis, Idaho · 3981 days ago · 9 km deep · 19 km away
  16. 1.832 km N of Mackay, Idaho · 3979 days ago · 10 km deep · 61 km away
  17. 1.65 km NNW of Challis, Idaho · 3979 days ago · -3 km deep · 1 km away
  18. 1.810 km NNE of Stanley, Idaho · 3973 days ago · -1 km deep · 56 km away
  19. 1.626 km SSW of Clayton, Idaho · 3972 days ago · 14 km deep · 60 km away
  20. 1.823 km NNW of Challis, Idaho · 3971 days ago · -3 km deep · 19 km away
  21. 2.021 km NNW of Challis, Idaho · 3967 days ago · 4 km deep · 17 km away
  22. 2.413 km ESE of Challis, Idaho · 3964 days ago · 11 km deep · 17 km away
  23. 2.013 km SE of Challis, Idaho · 3959 days ago · 7 km deep · 17 km away
  24. 1.611 km SE of Challis, Idaho · 3959 days ago · 4 km deep · 16 km away
  25. 1.911 km ESE of Challis, Idaho · 3953 days ago · 7 km deep · 16 km away
  26. 1.69 km NNW of Challis, Idaho · 3950 days ago · 5 km deep · 5 km away
  27. 1.919 km NW of Stanley, Idaho · 3948 days ago · 20 km deep · 71 km away
  28. 1.7southern Idaho · 3947 days ago · 3 km deep · 5 km away
  29. 1.612 km SE of Challis, Idaho · 3944 days ago · 5 km deep · 17 km away

Before

  1. 1.522 km WNW of Clayton, Idaho · 4004 days ago · 4 km deep · 38 km away
  2. 2.122 km WNW of Clayton, Idaho · 4004 days ago · 7 km deep · 37 km away
  3. 2.011 km SE of Challis, Idaho · 4008 days ago · 6 km deep · 15 km away
  4. 1.629 km N of Sun Valley, Idaho · 4011 days ago · 7 km deep · 65 km away
  5. 1.64 km NNW of Challis, Idaho · 4020 days ago · 8 km deep · 0 km away
  6. 1.8southern Idaho · 4021 days ago · 10 km deep · 1 km away
  7. 2.826 km W of Challis, Idaho · 4021 days ago · 5 km deep · 24 km away
  8. 1.914 km W of Clayton, Idaho · 4021 days ago · 6 km deep · 40 km away
  9. 1.513 km W of Clayton, Idaho · 4023 days ago · 10 km deep · 42 km away
  10. 2.013 km W of Clayton, Idaho · 4023 days ago · 9 km deep · 41 km away
  11. 3.310 km SE of Challis, Idaho · 4024 days ago · 10 km deep · 15 km away · felt by 4
  12. 2.030 km E of Clayton, Idaho · 4026 days ago · 5 km deep · 40 km away
  13. 1.913 km SE of Challis, Idaho · 4028 days ago · 13 km deep · 18 km away
  14. 2.524 km NW of Clayton, Idaho · 4032 days ago · 8 km deep · 36 km away
  15. 2.524 km SE of Challis, Idaho · 4033 days ago · 10 km deep · 29 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80100749. Read Thu, Sep 24, 2026, 12:59 PM UTC.