Idaho earthquakes

M1.5 earthquake 15 km SE of Challis, Idaho

A magnitude 1.5 earthquake struck 15 km SE of Challis, Idaho on Wed, Sep 2, 2015, 3:24 AM MDT (09:24 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M1.9 12 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
1.5 (ml), micro
Local time
UTC
2015-09-02 09:24:49 UTC
Depth
7.3 km (4.5 mi), shallow
Epicenter
44.414° N, 114.082° 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 0.7 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
101°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 33 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 1.912 km ESE of Challis, Idaho · 4034 days ago · 4 km deep · 4 km away
  2. 2.411 km SE of Challis, Idaho · 4033 days ago · 11 km deep · 5 km away
  3. 2.524 km SE of Challis, Idaho · 4032 days ago · 10 km deep · 10 km away
  4. 2.524 km NW of Clayton, Idaho · 4030 days ago · 8 km deep · 46 km away
  5. 1.913 km SE of Challis, Idaho · 4027 days ago · 13 km deep · 2 km away
  6. 2.030 km E of Clayton, Idaho · 4024 days ago · 5 km deep · 22 km away
  7. 3.310 km SE of Challis, Idaho · 4023 days ago · 10 km deep · 5 km away · felt by 4
  8. 2.013 km W of Clayton, Idaho · 4021 days ago · 9 km deep · 43 km away
  9. 1.513 km W of Clayton, Idaho · 4021 days ago · 10 km deep · 44 km away
  10. 1.914 km W of Clayton, Idaho · 4020 days ago · 6 km deep · 43 km away
  11. 2.826 km W of Challis, Idaho · 4019 days ago · 5 km deep · 41 km away
  12. 1.8southern Idaho · 4019 days ago · 10 km deep · 20 km away
  13. 1.64 km NNW of Challis, Idaho · 4019 days ago · 8 km deep · 20 km away
  14. 1.629 km N of Sun Valley, Idaho · 4009 days ago · 7 km deep · 56 km away
  15. 2.011 km SE of Challis, Idaho · 4006 days ago · 6 km deep · 5 km away
  16. 2.122 km WNW of Clayton, Idaho · 4002 days ago · 7 km deep · 45 km away
  17. 1.522 km WNW of Clayton, Idaho · 4002 days ago · 4 km deep · 46 km away
  18. 1.94 km NNW of Challis, Idaho · 4002 days ago · -1 km deep · 20 km away
  19. 2.014 km SE of Challis, Idaho · 4001 days ago · 10 km deep · 1 km away · felt by 1
  20. 1.929 km N of Sun Valley, Idaho · 4000 days ago · 10 km deep · 56 km away
  21. 1.814 km SE of Challis, Idaho · 3999 days ago · 11 km deep · 1 km away
  22. 1.632 km ESE of Clayton, Idaho · 3997 days ago · 4 km deep · 25 km away
  23. 2.113 km SE of Challis, Idaho · 3991 days ago · 10 km deep · 2 km away
  24. 1.722 km ESE of Challis, Idaho · 3991 days ago · 9 km deep · 8 km away
  25. 2.5southern Idaho · 3991 days ago · 4 km deep · 3 km away
  26. 2.07 km ESE of Challis, Idaho · 3989 days ago · 9 km deep · 8 km away
  27. 2.510 km ESE of Challis, Idaho · 3989 days ago · 11 km deep · 6 km away
  28. 3.08 km ESE of Challis, Idaho · 3988 days ago · 7 km deep · 8 km away · felt by 1
  29. 2.711 km NNW of Challis, Idaho · 3985 days ago · 4 km deep · 26 km away · felt by 1
  30. 2.110 km NNE of Stanley, Idaho · 3984 days ago · -1 km deep · 65 km away
  31. 2.411 km NNE of Stanley, Idaho · 3981 days ago · 8 km deep · 64 km away
  32. 1.615 km SE of Challis, Idaho · 3980 days ago · 6 km deep · 1 km away
  33. 1.914 km SE of Challis, Idaho · 3979 days ago · 9 km deep · 1 km away

Before

  1. 1.636 km SSW of Salmon, Idaho · 4039 days ago · 10 km deep · 54 km away
  2. 1.913 km SE of Challis, Idaho · 4039 days ago · 9 km deep · 3 km away
  3. 2.615 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 1 km away
  4. 2.712 km SE of Challis, Idaho · 4039 days ago · 6 km deep · 3 km away
  5. 2.315 km SE of Challis, Idaho · 4039 days ago · 7 km deep · 1 km away
  6. 2.711 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 4 km away · felt by 1
  7. 2.339 km NNW of Challis, Idaho · 4048 days ago · 15 km deep · 54 km away
  8. 1.910 km SE of Challis, Idaho · 4049 days ago · 11 km deep · 6 km away
  9. 2.15 km NNW of Challis, Idaho · 4050 days ago · 11 km deep · 21 km away
  10. 2.121 km E of Challis, Idaho · 4051 days ago · 13 km deep · 12 km away
  11. 1.68 km NE of Stanley, Idaho · 4053 days ago · 6 km deep · 65 km away
  12. 2.09 km NNE of Stanley, Idaho · 4054 days ago · 13 km deep · 65 km away
  13. 1.87 km NW of Challis, Idaho · 4054 days ago · 6 km deep · 23 km away
  14. 1.96 km NW of Challis, Idaho · 4055 days ago · 4 km deep · 23 km away
  15. 1.630 km WNW of Mackay, Idaho · 4057 days ago · 12 km deep · 41 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80096029. Read Tue, Sep 22, 2026, 11:28 PM UTC.