Idaho earthquakes

M2.6 earthquake 13 km NW of Challis, Idaho

A magnitude 2.6 earthquake struck 13 km NW of Challis, Idaho on Wed, Jul 22, 2015, 5:52 PM MDT (23:52 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M3.3 10 km SE 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
2.6 (md), micro
Local time
UTC
2015-07-22 23:52:19 UTC
Depth
9.1 km (5.7 mi), shallow
Epicenter
44.600° N, 114.329° 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.

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 4.0 km horizontally, 3.8 km in depth
Station coverage gap
104°
Stations used
30

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 8 in the 30 days before it.

After

  1. 2.311 km SE of Challis, Idaho · 4086 days ago · 10 km deep · 24 km away
  2. 1.914 km SE of Challis, Idaho · 4086 days ago · 13 km deep · 27 km away
  3. 2.113 km SE of Challis, Idaho · 4086 days ago · 14 km deep · 26 km away
  4. 2.238 km NNE of Challis, Idaho · 4085 days ago · 14 km deep · 35 km away
  5. 2.311 km NW of Challis, Idaho · 4083 days ago · 11 km deep · 1 km away
  6. 2.010 km NW of Challis, Idaho · 4083 days ago · 9 km deep · 2 km away
  7. 1.630 km WNW of Mackay, Idaho · 4065 days ago · 12 km deep · 68 km away
  8. 1.96 km NW of Challis, Idaho · 4063 days ago · 4 km deep · 6 km away
  9. 1.87 km NW of Challis, Idaho · 4062 days ago · 6 km deep · 5 km away
  10. 2.09 km NNE of Stanley, Idaho · 4061 days ago · 13 km deep · 55 km away
  11. 1.68 km NE of Stanley, Idaho · 4061 days ago · 6 km deep · 56 km away
  12. 2.121 km E of Challis, Idaho · 4059 days ago · 13 km deep · 32 km away
  13. 2.15 km NNW of Challis, Idaho · 4058 days ago · 11 km deep · 8 km away
  14. 1.910 km SE of Challis, Idaho · 4057 days ago · 11 km deep · 23 km away
  15. 2.339 km NNW of Challis, Idaho · 4056 days ago · 15 km deep · 27 km away
  16. 2.711 km SE of Challis, Idaho · 4047 days ago · 5 km deep · 24 km away · felt by 1
  17. 2.315 km SE of Challis, Idaho · 4047 days ago · 7 km deep · 28 km away
  18. 2.712 km SE of Challis, Idaho · 4047 days ago · 6 km deep · 26 km away
  19. 2.615 km SE of Challis, Idaho · 4047 days ago · 5 km deep · 29 km away
  20. 1.913 km SE of Challis, Idaho · 4047 days ago · 9 km deep · 26 km away
  21. 1.636 km SSW of Salmon, Idaho · 4047 days ago · 10 km deep · 37 km away
  22. 1.515 km SE of Challis, Idaho · 4047 days ago · 7 km deep · 29 km away
  23. 2.138 km NE of Yellow Pine, Idaho · 4044 days ago · 5 km deep · 88 km away
  24. 2.236 km NE of Yellow Pine, Idaho · 4044 days ago · 11 km deep · 94 km away
  25. 1.912 km ESE of Challis, Idaho · 4042 days ago · 4 km deep · 25 km away
  26. 2.411 km SE of Challis, Idaho · 4041 days ago · 11 km deep · 24 km away
  27. 2.524 km SE of Challis, Idaho · 4040 days ago · 10 km deep · 38 km away
  28. 2.524 km NW of Clayton, Idaho · 4038 days ago · 8 km deep · 35 km away
  29. 1.913 km SE of Challis, Idaho · 4034 days ago · 13 km deep · 27 km away
  30. 2.030 km E of Clayton, Idaho · 4032 days ago · 5 km deep · 49 km away
  31. 3.310 km SE of Challis, Idaho · 4031 days ago · 10 km deep · 23 km away · felt by 4
  32. 2.013 km W of Clayton, Idaho · 4029 days ago · 9 km deep · 44 km away
  33. 1.513 km W of Clayton, Idaho · 4029 days ago · 10 km deep · 45 km away

Before

  1. 2.43 km ENE of Challis, Idaho · 4096 days ago · 11 km deep · 15 km away
  2. 2.38 km NW of Challis, Idaho · 4103 days ago · 5 km deep · 5 km away
  3. 1.810 km SE of Challis, Idaho · 4106 days ago · 8 km deep · 23 km away
  4. 2.011 km SSE of Challis, Idaho · 4106 days ago · 13 km deep · 24 km away
  5. 2.38 km ESE of Challis, Idaho · 4106 days ago · 10 km deep · 21 km away
  6. 2.413 km NW of Challis, Idaho · 4112 days ago · 5 km deep · 2 km away
  7. 2.413 km NW of Challis, Idaho · 4112 days ago · 5 km deep · 2 km away
  8. 2.027 km SSW of Yellow Pine, Idaho · 4115 days ago · 10 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000335x (also filed as mb15789709). Read Wed, Sep 30, 2026, 9:58 PM UTC.