Idaho earthquakes

M2.6 earthquake 7 km SE of Challis, Idaho

A magnitude 2.6 earthquake struck 7 km SE of Challis, Idaho on Tue, Apr 21, 2015, 4:17 AM MDT (10:17 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M3.3 12 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 (ml), micro
Local time
UTC
2015-04-21 10:17:03 UTC
Depth
12.0 km (7.5 mi), shallow
Epicenter
44.461° N, 114.166° 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 4.9 km horizontally, 7.4 km in depth
Station coverage gap
53°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 40 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.337 km NW of Challis, Idaho · 4173 days ago · 11 km deep · 44 km away
  2. 1.923 km SW of Leadore, Idaho · 4168 days ago · 11 km deep · 48 km away
  3. 2.116 km W of Clayton, Idaho · 4168 days ago · 11 km deep · 41 km away
  4. 2.89 km NW of Challis, Idaho · 4168 days ago · 8 km deep · 17 km away · felt by 2
  5. 2.312 km NW of Challis, Idaho · 4167 days ago · 5 km deep · 19 km away
  6. 2.69 km NW of Challis, Idaho · 4167 days ago · 7 km deep · 16 km away · felt by 3
  7. 2.69 km NW of Challis, Idaho · 4167 days ago · 6 km deep · 16 km away
  8. 2.011 km SE of Challis, Idaho · 4165 days ago · 9 km deep · 4 km away
  9. 2.311 km NNE of Stanley, Idaho · 4165 days ago · 13 km deep · 58 km away
  10. 1.910 km NNE of Stanley, Idaho · 4163 days ago · 11 km deep · 59 km away
  11. 2.010 km NE of Stanley, Idaho · 4162 days ago · 8 km deep · 58 km away
  12. 2.99 km NW of Challis, Idaho · 4160 days ago · 7 km deep · 17 km away
  13. 1.811 km NNE of Stanley, Idaho · 4158 days ago · 11 km deep · 58 km away
  14. 2.410 km NNE of Stanley, Idaho · 4157 days ago · 11 km deep · 60 km away
  15. 1.911 km NNE of Stanley, Idaho · 4157 days ago · 9 km deep · 59 km away
  16. 2.710 km NNE of Stanley, Idaho · 4157 days ago · 13 km deep · 59 km away
  17. 2.08 km NNE of Stanley, Idaho · 4157 days ago · 10 km deep · 60 km away
  18. 2.010 km NE of Stanley, Idaho · 4157 days ago · 12 km deep · 59 km away
  19. 1.811 km NNE of Stanley, Idaho · 4157 days ago · 11 km deep · 60 km away
  20. 2.011 km NNE of Stanley, Idaho · 4157 days ago · 13 km deep · 59 km away
  21. 2.112 km NNE of Stanley, Idaho · 4156 days ago · 13 km deep · 59 km away
  22. 2.011 km NNE of Stanley, Idaho · 4156 days ago · 11 km deep · 59 km away
  23. 3.012 km NNE of Stanley, Idaho · 4156 days ago · 12 km deep · 59 km away · felt by 2
  24. 1.810 km NE of Stanley, Idaho · 4156 days ago · 13 km deep · 58 km away
  25. 1.911 km NNE of Stanley, Idaho · 4156 days ago · 12 km deep · 58 km away
  26. 2.111 km NNE of Stanley, Idaho · 4156 days ago · 14 km deep · 58 km away
  27. 2.612 km NNE of Stanley, Idaho · 4150 days ago · 18 km deep · 57 km away
  28. 3.312 km SE of Challis, Idaho · 4147 days ago · 6 km deep · 5 km away · felt by 2
  29. 3.011 km NNE of Stanley, Idaho · 4145 days ago · 13 km deep · 60 km away
  30. 2.012 km SE of Challis, Idaho · 4141 days ago · 10 km deep · 6 km away
  31. 1.98 km NW of Challis, Idaho · 4139 days ago · 8 km deep · 16 km away
  32. 2.311 km ESE of Challis, Idaho · 4138 days ago · 12 km deep · 5 km away
  33. 1.617 km S of Clayton, Idaho · 4134 days ago · 7 km deep · 46 km away
  34. 1.540 km ESE of Salmon, Idaho · 4133 days ago · 10 km deep · 93 km away
  35. 2.337 km NW of Challis, Idaho · 4128 days ago · 11 km deep · 45 km away
  36. 2.09 km NW of Challis, Idaho · 4128 days ago · 7 km deep · 17 km away
  37. 3.214 km SE of Challis, Idaho · 4127 days ago · 5 km deep · 8 km away
  38. 1.635 km SSE of Salmon, Idaho · 4126 days ago · 10 km deep · 56 km away
  39. 2.322 km NNE of Sun Valley, Idaho · 4125 days ago · 13 km deep · 64 km away
  40. 2.313 km WNW of Clayton, Idaho · 4124 days ago · 12 km deep · 38 km away

Before

  1. 1.623 km SW of Leadore, Idaho · 4184 days ago · 13 km deep · 48 km away
  2. 2.110 km SE of Challis, Idaho · 4191 days ago · 12 km deep · 4 km away
  3. 2.518 km NE of Leadore, Idaho · 4192 days ago · 12 km deep · 86 km away
  4. 2.08 km SE of Challis, Idaho · 4193 days ago · 12 km deep · 1 km away
  5. 2.115 km NNW of Challis, Idaho · 4197 days ago · 4 km deep · 23 km away
  6. 2.012 km N of Challis, Idaho · 4197 days ago · 11 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us200028gn (also filed as mb15821538). Read Thu, Sep 24, 2026, 12:43 PM UTC.