Idaho earthquakes

M1.8 earthquake 10 km SE of Challis, Idaho

A magnitude 1.8 earthquake struck 10 km SE of Challis, Idaho on Sat, Jul 4, 2015, 10:46 PM MDT (04:46 UTC), 8 km (5 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M2.3 8 km NW 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
1.8 (mc), micro
Local time
UTC
2015-07-05 04:46:28 UTC
Depth
7.9 km (4.9 mi), shallow
Epicenter
44.436° N, 114.148° W
Region
Idaho
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty
About 0.7 km horizontally, 1.3 km in depth
Magnitude uncertainty
±0.50
Station coverage gap
94°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.38 km NW of Challis, Idaho · 4095 days ago · 5 km deep · 18 km away
  2. 2.43 km ENE of Challis, Idaho · 4088 days ago · 11 km deep · 9 km away
  3. 1.924 km ENE of Leadore, Idaho · 4086 days ago · 7 km deep · 93 km away
  4. 2.613 km NW of Challis, Idaho · 4080 days ago · 9 km deep · 23 km away
  5. 2.311 km SE of Challis, Idaho · 4078 days ago · 10 km deep · 2 km away
  6. 1.914 km SE of Challis, Idaho · 4078 days ago · 13 km deep · 4 km away
  7. 2.113 km SE of Challis, Idaho · 4078 days ago · 14 km deep · 4 km away
  8. 2.238 km NNE of Challis, Idaho · 4077 days ago · 14 km deep · 43 km away
  9. 2.311 km NW of Challis, Idaho · 4075 days ago · 11 km deep · 22 km away
  10. 2.010 km NW of Challis, Idaho · 4075 days ago · 9 km deep · 21 km away
  11. 1.630 km WNW of Mackay, Idaho · 4057 days ago · 12 km deep · 45 km away
  12. 1.96 km NW of Challis, Idaho · 4055 days ago · 4 km deep · 17 km away
  13. 1.87 km NW of Challis, Idaho · 4054 days ago · 6 km deep · 18 km away
  14. 2.09 km NNE of Stanley, Idaho · 4054 days ago · 13 km deep · 60 km away
  15. 1.68 km NE of Stanley, Idaho · 4053 days ago · 6 km deep · 60 km away
  16. 2.121 km E of Challis, Idaho · 4051 days ago · 13 km deep · 15 km away
  17. 2.15 km NNW of Challis, Idaho · 4050 days ago · 11 km deep · 16 km away
  18. 1.910 km SE of Challis, Idaho · 4049 days ago · 11 km deep · 2 km away
  19. 2.339 km NNW of Challis, Idaho · 4048 days ago · 15 km deep · 50 km away
  20. 2.711 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 2 km away · felt by 1
  21. 2.315 km SE of Challis, Idaho · 4039 days ago · 7 km deep · 5 km away
  22. 2.712 km SE of Challis, Idaho · 4039 days ago · 6 km deep · 4 km away
  23. 2.615 km SE of Challis, Idaho · 4039 days ago · 5 km deep · 6 km away
  24. 1.913 km SE of Challis, Idaho · 4039 days ago · 9 km deep · 3 km away
  25. 1.636 km SSW of Salmon, Idaho · 4039 days ago · 10 km deep · 52 km away
  26. 1.515 km SE of Challis, Idaho · 4039 days ago · 7 km deep · 6 km away

Before

  1. 2.011 km SSE of Challis, Idaho · 4098 days ago · 13 km deep · 2 km away
  2. 2.38 km ESE of Challis, Idaho · 4098 days ago · 10 km deep · 4 km away
  3. 2.413 km NW of Challis, Idaho · 4104 days ago · 5 km deep · 24 km away
  4. 2.413 km NW of Challis, Idaho · 4104 days ago · 5 km deep · 24 km away
  5. 1.528 km ENE of Leadore, Idaho · 4112 days ago · 13 km deep · 97 km away
  6. 2.313 km WNW of Clayton, Idaho · 4122 days ago · 12 km deep · 38 km away
  7. 2.322 km NNE of Sun Valley, Idaho · 4123 days ago · 13 km deep · 61 km away
  8. 1.635 km SSE of Salmon, Idaho · 4125 days ago · 10 km deep · 57 km away
  9. 3.214 km SE of Challis, Idaho · 4125 days ago · 5 km deep · 6 km away
  10. 2.09 km NW of Challis, Idaho · 4126 days ago · 7 km deep · 20 km away
  11. 2.337 km NW of Challis, Idaho · 4127 days ago · 11 km deep · 48 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb15584537. Read Tue, Sep 22, 2026, 10:25 PM UTC.