Idaho earthquakes

M1.7 earthquake 52 km NW of Challis, Idaho

A magnitude 1.7 earthquake struck 52 km NW of Challis, Idaho on Mon, Aug 6, 2018, 5:31 PM MDT (23:31 UTC), 7 km (5 mi) below the surface.

A larger quake followed: M2.8 13 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
1.7 (ML, local (Richter)), micro
Magnitude from
Montana Bureau of Mines and Geology
Local time
UTC
2018-08-06 23:31:06 UTC
Depth
7.3 km (4.5 mi), shallow
Epicenter
44.883° N, 114.629° 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 2.9 km horizontally, 4.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
145°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 2.212 km W of Clayton, Idaho · 2977 days ago · 12 km deep · 69 km away
  2. 2.132 km NNW of Challis, Idaho · 2974 days ago · 5 km deep · 20 km away
  3. 1.727 km S of Clayton, Idaho · 2972 days ago · 4 km deep · 98 km away
  4. 1.931 km NNW of Challis, Idaho · 2971 days ago · 9 km deep · 22 km away
  5. 2.426 km NE of Challis, Idaho · 2969 days ago · 5 km deep · 59 km away
  6. 2.110 km W of Clayton, Idaho · 2965 days ago · 13 km deep · 70 km away
  7. 2.07 km N of Stanley, Idaho · 2959 days ago · 13 km deep · 71 km away
  8. 1.813 km NNE of Clayton, Idaho · 2959 days ago · 3 km deep · 60 km away
  9. 1.821 km N of Salmon, Idaho · 2955 days ago · 4 km deep · 80 km away
  10. 1.935 km ESE of Clayton, Idaho · 2954 days ago · 0 km deep · 95 km away
  11. 1.89 km N of Stanley, Idaho · 2950 days ago · 3 km deep · 70 km away
  12. 2.08 km N of Stanley, Idaho · 2950 days ago · 10 km deep · 70 km away
  13. 2.339 km NNW of Stanley, Idaho · 2949 days ago · 5 km deep · 50 km away
  14. 2.813 km SE of Challis, Idaho · 2939 days ago · 5 km deep · 65 km away · felt by 3
  15. 2.336 km ENE of Challis, Idaho · 2937 days ago · 11 km deep · 68 km away
  16. 2.434 km NE of Challis, Idaho · 2937 days ago · 11 km deep · 63 km away
  17. 1.610 km SE of Challis, Idaho · 2928 days ago · 7 km deep · 62 km away
  18. 2.18 km N of Stanley, Idaho · 2920 days ago · 4 km deep · 71 km away
  19. 2.43 km NW of Stanley, Idaho · 2920 days ago · 5 km deep · 76 km away
  20. 1.89 km N of Stanley, Idaho · 2920 days ago · 6 km deep · 70 km away
  21. 1.6southern Idaho · 2920 days ago · 6 km deep · 71 km away
  22. 2.512 km NNE of Stanley, Idaho · 2920 days ago · 5 km deep · 66 km away · felt by 1
  23. 1.67 km NNW of Stanley, Idaho · 2920 days ago · 5 km deep · 72 km away
  24. 1.67 km NNW of Stanley, Idaho · 2920 days ago · 4 km deep · 73 km away

Before

  1. 2.121 km NNW of Clayton, Idaho · 2994 days ago · 12 km deep · 52 km away
  2. 1.79 km NNW of Stanley, Idaho · 3003 days ago · 5 km deep · 70 km away
  3. 1.79 km NNW of Stanley, Idaho · 3003 days ago · 3 km deep · 70 km away
  4. 2.78 km NNW of Stanley, Idaho · 3003 days ago · 5 km deep · 70 km away
  5. 1.910 km N of Stanley, Idaho · 3004 days ago · 9 km deep · 69 km away
  6. 2.07 km N of Stanley, Idaho · 3004 days ago · 6 km deep · 71 km away
  7. 1.68 km N of Stanley, Idaho · 3004 days ago · 3 km deep · 70 km away
  8. 2.09 km NNW of Stanley, Idaho · 3004 days ago · 5 km deep · 71 km away
  9. 2.47 km NNW of Stanley, Idaho · 3004 days ago · 5 km deep · 72 km away
  10. 1.89 km N of Stanley, Idaho · 3004 days ago · 13 km deep · 69 km away
  11. 2.16 km N of Stanley, Idaho · 3004 days ago · 10 km deep · 72 km away
  12. 2.48 km N of Stanley, Idaho · 3004 days ago · 6 km deep · 71 km away
  13. 2.4southern Idaho · 3004 days ago · 7 km deep · 70 km away
  14. 2.67 km NNW of Stanley, Idaho · 3004 days ago · 5 km deep · 74 km away
  15. 3.29 km NNW of Stanley, Idaho · 3004 days ago · 5 km deep · 70 km away · felt by 8
  16. 1.79 km N of Stanley, Idaho · 3004 days ago · 7 km deep · 70 km away
  17. 2.46 km N of Stanley, Idaho · 3004 days ago · 5 km deep · 72 km away
  18. 2.310 km N of Stanley, Idaho · 3004 days ago · 5 km deep · 68 km away
  19. 2.18 km NNW of Stanley, Idaho · 3004 days ago · 7 km deep · 70 km away
  20. 1.910 km N of Stanley, Idaho · 3004 days ago · 8 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80305079. Read Sat, Oct 3, 2026, 8:29 AM UTC.