Idaho earthquakes

M1.7 earthquake 14 km SE of Challis, Idaho

A magnitude 1.7 earthquake struck 14 km SE of Challis, Idaho on Tue, Oct 17, 2017, 2:29 AM MDT (08:29 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.4 22 km SSW of Clayton, 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
2017-10-17 08:29:56 UTC
Depth
13.4 km (8.3 mi), shallow
Epicenter
44.404° N, 114.115° 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 0.8 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.30
Depth from
From location
Station coverage gap
109°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.86 km NW of Challis, Idaho · 3262 days ago · 6 km deep · 21 km away
  2. 2.025 km SE of Challis, Idaho · 3261 days ago · 7 km deep · 11 km away
  3. 1.722 km SSW of Clayton, Idaho · 3251 days ago · 9 km deep · 48 km away
  4. 2.222 km SSW of Clayton, Idaho · 3251 days ago · 6 km deep · 48 km away
  5. 2.422 km SSW of Clayton, Idaho · 3244 days ago · 10 km deep · 48 km away · felt by 4
  6. 1.620 km ENE of Challis, Idaho · 3236 days ago · 9 km deep · 24 km away
  7. 1.622 km SSW of Clayton, Idaho · 3233 days ago · 7 km deep · 49 km away
  8. 2.316 km S of Clayton, Idaho · 3230 days ago · 10 km deep · 39 km away
  9. 1.822 km SSW of Clayton, Idaho · 3229 days ago · 8 km deep · 48 km away
  10. 2.023 km SSW of Clayton, Idaho · 3229 days ago · 14 km deep · 48 km away
  11. 2.021 km SSW of Clayton, Idaho · 3229 days ago · 6 km deep · 48 km away
  12. 2.322 km SSW of Clayton, Idaho · 3229 days ago · 11 km deep · 48 km away
  13. 1.822 km SSW of Clayton, Idaho · 3229 days ago · 6 km deep · 48 km away
  14. 1.921 km SSW of Clayton, Idaho · 3227 days ago · 7 km deep · 48 km away
  15. 2.122 km SSW of Clayton, Idaho · 3227 days ago · 13 km deep · 47 km away
  16. 1.812 km SE of Challis, Idaho · 3222 days ago · 5 km deep · 2 km away

Before

  1. 1.913 km W of Clayton, Idaho · 3276 days ago · 4 km deep · 39 km away
  2. 1.614 km W of Clayton, Idaho · 3285 days ago · 4 km deep · 40 km away
  3. 2.6southern Idaho · 3294 days ago · 5 km deep · 10 km away · felt by 1
  4. 2.18 km N of Stanley, Idaho · 3300 days ago · 4 km deep · 66 km away
  5. 2.19 km N of Stanley, Idaho · 3300 days ago · 10 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event mb80262234. Read Sun, Oct 4, 2026, 1:38 PM UTC.