M1.7 earthquake 27 km NW of Challis, Idaho
A magnitude 1.7 earthquake struck 27 km NW of Challis, Idaho on Tue, Apr 18, 2017, 12:06 AM MDT (06:06 UTC), 6 km (3 mi) below the surface.
A larger quake followed: M2.1 32 km WNW of Challis, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (ML, local (Richter)), micro
- Magnitude from
- Montana Bureau of Mines and Geology
- Local time
- UTC
- 2017-04-18 06:06:51 UTC
- Depth
- 5.6 km (3.5 mi), shallow
- Epicenter
- 44.686° N, 114.464° 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 0.5 km horizontally, 1.1 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- From location
- Station coverage gap
- 118°
- 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: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 1.614 km W of Clayton, Idaho · 3437 days ago · 3 km deep · 49 km away
- 2.132 km WNW of Challis, Idaho · 3430 days ago · 12 km deep · 18 km away
- 2.013 km W of Clayton, Idaho · 3417 days ago · 9 km deep · 47 km away
- 1.518 km NNW of Clayton, Idaho · 3406 days ago · 6 km deep · 30 km away
- 1.637 km NW of Challis, Idaho · 3403 days ago · 1 km deep · 11 km away
- 1.924 km E of Challis, Idaho · 3402 days ago · 3 km deep · 47 km away
- 2.123 km E of Challis, Idaho · 3400 days ago · 9 km deep · 46 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb80206179. Read Fri, Oct 2, 2026, 7:09 AM UTC.