M3.7 earthquake 22 km NNE of Challis, Idaho
A magnitude 3.7 earthquake struck 22 km NNE of Challis, Idaho on Thu, Jan 17, 1985, 8:38 PM MST (03:38 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.7 6 km NE 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
- 3.7 (ml), minor
- Local time
- UTC
- 1985-01-18 03:38:07 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 44.703° N, 114.151° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.88 km WSW of Challis, Idaho · 15209 days ago · 10 km deep · 28 km away
- 3.410 km N of Clayton, Idaho · 15209 days ago · 10 km deep · 44 km away
- 4.76 km NE of Challis, Idaho · 15209 days ago · 10 km deep · 17 km away
- 3.710 km SSE of Challis, Idaho · 15209 days ago · 10 km deep · 31 km away
- 3.014 km NNW of Clayton, Idaho · 15205 days ago · 5 km deep · 46 km away
- 3.85 km S of Challis, Idaho · 15204 days ago · 10 km deep · 28 km away
- 3.219 km NNW of Leadore, Idaho · 15204 days ago · 5 km deep · 61 km away
- 3.023 km S of Leadore, Idaho · 15196 days ago · 5 km deep · 67 km away
- 3.33 km E of Challis, Idaho · 15191 days ago · 10 km deep · 23 km away
- 3.14 km SE of Challis, Idaho · 15189 days ago · 10 km deep · 25 km away
- 4.56 km NE of Challis, Idaho · 15171 days ago · 10 km deep · 17 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002b4z. Read Tue, Sep 29, 2026, 3:01 AM UTC.