M3.1 earthquake 5 km SW of Challis, Idaho
A magnitude 3.1 earthquake struck 5 km SW of Challis, Idaho on Mon, May 6, 1985, 5:34 PM MDT (23:34 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.2 25 km NW of Mackay, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (ml), minor
- Local time
- UTC
- 1985-05-06 23:34:19 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.467° N, 114.275° 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: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.023 km S of Clayton, Idaho · 15111 days ago · 5 km deep · 47 km away
- 3.113 km NE of Challis, Idaho · 15110 days ago · 5 km deep · 19 km away
- 3.225 km NW of Mackay, Idaho · 15107 days ago · 5 km deep · 57 km away
- 3.012 km NNW of Clayton, Idaho · 15107 days ago · 5 km deep · 20 km away
- 3.416 km E of Clayton, Idaho · 15081 days ago · 10 km deep · 24 km away
- 3.01 km ESE of Challis, Idaho · 15078 days ago · 5 km deep · 6 km away
- 3.015 km S of Clayton, Idaho · 15062 days ago · 5 km deep · 40 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002eh4. Read Tue, Sep 22, 2026, 12:48 PM UTC.