M3.1 earthquake 10 km S of Challis, Idaho
A magnitude 3.1 earthquake struck 10 km S of Challis, Idaho on Sun, Mar 23, 1986, 7:26 AM MST (14:26 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M4.1 19 km SSE 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
- 3.1 (ml), minor
- Local time
- UTC
- 1986-03-23 14:26:11 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.407° N, 114.213° 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 1 in the 30 days before it.
After
- 4.119 km SSE of Challis, Idaho · 14778 days ago · 5 km deep · 8 km away
- 3.019 km E of Clayton, Idaho · 14772 days ago · 5 km deep · 15 km away
- 3.524 km E of Clayton, Idaho · 14769 days ago · 5 km deep · 18 km away
- 3.022 km SSE of Challis, Idaho · 14768 days ago · 5 km deep · 12 km away
- 2.89 km S of Stanley, Idaho · 14765 days ago · 5 km deep · 64 km away
- 2.631 km ESE of Leadore, Idaho · 14759 days ago · 5 km deep · 97 km away
- 2.539 km N of Stanley, Idaho · 14757 days ago · 5 km deep · 56 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002s5w. Read Tue, Sep 22, 2026, 10:02 AM UTC.