M2.4 earthquake 15 km S of Challis, Idaho
A magnitude 2.4 earthquake struck 15 km S of Challis, Idaho on Sun, Oct 6, 1985, 12:07 AM MDT (06:07 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.3 7 km SE 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
- 2.4 (ml), micro
- Local time
- UTC
- 1985-10-06 06:07:23 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.364° N, 114.258° 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: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.37 km SE of Challis, Idaho · 14958 days ago · 5 km deep · 12 km away
- 3.18 km SE of Challis, Idaho · 14958 days ago · 5 km deep · 13 km away
- 3.06 km NW of Challis, Idaho · 14948 days ago · 5 km deep · 21 km away
- 4.117 km SE of Challis, Idaho · 14938 days ago · 5 km deep · 15 km away
- 3.215 km SSE of Challis, Idaho · 14938 days ago · 5 km deep · 8 km away
- 3.434 km SE of Clayton, Idaho · 14905 days ago · 5 km deep · 36 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002khd. Read Tue, Sep 22, 2026, 3:35 PM UTC.