M3.5 earthquake 39 km ESE of Challis, Idaho
A magnitude 3.5 earthquake struck 39 km ESE of Challis, Idaho on Sat, Mar 23, 1985, 11:03 AM MST (18:03 UTC), 5 km (3 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.5 (ml), minor
- Local time
- UTC
- 1985-03-23 18:03:53 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.358° N, 113.777° 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: 13 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.441 km ESE of Challis, Idaho · 15158 days ago · 5 km deep · 6 km away
- 3.126 km NW of Clayton, Idaho · 15156 days ago · 10 km deep · 68 km away
- 3.130 km NW of Mackay, Idaho · 15150 days ago · 5 km deep · 27 km away
- 3.214 km ENE of Clayton, Idaho · 15141 days ago · 10 km deep · 36 km away
- 3.031 km WNW of Lima, Montana · 15140 days ago · 5 km deep · 81 km away
- 3.030 km WNW of Mackay, Idaho · 15136 days ago · 5 km deep · 45 km away
- 3.3Idaho-Montana border region · 15133 days ago · 10 km deep · 29 km away
- 3.34 km SW of Challis, Idaho · 15130 days ago · 10 km deep · 41 km away
- 3.15 km SW of Challis, Idaho · 15114 days ago · 5 km deep · 41 km away
- 3.023 km S of Clayton, Idaho · 15111 days ago · 5 km deep · 59 km away
- 3.113 km NE of Challis, Idaho · 15110 days ago · 5 km deep · 38 km away
- 3.225 km NW of Mackay, Idaho · 15107 days ago · 5 km deep · 36 km away
- 3.012 km NNW of Clayton, Idaho · 15107 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 usp0002d58. Read Tue, Sep 22, 2026, 5:28 PM UTC.