M3.1 earthquake 25 km WNW of Lima, Montana
A magnitude 3.1 earthquake struck 25 km WNW of Lima, Montana on Thu, May 30, 1985, 10:13 PM MDT (04:13 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.3 20 km ESE 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
- 1985-05-31 04:13:22 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.698° N, 112.906° W
- Region
- Montana
- 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.927 km NW of Lima, Montana · 15081 days ago · 5 km deep · 13 km away
- 3.028 km NNW of Lima, Montana · 15080 days ago · 5 km deep · 26 km away
- 3.320 km ESE of Challis, Idaho · 15050 days ago · 5 km deep · 91 km away
- 3.511 km ESE of Challis, Idaho · 15038 days ago · 5 km deep · 97 km away
Before
Earthquakes todayMontana earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002fc4. Read Mon, Sep 21, 2026, 8:25 PM UTC.