M2.3 earthquake 32 km S of Lima, Montana
A magnitude 2.3 earthquake struck 32 km S of Lima, Montana on Wed, Oct 25, 2017, 10:06 PM MDT (04:06 UTC), 4 km (2 mi) below the surface.
A larger quake followed: M2.4 42 km NNE of Spencer, Idaho. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.3 (ML, local (Richter)), micro
- Magnitude from
- Montana Bureau of Mines and Geology
- Local time
- UTC
- 2017-10-26 04:06:21 UTC
- Depth
- 3.5 km (2.2 mi), shallow
- Epicenter
- 44.352° N, 112.669° 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.
- Location uncertainty
- About 0.3 km horizontally, 6.3 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- Operator assigned
- Station coverage gap
- 116°
- Stations used
- 14
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 1 in the 30 days before it.
After
- 1.641 km NNE of Spencer, Idaho · 3243 days ago · 13 km deep · 69 km away
- 2.25 km NNE of Lima, Montana · 3240 days ago · 10 km deep · 38 km away
- 2.442 km NNE of Spencer, Idaho · 3229 days ago · 6 km deep · 69 km away
- 2.033 km N of Spencer, Idaho · 3225 days ago · 7 km deep · 52 km away
- 1.740 km NNE of Spencer, Idaho · 3214 days ago · 7 km deep · 68 km away
- 2.224 km NNE of Lima, Montana · 3207 days ago · 1 km deep · 56 km away
Before
Earthquakes todayIdaho earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event mb80266569. Read Fri, Oct 2, 2026, 10:17 PM UTC.