M3.1 earthquake 38 km ENE of Warm River, Idaho
A magnitude 3.1 earthquake struck 38 km ENE of Warm River, Idaho on Tue, Mar 7, 1978, 12:39 AM MST (07:39 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.2 44 km ENE of Kelly, Wyoming. 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, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-03-07 07:39:33 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.304° N, 110.918° 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.
- Stations used
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayMontana earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000t91. Read Sat, Oct 3, 2026, 7:45 PM UTC.