M3.6 earthquake 23 km SSW of Mammoth, Wyoming
A magnitude 3.6 earthquake struck 23 km SSW of Mammoth, Wyoming on Tue, Mar 5, 1985, 1:30 PM MST (20:30 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
- 3.6 (ml), minor
- Local time
- UTC
- 1985-03-05 20:30:40 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 44.776° N, 110.799° 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: 6 in the 60 days after this one and 8 in the 30 days before it.
After
- 3.223 km S of Mammoth, Wyoming · 15184 days ago · 5 km deep · 9 km away
- 2.319 km SSW of Mammoth, Wyoming · 15179 days ago · 28 km deep · 4 km away
- 3.529 km W of Hebgen Lake Estates, Montana · 15170 days ago · 5 km deep · 60 km away
- 2.041 km SSE of Mammoth, Wyoming · 15146 days ago · 2 km deep · 31 km away
- 1.821 km SSW of Mammoth, Wyoming · 15133 days ago · 12 km deep · 3 km away
- 1.9Idaho-Montana border region · 15129 days ago · 12 km deep · 40 km away
Before
- 1.620 km SSW of Mammoth, Wyoming · 15187 days ago · 5 km deep · 4 km away
- 1.620 km SSW of Mammoth, Wyoming · 15188 days ago · 6 km deep · 3 km away
- 1.921 km SSW of Mammoth, Wyoming · 15188 days ago · 11 km deep · 3 km away
- 2.420 km SSW of Mammoth, Wyoming · 15188 days ago · 12 km deep · 4 km away
- 1.520 km SSW of Mammoth, Wyoming · 15188 days ago · 5 km deep · 3 km away
- 2.820 km SSW of Mammoth, Wyoming · 15188 days ago · 12 km deep · 3 km away
- 2.520 km SSW of Mammoth, Wyoming · 15188 days ago · 11 km deep · 3 km away
- 1.835 km E of West Yellowstone, Montana · 15192 days ago · 3 km deep · 22 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002cg8. Read Wed, Sep 30, 2026, 7:51 PM UTC.