M1.8 earthquake 34km SSE of Primm, NV
A magnitude 1.8 earthquake struck 34km SSE of Primm, NV on Thu, Dec 5, 1985, 4:29 PM PST (00:29 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M2.6 32km E of Tecopa, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (mc), micro
- Local time
- UTC
- 1985-12-06 00:29:35 UTC
- Depth
- 4.9 km (3.1 mi), shallow
- Epicenter
- 35.333° N, 115.250° W
- Region
- Nevada
- 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
- Station coverage gap
- 297°, poorly surrounded by stations
- Stations used
- 0
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.632km E of Tecopa, CA · 14884 days ago · 5 km deep · 78 km away
- 2.435km ENE of Tecopa, CA · 14883 days ago · 5 km deep · 84 km away
Before
Earthquakes todayNevada earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci133331. Read Tue, Sep 22, 2026, 3:20 AM UTC.