M1.6 earthquake 8 km NNW of Henefer, Utah
A magnitude 1.6 earthquake struck 8 km NNW of Henefer, Utah on Thu, Oct 17, 1985, 2:29 PM MDT (20:29 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M2.7 16 km SE of Avon, Utah. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (md), micro
- Local time
- UTC
- 1985-10-17 20:29:44 UTC
- Depth
- 6.8 km (4.2 mi), shallow
- Epicenter
- 41.090° N, 111.536° W
- Region
- Utah
- 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 2.3 km horizontally, 2.8 km in depth
- Depth from
- From location
- Station coverage gap
- 206°, poorly surrounded by stations
- Stations used
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 7 in the 30 days before it.
After
- 2.716 km SE of Avon, Utah · 14946 days ago · 2 km deep · 40 km away
- 2.111 km WNW of Garden City, Utah · 14911 days ago · -1 km deep · 99 km away
- 1.611 km ENE of Eden, Utah · 14902 days ago · 9 km deep · 31 km away
Before
- 1.6Utah · 14960 days ago · 6 km deep · 67 km away
- 2.53 km WSW of Wellsville, Utah · 14964 days ago · 3 km deep · 70 km away
- 2.08 km SW of Thatcher, Utah · 14973 days ago · 4 km deep · 94 km away
- 2.78 km W of Thatcher, Utah · 14973 days ago · 6 km deep · 97 km away
- 2.321 km WSW of Oakley, Wyoming · 14974 days ago · 5 km deep · 91 km away
- 1.77 km WSW of Thatcher, Utah · 14974 days ago · 1 km deep · 96 km away
- 1.727 km NNE of Tabiona, Utah · 14979 days ago · 6 km deep · 96 km away
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50025515. Read Tue, Sep 22, 2026, 4:16 PM UTC.