M2.3 earthquake 53 km SSW of Bonanza, Utah
A magnitude 2.3 earthquake struck 53 km SSW of Bonanza, Utah on Wed, Aug 18, 1982, 2:54 PM MDT (20:54 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M2.5 20 km NW of East Carbon City, Utah. 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 (md), micro
- Local time
- UTC
- 1982-08-18 20:54:11 UTC
- Depth
- 6.3 km (3.9 mi), shallow
- Epicenter
- 39.592° N, 109.457° 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 2.0 km horizontally, 1.0 km in depth
- Depth from
- From location
- Station coverage gap
- 219°, poorly surrounded by stations
- Stations used
- 22
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
- 2.117 km NNW of Sunnyside, Utah · 16104 days ago · 16 km deep · 85 km away
- 2.520 km NW of East Carbon City, Utah · 16089 days ago · 12 km deep · 95 km away
Before
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50005445. Read Sun, Sep 27, 2026, 4:29 PM UTC.