M2.5 earthquake 49 km SSW of Bonanza, Utah
A magnitude 2.5 earthquake struck 49 km SSW of Bonanza, Utah on Thu, Feb 25, 1982, 1:20 PM MST (20:20 UTC), 2 km (1 mi) below the surface.
A larger quake followed: M2.5 20 km E of Kenilworth, Utah. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (md), micro
- Local time
- UTC
- 1982-02-25 20:20:04 UTC
- Depth
- 1.8 km (1.1 mi), shallow
- Epicenter
- 39.620° N, 109.441° 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 2.1 km horizontally, 1.0 km in depth
- Depth from
- From location
- Station coverage gap
- 219°, poorly surrounded by stations
- Stations used
- 28
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
- 2.16 km WNW of East Carbon City, Utah · 16268 days ago · 8 km deep · 90 km away
- 2.520 km E of Kenilworth, Utah · 16261 days ago · 6 km deep · 97 km away
Before
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50003835. Read Tue, Sep 22, 2026, 7:54 AM UTC.