M1.5 earthquake 2 km W of Silver Summit, Utah
A magnitude 1.5 earthquake struck 2 km W of Silver Summit, Utah on Tue, Aug 25, 1987, 6:07 PM MDT (00:07 UTC), 11 km (7 mi) below the surface.
A larger quake followed: M1.9 5 km SSE of Wallsburg, Utah. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1987-08-26 00:07:19 UTC
- Depth
- 10.8 km (6.7 mi), shallow
- Epicenter
- 40.741° N, 111.517° 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 0.6 km horizontally, 1.1 km in depth
- Depth from
- From location
- Station coverage gap
- 97°
- Stations used
- 18
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 4 in the 30 days before it.
After
- 1.95 km SSE of Wallsburg, Utah · 14258 days ago · 5 km deep · 45 km away
- 2.01 km SSE of Charleston, Utah · 14252 days ago · 0 km deep · 33 km away
- 1.89 km SSE of Morgan, Utah · 14228 days ago · 10 km deep · 26 km away
Before
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50033295. Read Tue, Sep 22, 2026, 5:19 PM UTC.