M1.5 earthquake 5 km W of Koosharem, Utah
A magnitude 1.5 earthquake struck 5 km W of Koosharem, Utah on Fri, May 15, 1981, 10:11 AM MDT (16:11 UTC), 14 km (9 mi) below the surface.
A larger quake followed: M2.5 27 km SW of Emery, 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, duration), micro
- Magnitude from
- University of Utah Seismograph Stations
- Local time
- UTC
- 1981-05-15 16:11:09 UTC
- Depth
- 14.1 km (8.7 mi), shallow
- Epicenter
- 38.511° N, 111.939° 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 1.5 km horizontally, 2.5 km in depth
- Depth from
- From location
- Station coverage gap
- 137°
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.19 km ESE of Beaver, Utah · 16557 days ago · 11 km deep · 59 km away
- 2.527 km SW of Emery, Utah · 16551 days ago · 11 km deep · 47 km away
- 1.56 km E of Marysvale, Utah · 16550 days ago · 3 km deep · 21 km away
- 1.95 km ESE of Aurora, Utah · 16544 days ago · 8 km deep · 43 km away
- 2.02 km WSW of Elsinore, Utah · 16543 days ago · 5 km deep · 27 km away
- 2.116 km E of Holden, Utah · 16529 days ago · 2 km deep · 66 km away
- 1.529 km SW of Emery, Utah · 16528 days ago · 13 km deep · 46 km away
- 1.629 km SW of Emery, Utah · 16528 days ago · 11 km deep · 46 km away
- 1.77 km WNW of Circleville, Utah · 16527 days ago · 4 km deep · 49 km away
- 1.532 km NE of Milford, Utah · 16523 days ago · 5 km deep · 70 km away
Before
Earthquakes todayUtah earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uu50001555. Read Fri, Oct 2, 2026, 6:22 PM UTC.