Utah earthquakes

M1.6 earthquake 19 km WSW of Nephi, Utah

A magnitude 1.6 earthquake struck 19 km WSW of Nephi, Utah on Tue, Aug 20, 1985, 1:48 PM MDT (19:48 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M1.9 1 km ESE of Gunnison, Utah. This one was a foreshock.

Nephi forecastMore in Utah

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1985-08-20 19:48:18 UTC
Depth
8.6 km (5.4 mi), shallow
Epicenter
39.665° N, 112.054° 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 1.6 km horizontally, 3.1 km in depth
Depth from
From location
Station coverage gap
88°
Stations used
14

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 1.65 km ENE of Leamington, Utah · 15006 days ago · 2 km deep · 20 km away
  2. 1.517 km ESE of Mount Pleasant, Utah · 15003 days ago · 3 km deep · 70 km away
  3. 1.56 km W of Sigurd, Utah · 14986 days ago · 9 km deep · 93 km away
  4. 1.91 km ESE of Gunnison, Utah · 14984 days ago · 6 km deep · 61 km away
  5. 1.912 km WNW of Orangeville, Utah · 14974 days ago · 11 km deep · 86 km away
  6. 2.313 km NW of Orangeville, Utah · 14972 days ago · 2 km deep · 85 km away
  7. 1.62 km ENE of Genola, Utah · 14971 days ago · 2 km deep · 43 km away
  8. 2.02 km ENE of Gunnison, Utah · 14967 days ago · 9 km deep · 61 km away
  9. 2.117 km WNW of Orangeville, Utah · 14965 days ago · 8 km deep · 82 km away
  10. 1.915 km WNW of Orangeville, Utah · 14959 days ago · 6 km deep · 83 km away
  11. 1.82 km S of West Mountain, Utah · 14952 days ago · 3 km deep · 47 km away
  12. 2.117 km ESE of Mapleton, Utah · 14951 days ago · 8 km deep · 75 km away

Before

  1. 1.63 km S of American Fork, Utah · 15012 days ago · 1 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50023250. Read Tue, Sep 22, 2026, 10:35 PM UTC.