Utah earthquakes

M1.5 earthquake 6 km W of Sigurd, Utah

A magnitude 1.5 earthquake struck 6 km W of Sigurd, Utah on Wed, Sep 11, 1985, 3:52 PM MDT (21:52 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M2.3 13 km NW of Orangeville, Utah. This one was a foreshock.

Richfield 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
1.5 (md), micro
Local time
UTC
1985-09-11 21:52:43 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
38.830° N, 112.042° 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 1.9 km horizontally, 5.6 km in depth
Depth from
From location
Station coverage gap
146°
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: 6 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.91 km ESE of Gunnison, Utah · 14990 days ago · 6 km deep · 41 km away
  2. 1.912 km WNW of Orangeville, Utah · 14980 days ago · 11 km deep · 88 km away
  3. 2.313 km NW of Orangeville, Utah · 14977 days ago · 2 km deep · 91 km away
  4. 2.02 km ENE of Gunnison, Utah · 14973 days ago · 9 km deep · 43 km away
  5. 2.117 km WNW of Orangeville, Utah · 14971 days ago · 8 km deep · 85 km away
  6. 1.915 km WNW of Orangeville, Utah · 14965 days ago · 6 km deep · 85 km away

Before

  1. 1.517 km ESE of Mount Pleasant, Utah · 15008 days ago · 3 km deep · 99 km away
  2. 1.68 km NW of Marysvale, Utah · 15010 days ago · -3 km deep · 42 km away
  3. 2.09 km NW of Marysvale, Utah · 15010 days ago · 6 km deep · 41 km away
  4. 1.65 km ENE of Leamington, Utah · 15012 days ago · 2 km deep · 81 km away
  5. 1.619 km WSW of Nephi, Utah · 15013 days ago · 9 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50023915. Read Mon, Sep 28, 2026, 7:06 AM UTC.