Utah earthquakes

M2.5 earthquake 9 km N of Sunnyside, Utah

A magnitude 2.5 earthquake struck 9 km N of Sunnyside, Utah on Thu, Oct 10, 1985, 11:18 PM MDT (05:18 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.7 7 km N of Sunnyside, Utah. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.5 (md), micro
Local time
UTC
1985-10-11 05:18:56 UTC
Depth
1.9 km (1.2 mi), shallow
Epicenter
39.635° N, 110.390° 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 2.5 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
206°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.0Utah · 14952 days ago · 7 km deep · 20 km away
  2. 2.117 km ESE of Mapleton, Utah · 14950 days ago · 8 km deep · 98 km away
  3. 2.410 km NNW of East Carbon City, Utah · 14950 days ago · 4 km deep · 6 km away
  4. 2.58 km NNE of Sunnyside, Utah · 14941 days ago · 2 km deep · 3 km away
  5. 2.414 km S of Independence, Utah · 14924 days ago · 7 km deep · 94 km away
  6. 2.77 km N of Sunnyside, Utah · 14912 days ago · 6 km deep · 2 km away
  7. 2.521 km E of Kenilworth, Utah · 14909 days ago · 8 km deep · 17 km away
  8. 2.51 km SSW of Scofield, Utah · 14903 days ago · 7 km deep · 67 km away

Before

  1. 1.915 km WNW of Orangeville, Utah · 14959 days ago · 6 km deep · 83 km away
  2. 1.86 km NE of Sunnyside, Utah · 14959 days ago · 5 km deep · 6 km away
  3. 2.67 km N of East Carbon City, Utah · 14960 days ago · -1 km deep · 3 km away
  4. 2.117 km WNW of Orangeville, Utah · 14965 days ago · 8 km deep · 84 km away
  5. 2.89 km NNE of Sunnyside, Utah · 14968 days ago · 3 km deep · 3 km away
  6. 2.313 km NW of Orangeville, Utah · 14971 days ago · 2 km deep · 78 km away
  7. 2.68 km N of Sunnyside, Utah · 14973 days ago · 5 km deep · 1 km away
  8. 1.912 km WNW of Orangeville, Utah · 14974 days ago · 11 km deep · 80 km away
  9. 2.67 km N of East Carbon City, Utah · 14974 days ago · 0 km deep · 4 km away
  10. 2.35 km N of East Carbon City, Utah · 14977 days ago · 4 km deep · 5 km away
  11. 2.66 km N of East Carbon City, Utah · 14984 days ago · 2 km deep · 4 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50024770. Read Tue, Sep 22, 2026, 9:16 AM UTC.