Utah earthquakes

M2.4 earthquake 8 km NNE of Sunnyside, Utah

A magnitude 2.4 earthquake struck 8 km NNE of Sunnyside, Utah on Sat, Aug 31, 1985, 8:24 AM MDT (14:24 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 15 km ENE of Kenilworth, Utah. This one was a foreshock.

East Carbon City 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
2.4 (md), micro
Local time
UTC
1985-08-31 14:24:24 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
39.622° N, 110.346° 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 2.4 km horizontally, 1.6 km in depth
Depth from
From location
Station coverage gap
240°, poorly surrounded by stations
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.715 km ENE of Kenilworth, Utah · 14995 days ago · -2 km deep · 27 km away
  2. 2.77 km NNE of Sunnyside, Utah · 14992 days ago · 1 km deep · 2 km away
  3. 2.97 km N of Sunnyside, Utah · 14992 days ago · 3 km deep · 3 km away
  4. 2.66 km N of East Carbon City, Utah · 14985 days ago · 2 km deep · 6 km away
  5. 2.35 km N of East Carbon City, Utah · 14978 days ago · 4 km deep · 7 km away
  6. 2.67 km N of East Carbon City, Utah · 14975 days ago · 0 km deep · 7 km away
  7. 1.912 km WNW of Orangeville, Utah · 14974 days ago · 11 km deep · 83 km away
  8. 2.68 km N of Sunnyside, Utah · 14973 days ago · 5 km deep · 4 km away
  9. 2.313 km NW of Orangeville, Utah · 14972 days ago · 2 km deep · 80 km away
  10. 2.89 km NNE of Sunnyside, Utah · 14969 days ago · 3 km deep · 1 km away
  11. 2.117 km WNW of Orangeville, Utah · 14965 days ago · 8 km deep · 86 km away
  12. 2.67 km N of East Carbon City, Utah · 14961 days ago · -1 km deep · 7 km away
  13. 1.86 km NE of Sunnyside, Utah · 14960 days ago · 5 km deep · 3 km away
  14. 1.915 km WNW of Orangeville, Utah · 14959 days ago · 6 km deep · 86 km away
  15. 2.59 km N of Sunnyside, Utah · 14957 days ago · 2 km deep · 4 km away
  16. 2.0Utah · 14952 days ago · 7 km deep · 24 km away
  17. 2.410 km NNW of East Carbon City, Utah · 14950 days ago · 4 km deep · 10 km away
  18. 2.58 km NNE of Sunnyside, Utah · 14941 days ago · 2 km deep · 1 km away

Before

  1. 1.517 km ESE of Mount Pleasant, Utah · 15003 days ago · 3 km deep · 81 km away
  2. 2.67 km NNE of Sunnyside, Utah · 15022 days ago · 5 km deep · 2 km away
  3. 2.75 km NE of Sunnyside, Utah · 15023 days ago · 0 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50023500. Read Tue, Sep 22, 2026, 8:57 PM UTC.