Utah earthquakes

M2.5 earthquake 9 km NNE of Sunnyside, Utah

A magnitude 2.5 earthquake struck 9 km NNE of Sunnyside, Utah on Tue, May 21, 1985, 12:57 AM MDT (06:57 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M2.7 7 km NNE 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
1985-05-21 06:57:50 UTC
Depth
3.2 km (2.0 mi), shallow
Epicenter
39.621° N, 110.335° 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, 1.1 km in depth
Depth from
From location
Station coverage gap
247°, poorly surrounded by stations
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.112 km NE of Sunnyside, Utah · 15099 days ago · 9 km deep · 5 km away
  2. 2.77 km NNE of Sunnyside, Utah · 15089 days ago · -2 km deep · 3 km away
  3. 2.59 km ENE of Kenilworth, Utah · 15088 days ago · 4 km deep · 33 km away
  4. 2.711 km ENE of Kenilworth, Utah · 15086 days ago · 4 km deep · 31 km away
  5. 2.66 km ENE of Sunnyside, Utah · 15082 days ago · 3 km deep · 5 km away
  6. 2.39 km N of Sunnyside, Utah · 15077 days ago · 4 km deep · 5 km away
  7. 2.19 km NNE of Sunnyside, Utah · 15074 days ago · 4 km deep · 3 km away
  8. 1.917 km ENE of Kenilworth, Utah · 15065 days ago · 6 km deep · 28 km away
  9. 2.95 km NE of Sunnyside, Utah · 15062 days ago · 3 km deep · 4 km away
  10. 3.17 km N of Sunnyside, Utah · 15062 days ago · 4 km deep · 4 km away
  11. 2.67 km NNE of Sunnyside, Utah · 15060 days ago · 4 km deep · 2 km away
  12. 1.911 km SE of Spring City, Utah · 15054 days ago · 24 km deep · 96 km away
  13. 2.89 km N of Sunnyside, Utah · 15042 days ago · 3 km deep · 6 km away

Before

  1. 2.38 km NNE of Sunnyside, Utah · 15105 days ago · 5 km deep · 2 km away
  2. 2.29 km WNW of Orangeville, Utah · 15111 days ago · 22 km deep · 82 km away
  3. 2.48 km NNE of Sunnyside, Utah · 15112 days ago · 4 km deep · 2 km away
  4. 2.47 km NNE of Sunnyside, Utah · 15113 days ago · 7 km deep · 3 km away
  5. 2.27 km N of Sunnyside, Utah · 15113 days ago · 3 km deep · 5 km away
  6. 2.47 km NNE of Sunnyside, Utah · 15115 days ago · 3 km deep · 2 km away
  7. 1.612 km NW of Orangeville, Utah · 15122 days ago · 9 km deep · 79 km away
  8. 2.38 km NNE of Sunnyside, Utah · 15123 days ago · 0 km deep · 2 km away
  9. 1.93 km ENE of Sunnyside, Utah · 15126 days ago · 26 km deep · 6 km away
  10. 2.38 km NNE of Sunnyside, Utah · 15129 days ago · 3 km deep · 2 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50021720. Read Tue, Sep 22, 2026, 9:43 AM UTC.