Utah earthquakes

M3.3 earthquake 7 km NNE of Sunnyside, Utah

A magnitude 3.3 earthquake struck 7 km NNE of Sunnyside, Utah on Mon, Sep 21, 1981, 2:01 AM MDT (08:01 UTC), 5 km (3 mi) below the surface.

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
3.3 (md), minor
Local time
UTC
1981-09-21 08:01:32 UTC
Depth
4.9 km (3.1 mi), shallow
Epicenter
39.617° N, 110.361° 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 1.7 km horizontally, 1.2 km in depth
Depth from
From location
Station coverage gap
236°, 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 10 in the 30 days before it.

After

  1. 3.05 km N of East Carbon City, Utah · 16436 days ago · 7 km deep · 5 km away
  2. 3.27 km N of East Carbon City, Utah · 16436 days ago · 3 km deep · 5 km away
  3. 2.514 km W of Huntington, Utah · 16433 days ago · 8 km deep · 73 km away
  4. 1.89 km NNW of Orangeville, Utah · 16432 days ago · 7 km deep · 73 km away
  5. 2.511 km W of Huntington, Utah · 16431 days ago · 7 km deep · 70 km away
  6. 1.911 km NNW of Orangeville, Utah · 16431 days ago · 6 km deep · 72 km away
  7. 2.09 km NNW of Orangeville, Utah · 16428 days ago · 11 km deep · 72 km away
  8. 1.77 km W of Huntington, Utah · 16428 days ago · 6 km deep · 67 km away
  9. 1.53 km SSW of Scofield, Utah · 16420 days ago · 6 km deep · 70 km away
  10. 1.811 km W of Huntington, Utah · 16415 days ago · 12 km deep · 70 km away
  11. 2.33 km W of Hiawatha, Utah · 16395 days ago · 9 km deep · 61 km away
  12. 2.45 km N of Helper, Utah · 16391 days ago · 2 km deep · 44 km away
  13. 1.64 km WSW of Hiawatha, Utah · 16388 days ago · 6 km deep · 62 km away
  14. 1.711 km W of Huntington, Utah · 16387 days ago · 3 km deep · 71 km away
  15. 1.73 km W of Hiawatha, Utah · 16383 days ago · 11 km deep · 61 km away
  16. 1.612 km S of Sunnyside, Utah · 16383 days ago · 9 km deep · 20 km away
  17. 2.011 km W of Huntington, Utah · 16380 days ago · 5 km deep · 70 km away
  18. 1.614 km W of Huntington, Utah · 16380 days ago · 6 km deep · 73 km away

Before

  1. 2.312 km W of Huntington, Utah · 16439 days ago · 8 km deep · 71 km away
  2. 1.810 km W of Huntington, Utah · 16439 days ago · 7 km deep · 70 km away
  3. 2.111 km W of Huntington, Utah · 16440 days ago · 6 km deep · 70 km away
  4. 2.042 km WSW of Green River, Utah · 16449 days ago · 7 km deep · 83 km away
  5. 1.88 km NNW of Orangeville, Utah · 16453 days ago · 6 km deep · 72 km away
  6. 2.14 km SSW of Hiawatha, Utah · 16455 days ago · 5 km deep · 61 km away
  7. 1.944 km ESE of Emery, Utah · 16462 days ago · 10 km deep · 95 km away
  8. 1.94 km N of Clear Creek, Utah · 16464 days ago · 2 km deep · 68 km away
  9. 1.89 km NNW of Orangeville, Utah · 16464 days ago · 5 km deep · 73 km away
  10. 2.3Utah · 16466 days ago · 0 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50002640 (also filed as usp0001g0n). Read Tue, Sep 22, 2026, 7:54 AM UTC.