Utah earthquakes

M2.1 earthquake Utah

A magnitude 2.1 earthquake struck in Utah on Sat, Dec 10, 1983, 1:35 PM MST (20:35 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M2.5 22 km NW of Orangeville, 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
2.1 (md), micro
Local time
UTC
1983-12-10 20:35:18 UTC
Depth
8.6 km (5.3 mi), shallow
Epicenter
39.431° N, 111.941° 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 1.4 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
127°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 2.010 km NNW of Orangeville, Utah · 15622 days ago · 3 km deep · 74 km away
  2. 1.813 km NW of Orangeville, Utah · 15622 days ago · 3 km deep · 70 km away
  3. 2.522 km NW of Orangeville, Utah · 15610 days ago · 7 km deep · 61 km away
  4. 2.422 km NW of Orangeville, Utah · 15608 days ago · 6 km deep · 60 km away
  5. 1.89 km S of Scipio, Utah · 15607 days ago · 20 km deep · 34 km away
  6. 1.99 km W of Fairfield, Utah · 15607 days ago · 4 km deep · 93 km away
  7. 3.118 km ESE of Mayfield, Utah · 15599 days ago · 4 km deep · 56 km away
  8. 1.820 km ESE of Mayfield, Utah · 15599 days ago · 3 km deep · 59 km away
  9. 2.37 km WNW of Fayette, Utah · 15597 days ago · 5 km deep · 21 km away
  10. 2.49 km NW of Helper, Utah · 15597 days ago · 6 km deep · 94 km away
  11. 1.721 km ESE of Mayfield, Utah · 15597 days ago · 5 km deep · 59 km away
  12. 1.610 km NNW of Orangeville, Utah · 15595 days ago · 6 km deep · 72 km away

Before

  1. 2.310 km NW of Fayette, Utah · 15628 days ago · 6 km deep · 17 km away
  2. 1.67 km W of Sigurd, Utah · 15631 days ago · 1 km deep · 65 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50011675. Read Tue, Sep 22, 2026, 6:53 PM UTC.