Utah earthquakes

M2.1 earthquake 21 km SW of Kanosh, Utah

A magnitude 2.1 earthquake struck 21 km SW of Kanosh, Utah on Sun, Dec 28, 1986, 1:45 PM MST (20:45 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.2 9 km ESE of Scipio, 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
1986-12-28 20:45:31 UTC
Depth
1.8 km (1.1 mi), shallow
Epicenter
38.638° N, 112.579° 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 1.0 km horizontally, 2.2 km in depth
Depth from
From location
Station coverage gap
144°
Stations used
10

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 3 in the 30 days before it.

After

  1. 1.58 km NW of Junction, Utah · 14510 days ago · 4 km deep · 46 km away
  2. 2.29 km ESE of Scipio, Utah · 14503 days ago · 0 km deep · 80 km away
  3. 1.610 km ESE of Scipio, Utah · 14503 days ago · 3 km deep · 82 km away
  4. 1.77 km S of Joseph, Utah · 14496 days ago · -1 km deep · 32 km away
  5. 1.67 km S of Joseph, Utah · 14494 days ago · 3 km deep · 33 km away
  6. 1.7Utah · 14494 days ago · 2 km deep · 32 km away
  7. 3.39 km SSE of Mayfield, Utah · 14494 days ago · 19 km deep · 92 km away
  8. 2.819 km S of Beaver, Utah · 14493 days ago · 4 km deep · 60 km away
  9. 2.421 km S of Beaver, Utah · 14493 days ago · 4 km deep · 62 km away
  10. 2.322 km S of Beaver, Utah · 14493 days ago · 5 km deep · 63 km away
  11. 2.77 km NW of Circleville, Utah · 14472 days ago · 13 km deep · 52 km away
  12. 2.124 km SSW of Kanosh, Utah · 14470 days ago · 17 km deep · 5 km away
  13. 2.515 km E of Oak City, Utah · 14456 days ago · 5 km deep · 91 km away

Before

  1. 2.618 km SW of Kanosh, Utah · 14514 days ago · 0 km deep · 4 km away
  2. 2.519 km SW of Kanosh, Utah · 14514 days ago · 1 km deep · 3 km away
  3. 2.021 km SW of Kanosh, Utah · 14524 days ago · 5 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50031085. Read Tue, Sep 22, 2026, 9:34 PM UTC.