Utah earthquakes

M1.8 earthquake 9 km W of Nephi, Utah

A magnitude 1.8 earthquake struck 9 km W of Nephi, Utah on Mon, Oct 12, 1981, 4:23 PM MDT (22:23 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M2.1 17 km ESE of Mayfield, Utah. This one was a foreshock.

Nephi 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
1.8 (md), micro
Local time
UTC
1981-10-12 22:23:18 UTC
Depth
9.5 km (5.9 mi), shallow
Epicenter
39.715° N, 111.943° 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 1.6 km horizontally, 1.4 km in depth
Depth from
From location
Station coverage gap
134°
Stations used
8

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 12 in the 30 days before it.

After

  1. 1.88 km W of Nephi, Utah · 16416 days ago · 4 km deep · 1 km away
  2. 1.811 km W of Huntington, Utah · 16416 days ago · 12 km deep · 84 km away
  3. 2.117 km ESE of Mayfield, Utah · 16413 days ago · 9 km deep · 83 km away
  4. 1.63 km WSW of Ophir, Utah · 16405 days ago · 6 km deep · 77 km away
  5. 2.3Utah · 16400 days ago · -3 km deep · 30 km away
  6. 1.58 km N of Fayette, Utah · 16398 days ago · 12 km deep · 46 km away
  7. 2.08 km NNW of Fayette, Utah · 16398 days ago · 8 km deep · 47 km away
  8. 1.78 km N of Fayette, Utah · 16398 days ago · 14 km deep · 46 km away
  9. 2.33 km W of Hiawatha, Utah · 16395 days ago · 9 km deep · 80 km away
  10. 2.45 km N of Helper, Utah · 16392 days ago · 2 km deep · 94 km away
  11. 1.915 km ENE of Leamington, Utah · 16389 days ago · 3 km deep · 20 km away
  12. 1.64 km WSW of Hiawatha, Utah · 16388 days ago · 6 km deep · 81 km away
  13. 1.711 km W of Huntington, Utah · 16388 days ago · 3 km deep · 84 km away
  14. 1.73 km W of Hiawatha, Utah · 16384 days ago · 11 km deep · 81 km away
  15. 2.011 km W of Huntington, Utah · 16381 days ago · 5 km deep · 84 km away
  16. 1.614 km W of Huntington, Utah · 16380 days ago · 6 km deep · 81 km away
  17. 1.711 km NNW of Orangeville, Utah · 16376 days ago · 6 km deep · 84 km away
  18. 2.05 km WNW of Hiawatha, Utah · 16356 days ago · 6 km deep · 78 km away

Before

  1. 1.53 km SSW of Scofield, Utah · 16421 days ago · 6 km deep · 66 km away
  2. 1.64 km W of Genola, Utah · 16426 days ago · 0 km deep · 32 km away
  3. 1.77 km W of Huntington, Utah · 16429 days ago · 6 km deep · 88 km away
  4. 2.09 km NNW of Orangeville, Utah · 16429 days ago · 11 km deep · 86 km away
  5. 1.911 km NNW of Orangeville, Utah · 16431 days ago · 6 km deep · 84 km away
  6. 2.511 km W of Huntington, Utah · 16431 days ago · 7 km deep · 84 km away
  7. 1.89 km NNW of Orangeville, Utah · 16432 days ago · 7 km deep · 85 km away
  8. 2.514 km W of Huntington, Utah · 16433 days ago · 8 km deep · 81 km away
  9. 2.312 km W of Huntington, Utah · 16439 days ago · 8 km deep · 82 km away
  10. 1.810 km W of Huntington, Utah · 16439 days ago · 7 km deep · 84 km away
  11. 2.111 km W of Huntington, Utah · 16440 days ago · 6 km deep · 84 km away
  12. 2.119 km ESE of Mayfield, Utah · 16445 days ago · 5 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu50002805. Read Tue, Sep 22, 2026, 4:13 PM UTC.