Utah earthquakes

M1.5 earthquake 14 km NNW of Henefer, Utah

A magnitude 1.5 earthquake struck 14 km NNW of Henefer, Utah on Sat, Sep 15, 2018, 2:15 PM MDT (20:15 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M2.8 14 km NNW of Summit Park, Utah. This one was a foreshock.

Henefer 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
1.5 (ml), micro
Local time
UTC
2018-09-15 20:15:51 UTC
Depth
12.0 km (7.4 mi), shallow
Epicenter
41.143° N, 111.545° 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 0.3 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
116°
Stations used
12

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 7 in the 30 days before it.

After

  1. 2.13 km WNW of Fort Bridger, Wyoming · 2932 days ago · 38 km deep · 96 km away
  2. 2.014 km ESE of Huntsville, Utah · 2929 days ago · 9 km deep · 9 km away
  3. 1.616 km N of Summit Park, Utah · 2922 days ago · 7 km deep · 28 km away
  4. 2.620 km NE of Randolph, Utah · 2915 days ago · 9 km deep · 85 km away
  5. 1.63 km NNW of Saratoga Springs, Utah · 2906 days ago · 1 km deep · 91 km away
  6. 1.613 km NNW of Summit Park, Utah · 2899 days ago · 10 km deep · 33 km away
  7. 2.814 km NNW of Summit Park, Utah · 2899 days ago · 10 km deep · 32 km away · felt by 282
  8. 2.220 km NNW of Grantsville, Utah · 2898 days ago · 6 km deep · 98 km away
  9. 2.819 km NNW of Grantsville, Utah · 2898 days ago · 4 km deep · 98 km away · felt by 4
  10. 1.820 km NNW of Grantsville, Utah · 2898 days ago · 5 km deep · 97 km away
  11. 1.620 km NNW of Grantsville, Utah · 2897 days ago · 7 km deep · 98 km away
  12. 1.820 km NW of Grantsville, Utah · 2893 days ago · 5 km deep · 99 km away
  13. 1.55 km NNE of Morgan, Utah · 2890 days ago · 7 km deep · 12 km away

Before

  1. 1.611 km SW of Thatcher, Utah · 2941 days ago · 4 km deep · 89 km away
  2. 2.411 km SSW of Henefer, Utah · 2944 days ago · 9 km deep · 24 km away
  3. 2.511 km SSW of Henefer, Utah · 2944 days ago · 7 km deep · 24 km away · felt by 1
  4. 2.311 km SW of Thatcher, Utah · 2949 days ago · 8 km deep · 88 km away · felt by 1
  5. 1.911 km SW of Thatcher, Utah · 2949 days ago · 8 km deep · 89 km away
  6. 1.712 km SW of Thatcher, Utah · 2951 days ago · 6 km deep · 89 km away
  7. 2.110 km ESE of Randolph, Utah · 2958 days ago · -1 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60296677. Read Wed, Sep 30, 2026, 6:29 PM UTC.