Utah earthquakes

M1.6 earthquake 16 km N of Summit Park, Utah

A magnitude 1.6 earthquake struck 16 km N of Summit Park, Utah on Sun, Sep 30, 2018, 4:38 PM MDT (22:38 UTC), 7 km (4 mi) below the surface.

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

Summit Park 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
1.6 (md), micro
Local time
UTC
2018-09-30 22:38:02 UTC
Depth
6.8 km (4.2 mi), shallow
Epicenter
40.893° N, 111.606° 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 0.5 km horizontally, 2.5 km in depth
Magnitude uncertainty
±0.41
Depth from
From location
Station coverage gap
109°
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: 11 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.63 km NNW of Saratoga Springs, Utah · 2906 days ago · 1 km deep · 64 km away
  2. 1.613 km NNW of Summit Park, Utah · 2899 days ago · 10 km deep · 6 km away
  3. 2.814 km NNW of Summit Park, Utah · 2899 days ago · 10 km deep · 6 km away · felt by 282
  4. 2.220 km NNW of Grantsville, Utah · 2898 days ago · 6 km deep · 85 km away
  5. 2.819 km NNW of Grantsville, Utah · 2898 days ago · 4 km deep · 84 km away · felt by 4
  6. 1.820 km NNW of Grantsville, Utah · 2898 days ago · 5 km deep · 84 km away
  7. 1.620 km NNW of Grantsville, Utah · 2897 days ago · 7 km deep · 84 km away
  8. 1.820 km NW of Grantsville, Utah · 2893 days ago · 5 km deep · 85 km away
  9. 1.718 km SSE of Independence, Utah · 2892 days ago · 6 km deep · 90 km away
  10. 1.55 km NNE of Morgan, Utah · 2890 days ago · 7 km deep · 22 km away
  11. 1.89 km SSW of Laketown, Utah · 2873 days ago · 2 km deep · 97 km away

Before

  1. 2.014 km ESE of Huntsville, Utah · 2929 days ago · 9 km deep · 35 km away
  2. 1.514 km NNW of Henefer, Utah · 2937 days ago · 12 km deep · 28 km away
  3. 2.411 km SSW of Henefer, Utah · 2944 days ago · 9 km deep · 5 km away
  4. 2.511 km SSW of Henefer, Utah · 2944 days ago · 7 km deep · 5 km away · felt by 1

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uu60298552. Read Wed, Sep 30, 2026, 6:29 PM UTC.