QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Silver Summit, UT

No earthquake was likely felt in Silver Summit in the 24 hours to 9:48 pm MST (04:48 UTC). The last one was M 2.4, 9 km (5 mi) W, at 1:30 pm MDT on 17 October 2026, estimated intensity II (weak) in town; 6 felt reports to USGS. Every earthquake near Silver Summit

This page: a magnitude 2.0 earthquake was recorded 6 km (4 mi) east of Silver Summit, UT, at 8:47 am MST on 6 December 2023 (15:47 UTC), 11 km deep.

USGS: 6 km E of Silver Summit, Utah

44 km (27 mi) E of Salt Lake City, UT · 35 km (22 mi) E of Millcreek, UT

8:47 am MST, Dec 6, 2023 · · 11 km deep · released about 27 lb of TNT

10 km30 km60 km120 km N Summit County 41 kmMorgan County 42 kmSalt Lake County 43 kmWasatch County 49 kmWeber County 71 kmUtah County 72 kmDavis County 74 kmUinta County 94 kmDuchesne County 97 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
8:47 am MST on 6 December 2023 ()
Where
6 km (4 mi) east of Silver Summit, UT · earthquakes near Silver Summit
Magnitude
M 2.0 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Summit County, 41 km ENE
Nearest mapped fault
Main Canyon fault, 17 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1029 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. In Silver Summit, 6 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Oakley, Snyderville, Park City, Kamas, Summit Park, Francis.

How big was it?

This earthquake released about 27 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.3 Near Salt Lake City, Utah · 32 km W of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 40.7350, -111.4172. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Summit County, UT 41 km (25 mi) ENE earthquakes near Summit County
Morgan County, UT 42 km (26 mi) NNW earthquakes near Morgan County
Salt Lake County, UT 43 km (27 mi) W earthquakes near Salt Lake County
Wasatch County, UT 49 km (31 mi) SSE earthquakes near Wasatch County
Weber County, UT 71 km (44 mi) NNW earthquakes near Weber County
Utah County, UT 72 km (44 mi) SSW earthquakes near Utah County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

31 earthquakes have been recorded within 50 km since this one.

  1. 1.6 2 km ENE of Summit Park, Utah
  2. 1.8 5 km E of Heber City, Utah
  3. 2.1 5 km NW of Summit Park, Utah
  4. 1.7 2 km ESE of Echo, Utah
  5. 2.7 41 km ENE of Oakley, Utah
  6. 4.7 40 km S of Evanston, Wyoming
  7. 1.8 6 km ESE of Daniel, Utah
  8. 1.8 13 km ESE of Centerville, Utah
  9. 1.7 4 km WNW of Silver Summit, Utah
  10. 2.8 6 km WNW of Independence, Utah
  11. 1.9 9 km W of Independence, Utah
  12. 1.6 7 km SSE of Wallsburg, Utah
  13. 2.3 4 km WNW of Independence, Utah
  14. 1.5 9 km S of Morgan, Utah
  15. 1.6 9 km S of Morgan, Utah

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.