QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Salt Lake City, UT

No earthquake was likely felt in Salt Lake City in the 24 hours to 3:45 am MST (10:45 UTC). The last one was M 2.2, 13 km (8 mi) WSW, at 8:46 am MDT on 17 June 2026, estimated intensity II (weak) in town; 28 felt reports to USGS. Every earthquake near Salt Lake City

This page: a magnitude 2.0 earthquake was recorded 32 km (20 mi) east-northeast of Salt Lake City, UT, at 4:47 pm MST on 22 December 2023 (23:47 UTC), 9.3 km deep. 1 person has reported feeling it to USGS.

USGS: 12 km WSW of Echo, Utah

34 km (21 mi) ENE of Salt Lake City, UT · 34 km (21 mi) NE of Millcreek, UT

4:47 pm MST, Dec 22, 2023 · · 9.3 km deep · released about 26 lb of TNT

Every earthquake near Salt Lake City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 19 kmSalt Lake County 41 kmWeber County 47 kmSummit County 51 kmDavis County 55 kmWasatch County 73 kmRich County 84 kmUtah County 89 kmCache County 92 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
4:47 pm MST on 22 December 2023 ()
Where
32 km (20 mi) east-northeast of Salt Lake City, UT · earthquakes near Salt Lake City
Magnitude
M 2.0 (ml)
Depth
9.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Morgan County, 19 km N
Nearest mapped fault
Main Canyon fault, 4 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 989 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 12 km (7 mi) from the epicentre. In Salt Lake City, 32 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: Coalville, Morgan, Summit Park, Silver Summit, Snyderville, Centerville.

How big was it?

This earthquake released about 26 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 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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

The largest earthquake within 50 km since 2016 was M 5.7 on 2020-03-18 — about 410,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.3 Near Salt Lake City, Utah · 31 km SW of this epicentre
  2. 5.0 1 km NE of Magna, Utah · 49 km WSW 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 40.9178, -111.5677. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 19 km (12 mi) N earthquakes near Morgan County
Salt Lake County, UT 41 km (25 mi) SW earthquakes near Salt Lake County
Weber County, UT 47 km (29 mi) NNW earthquakes near Weber County
Summit County, UT 51 km (31 mi) E earthquakes near Summit County
Davis County, UT 55 km (34 mi) WNW earthquakes near Davis County
Wasatch County, UT 73 km (46 mi) SSE earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 1.1 12 km ESE of Bountiful, Utah
  2. 0.2 7 km NE of Magna, Utah
  3. 0.5 7 km NE of Magna, Utah
  4. 1.1 4 km ENE of Morgan, Utah
  5. 0.8 14 km NNW of Henefer, Utah
  6. 1.3 2 km SSW of Silver Summit, Utah
  7. 1.9 12 km N of Summit Park, Utah
  8. 0.8 14 km N of Summit Park, Utah
  9. 0.7 0 km ENE of Summit Park, Utah
  10. 1.3 1 km ESE of Summit Park, Utah
  11. 1.1 1 km ESE of Summit Park, Utah
  12. 2.4 1 km ENE of Summit Park, Utah
  13. 1.2 14 km N of Summit Park, Utah
  14. 1.1 6 km NE of Magna, Utah
  15. 1.0 4 km ENE of Huntsville, 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.