QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

Earthquake near Salt Lake City, UT

No earthquake was likely felt in Salt Lake City in the 24 hours to 2:43 am MST (09:43 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 2.7 earthquake was recorded 46 km (29 mi) north-northeast of Salt Lake City, UT, at 9:36 pm MST on 28 January 2023 (04:36 UTC), 12 km deep. 11 people have reported feeling it to USGS.

USGS: Utah

47 km (29 mi) NE of Salt Lake City, UT · 31 km (19 mi) E of Layton, UT

9:36 pm MST, Jan 28, 2023 · · 12 km deep · released about 310 lb of TNT

Every earthquake near Salt Lake City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 3 kmWeber County 29 kmDavis County 51 kmSalt Lake County 57 kmSummit County 59 kmRich County 65 kmCache County 70 kmUinta County 89 kmWasatch County 94 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
9:36 pm MST on 28 January 2023 ()
Where
46 km (29 mi) north-northeast of Salt Lake City, UT · earthquakes near Salt Lake City
Magnitude
M 2.7 (ml)
Depth
12 km below the surface
Felt
11 reports · strongest reported intensity V
Nearest
Morgan County, 3 km SSE
Nearest mapped fault
Morgan fault, 7 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 1309 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 22 km (14 mi) from the epicentre. In Salt Lake City, 46 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: Morgan, Mountain Green, Fruit Heights, Coalville, Uintah, South Weber.

How big was it?

This earthquake released about 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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 2 earthquakes of M5 or more within 50 km:

  1. 5.5 26 km E of Avon, Utah · 44 km N of this epicentre
  2. 5.3 Near Salt Lake City, Utah · 49 km SSW 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 41.1123, -111.5962. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 3 km (2 mi) SSE earthquakes near Morgan County
Weber County, UT 29 km (18 mi) NW earthquakes near Weber County
Davis County, UT 51 km (32 mi) W earthquakes near Davis County
Salt Lake County, UT 57 km (35 mi) SSW earthquakes near Salt Lake County
Summit County, UT 59 km (37 mi) ESE earthquakes near Summit County
Rich County, UT 65 km (40 mi) NNE earthquakes near Rich County

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

Aftershocks so far

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

  1. 1.6 18 km N of Henefer, Utah
  2. 1.7 2 km ESE of Echo, Utah
  3. 3.3 13 km E of Huntsville, Utah
  4. 1.8 13 km ESE of Centerville, Utah
  5. 1.7 4 km WNW of Silver Summit, Utah
  6. 1.5 8 km E of Avon, Utah
  7. 1.9 7 km NE of Huntsville, Utah
  8. 1.5 7 km NE of Huntsville, Utah
  9. 1.6 14 km NE of Enterprise, Utah
  10. 1.5 9 km S of Morgan, Utah
  11. 1.6 9 km S of Morgan, Utah
  12. 1.6 2 km SE of North Salt Lake, Utah
  13. 1.8 12 km ENE of Wolf Creek, Utah
  14. 2.6 15 km NNW of Summit Park, Utah
  15. 2.9 6 km E of Avon, 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.