QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Morgan, UT

No earthquake was likely felt in Morgan in the 24 hours to 3:06 am MST (10:06 UTC). The last one was M 3.5, 45 km (28 mi) SW, at 6:32 pm MST on 13 February 2026, estimated intensity II (weak) in town; 4,122 felt reports to USGS. Every earthquake near Morgan

This page: a magnitude 2.9 earthquake was recorded 13 km (8 mi) south-southeast of Morgan, UT, at 9:50 pm MST on 10 January 2023 (04:50 UTC), 6.7 km deep. 73 people have reported feeling it to USGS.

USGS: 13 km SSE of Morgan, Utah

31 km (19 mi) ENE of Salt Lake City, UT

9:50 pm MST, Jan 10, 2023 · · 6.7 km deep · released about 630 lb of TNT

10 km30 km60 km120 km N Morgan County 19 kmSalt Lake County 38 kmWeber County 44 kmDavis County 50 kmSummit County 55 kmWasatch County 76 kmRich County 84 kmUtah County 90 kmCache County 91 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
9:50 pm MST on 10 January 2023 ()
Where
13 km (8 mi) south-southeast of Morgan, UT · earthquakes near Morgan
Magnitude
M 2.9 (ml)
Depth
6.7 km below the surface
Felt
73 reports · strongest reported intensity IV
Nearest
Morgan County, 19 km NNE
Nearest mapped fault
Main Canyon fault, 9 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 1318 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 30 km (19 mi) from the epicentre. In Morgan, 13 km away, the estimate is intensity III (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.

Likely felt in: Summit Park 20 km, intensity II · Bountiful 22 km, intensity II · Salt Lake City 29 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 630 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 24,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 17,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 630 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 17,000 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 · 29 km SSW of this epicentre
  2. 5.0 1 km NE of Magna, Utah · 45 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 40.9252, -111.6248. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 19 km (12 mi) NNE earthquakes near Morgan County
Salt Lake County, UT 38 km (24 mi) SW earthquakes near Salt Lake County
Weber County, UT 44 km (27 mi) NNW earthquakes near Weber County
Davis County, UT 50 km (31 mi) WNW earthquakes near Davis County
Summit County, UT 55 km (34 mi) E earthquakes near Summit County
Wasatch County, UT 76 km (47 mi) SSE earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 1.6 18 km N of Henefer, Utah
  2. 2.0 4 km NNW of West Valley City, Utah
  3. 1.7 2 km ESE of Echo, Utah
  4. 3.5 4 km NNW of West Valley City, Utah
  5. 1.6 5 km NE of Magna, Utah
  6. 3.3 13 km E of Huntsville, Utah
  7. 1.8 13 km ESE of Centerville, Utah
  8. 1.7 4 km WNW of Silver Summit, Utah
  9. 1.9 7 km NE of Huntsville, Utah
  10. 1.5 7 km NE of Huntsville, Utah
  11. 1.6 14 km NE of Enterprise, Utah
  12. 1.5 9 km S of Morgan, Utah
  13. 1.6 9 km S of Morgan, Utah
  14. 1.7 3 km ENE of Magna, Utah
  15. 1.6 2 km SE of North Salt Lake, 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.