QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Morgan, UT

USGS: 8 km SSW of Morgan, Utah

28 km (17 mi) NE of Salt Lake City, UT · 25 km (15 mi) ESE of Layton, UT

10:34 am MDT, May 14, 2016 · · 10 km deep · released about 74 lb of TNT

10 km30 km60 km120 km N Morgan County 18 kmWeber County 37 kmSalt Lake County 37 kmDavis County 42 kmSummit County 63 kmWasatch County 84 kmRich County 84 kmCache County 86 kmUtah 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
10:34 am MDT on 14 May 2016 ()
Where
9 km (5 mi) SSW of Morgan, UT · earthquakes near Morgan
Magnitude
M 2.3 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Morgan County, 18 km NE
Nearest mapped fault
Morgan fault, 10 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 3790 days ago

A magnitude 2.3 earthquake was recorded 9 km (5 mi) SSW of Morgan, UT, at 10:34 am MDT on 14 May 2016 (16:34 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Centerville, Farmington, Bountiful, West Bountiful, Fruit Heights, Woods Cross.

How big was it?

This earthquake released about 74 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 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. 5.3 Near Salt Lake City, Utah · 30 km SSW of this epicentre
  2. 5.0 1 km NE of Magna, Utah · 42 km SW 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 40.9620, -111.7090. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 18 km (11 mi) NE earthquakes near Morgan County
Weber County, UT 37 km (23 mi) NNW earthquakes near Weber County
Salt Lake County, UT 37 km (23 mi) SSW earthquakes near Salt Lake County
Davis County, UT 42 km (26 mi) WNW earthquakes near Davis County
Summit County, UT 63 km (39 mi) E earthquakes near Summit County
Wasatch County, UT 84 km (52 mi) SSE earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 3.2 5 km NNE of Magna, Utah
  2. 3.7 5 km NNE of Magna, Utah
  3. 4.2 1 km NNW of Magna, Utah
  4. 4.0 4 km NNE of Magna, Utah
  5. 3.9 4 km NNE of Magna, Utah
  6. 5.7 5 km NNE of Magna, Utah
  7. 2.4 21 km ENE of Echo, Utah
  8. 2.1 8 km SSW of Henefer, Utah
  9. 2.0 9 km SSW of Henefer, Utah
  10. 1.9 13 km SW of Echo, Utah
  11. 1.8 2 km WNW of Snyderville, Utah
  12. 2.2 3 km E of Enterprise, Utah
  13. 1.8 5 km ESE of Morgan, Utah
  14. 1.6 5 km ESE of Morgan, Utah
  15. 1.6 5 km ESE 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.