QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Mount Pleasant, UT

No earthquake was likely felt in Mount Pleasant in the 24 hours to 4:28 am MST (11:28 UTC). The last one was M 2.3, 5 km (3 mi) ENE, at 5:07 pm MDT on 12 August 2026, estimated intensity III (weak) in town. Every earthquake near Mount Pleasant

This page: a magnitude 1.8 earthquake was recorded 3 km (2 mi) north-northeast of Mount Pleasant, UT, at 8:26 pm MST on 15 January 2023 (03:26 UTC), 2.6 km deep.

USGS: Utah

8:26 pm MST, Jan 15, 2023 · · 2.6 km deep · released about 13 lb of TNT

Every earthquake near Mount Pleasant Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 25 kmUtah County 64 kmCarbon County 74 kmWasatch County 88 kmEmery County 89 kmSevier County 97 kmJuab County 116 kmDuchesne County 118 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
8:26 pm MST on 15 January 2023 ()
Where
3 km (2 mi) north-northeast of Mount Pleasant, UT · earthquakes near Mount Pleasant
Magnitude
M 1.8 (ml)
Depth
2.6 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 25 km SSW
Nearest mapped fault
Gunnison fault, 18 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 1395 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 13 km (8 mi) from the epicentre. In Mount Pleasant, 3 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: Fairview, Spring City, Moroni, Fountain Green, Ephraim.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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. 5.0 3 km WSW of Nephi, Utah · 39 km WNW 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 39.5753, -111.4465. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sanpete County, UT 25 km (16 mi) SSW earthquakes near Sanpete County
Utah County, UT 64 km (39 mi) NNW earthquakes near Utah County
Carbon County, UT 74 km (46 mi) E earthquakes near Carbon County
Wasatch County, UT 88 km (55 mi) NNE earthquakes near Wasatch County
Emery County, UT 89 km (55 mi) SE earthquakes near Emery County
Sevier County, UT 97 km (60 mi) SSW earthquakes near Sevier County

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

Aftershocks so far

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

  1. 1.7 8 km SSW of Hiawatha, Utah
  2. 1.6 17 km NW of Ferron, Utah
  3. 1.7 4 km SSE of Fairview, Utah
  4. 1.7 8 km W of Clear Creek, Utah
  5. 2.1 10 km WSW of Clear Creek, Utah
  6. 1.6 17 km SSW of Levan, Utah
  7. 1.7 13 km NW of Orangeville, Utah
  8. 1.8 10 km NW of Helper, Utah
  9. 1.9 6 km S of Clear Creek, Utah
  10. 1.6 11 km NW of Helper, Utah
  11. 2.0 9 km E of Fairview, Utah
  12. 1.9 9 km E of Fairview, Utah
  13. 1.5 4 km WNW of Helper, Utah
  14. 1.6 5 km WNW of Scofield, Utah
  15. 2.1 4 km WSW of Mount Pleasant, 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.