QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

20 km ESE of Mapleton, Utah

· 7.8 km deep · released about 23 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Utah County 26 kmWasatch County 38 kmSanpete County 75 kmCarbon County 79 kmSalt Lake County 84 kmDuchesne County 86 kmSummit County 99 kmMorgan County 119 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
Magnitude
M 1.9 (ml)
Depth
7.8 km below the surface
Felt
no reports yet
Nearest
Utah County, 26 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2204 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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.

Where

Epicentre 40.0338, -111.3793. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Utah County, UT 26 km (16 mi) ESE of here earthquakes near Utah County
Wasatch County, UT 38 km (24 mi) SSW of here earthquakes near Wasatch County
Sanpete County, UT 75 km (47 mi) NNE of here earthquakes near Sanpete County
Carbon County, UT 79 km (49 mi) WNW of here earthquakes near Carbon County
Salt Lake County, UT 84 km (52 mi) SSE of here earthquakes near Salt Lake County
Duchesne County, UT 86 km (53 mi) WSW of here earthquakes near Duchesne County

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

Aftershocks so far

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

  1. 1.6 3 km NNE of Clear Creek, Utah
  2. 1.7 5 km W of Wallsburg, Utah
  3. 1.5 8 km NNE of Fountain Green, Utah
  4. 2.6 6 km SW of Rocky Ridge, Utah
  5. 2.7 15 km E of Independence, Utah
  6. 2.7 Utah
  7. 1.5 28 km ESE of Mapleton, Utah
  8. 2.4 28 km ESE of Mapleton, Utah
  9. 1.7 28 km ESE of Mapleton, Utah
  10. 1.9 8 km NE of Lindon, Utah
  11. 1.6 11 km W of Clear Creek, Utah
  12. 1.6 20 km E of Mapleton, Utah
  13. 1.9 19 km E of Mapleton, Utah
  14. 2.2 24 km ESE of Woodland Hills, Utah
  15. 2.1 9 km ENE of Fairview, 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.