QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

21 km E of Mayfield, Utah

· 4.2 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 30 kmSevier County 51 kmEmery County 66 kmCarbon County 98 kmWayne County 104 kmPiute County 104 kmUtah County 113 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
4.2 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 30 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 852 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 20 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 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 39.1143, -111.4678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 30 km (19 mi) SSE of here earthquakes near Sanpete County
Sevier County, UT 51 km (31 mi) NE of here earthquakes near Sevier County
Emery County, UT 66 km (41 mi) W of here earthquakes near Emery County
Carbon County, UT 98 km (61 mi) SW of here earthquakes near Carbon County
Wayne County, UT 104 km (64 mi) NNW of here earthquakes near Wayne County
Piute County, UT 104 km (65 mi) NNE of here earthquakes near Piute 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. 1.8 8 km E of Ephraim, Utah
  2. 1.7 7 km E of Ephraim, Utah
  3. 2.3 18 km SE of Manti, Utah
  4. 2.1 18 km ESE of Sterling, Utah
  5. 1.6 10 km NNW of Aurora, Utah
  6. 1.6 15 km WNW of Emery, Utah
  7. 1.5 16 km NW of Emery, Utah
  8. 1.5 22 km WSW of Emery, Utah
  9. 2.2 18 km E of Mayfield, Utah
  10. 1.9 5 km ENE of Sterling, Utah
  11. 1.8 22 km ESE of Salina, Utah
  12. 1.7 16 km NW of Emery, Utah
  13. 1.5 14 km E of Ephraim, Utah
  14. 1.5 16 km NW of Emery, Utah
  15. 1.5 17 km N of Fayette, 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.