QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

21 km ESE of Mayfield, Utah

· 3.9 km deep · released about 310 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 35 kmSevier County 47 kmEmery County 65 kmWayne County 99 kmPiute County 100 kmCarbon County 101 kmUtah 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
Magnitude
M 2.7 (ml)
Depth
3.9 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Sanpete County, 35 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2263 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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 39.0718, -111.4658. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 35 km (22 mi) SSE of here earthquakes near Sanpete County
Sevier County, UT 47 km (29 mi) NE of here earthquakes near Sevier County
Emery County, UT 65 km (40 mi) W of here earthquakes near Emery County
Wayne County, UT 99 km (62 mi) NNW of here earthquakes near Wayne County
Piute County, UT 100 km (62 mi) NE of here earthquakes near Piute County
Carbon County, UT 101 km (63 mi) SW of here earthquakes near Carbon County

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

Aftershocks so far

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

  1. 2.0 26 km SW of Emery, Utah
  2. 1.7 27 km SSW of Emery, Utah
  3. 2.2 27 km SW of Emery, Utah
  4. 2.2 Utah
  5. 2.0 12 km WNW of Emery, Utah
  6. 1.5 25 km ESE of Salina, Utah
  7. 1.7 5 km SSE of Sterling, Utah
  8. 1.9 20 km SE of Mayfield, Utah
  9. 1.7 28 km N of Fremont, Utah
  10. 1.6 9 km NW of Sterling, Utah
  11. 1.6 3 km SSW of Manti, Utah
  12. 1.6 2 km SSW of Manti, Utah
  13. 2.3 10 km SE of Manti, Utah
  14. 2.8 4 km NW of Aurora, Utah
  15. 1.5 15 km ESE of Ephraim, 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.