QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

17 km ESE of Mayfield, Utah

· 5.4 km deep · released about 2.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 38 kmSevier County 40 kmEmery County 71 kmPiute County 93 kmWayne County 99 kmCarbon County 108 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 3.4 (ml)
Depth
5.4 km below the surface
Felt
2 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Sanpete County, 38 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 718 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 78,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.6× more

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 39.0353, -111.5402. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 38 km (23 mi) S of here earthquakes near Sanpete County
Sevier County, UT 40 km (25 mi) NE of here earthquakes near Sevier County
Emery County, UT 71 km (44 mi) W of here earthquakes near Emery County
Piute County, UT 93 km (58 mi) NNE of here earthquakes near Piute County
Wayne County, UT 99 km (61 mi) NNW of here earthquakes near Wayne County
Carbon County, UT 108 km (67 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

49 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. 1.9 11 km NW of Aurora, Utah
  7. 1.6 15 km WNW of Emery, Utah
  8. 1.5 16 km NW of Emery, Utah
  9. 1.5 22 km WSW of Emery, Utah
  10. 2.2 18 km E of Mayfield, Utah
  11. 1.9 5 km ENE of Sterling, Utah
  12. 1.8 22 km ESE of Salina, Utah
  13. 1.7 16 km NW of Emery, Utah
  14. 1.5 14 km E of Ephraim, Utah
  15. 1.5 16 km NW of Emery, 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.