QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

4 km NW of Aurora, Utah

· 13 km deep · released about 400 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sevier County 26 kmSanpete County 59 kmPiute County 69 kmMillard County 100 kmEmery County 109 kmJuab County 110 kmWayne County 115 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 2.8 (ml)
Depth
13 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Sevier County, 26 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1844 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 400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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 38.9475, -111.9762. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sevier County, UT 26 km (16 mi) NNW of here earthquakes near Sevier County
Sanpete County, UT 59 km (36 mi) SW of here earthquakes near Sanpete County
Piute County, UT 69 km (43 mi) N of here earthquakes near Piute County
Millard County, UT 100 km (62 mi) E of here earthquakes near Millard County
Emery County, UT 109 km (68 mi) W of here earthquakes near Emery County
Juab County, UT 110 km (69 mi) SE of here earthquakes near Juab County

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

Aftershocks so far

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

  1. 1.7 10 km NW of Fayette, Utah
  2. 1.8 4 km WNW of Joseph, Utah
  3. 1.5 9 km SSE of Joseph, Utah
  4. 2.0 7 km SSE of Joseph, Utah
  5. 1.9 5 km S of Joseph, Utah
  6. 2.3 8 km NW of Fayette, Utah
  7. 1.8 8 km NW of Fayette, Utah
  8. 1.5 16 km W of Emery, Utah
  9. 1.5 16 km W of Emery, Utah
  10. 2.4 3 km NNW of Joseph, Utah
  11. 1.5 6 km S of Joseph, Utah
  12. 3.4 4 km S of Joseph, Utah
  13. 1.6 7 km SSE of Joseph, Utah
  14. 2.2 4 km S of Joseph, Utah
  15. 1.9 5 km S of Joseph, 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.