QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

3 km S of Wallsburg, Utah

· 9.3 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Wasatch County 23 kmUtah County 33 kmSalt Lake County 54 kmSummit County 70 kmMorgan County 83 kmDuchesne County 85 kmDavis County 100 kmCarbon County 104 kmWeber County 109 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 2.1 (ml)
Depth
9.3 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Wasatch County, 23 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1956 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 40.3535, -111.4303. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Wasatch County, UT 23 km (14 mi) W of here earthquakes near Wasatch County
Utah County, UT 33 km (20 mi) NE of here earthquakes near Utah County
Salt Lake County, UT 54 km (34 mi) SE of here earthquakes near Salt Lake County
Summit County, UT 70 km (43 mi) SW of here earthquakes near Summit County
Morgan County, UT 83 km (52 mi) S of here earthquakes near Morgan County
Duchesne County, UT 85 km (53 mi) W of here earthquakes near Duchesne County

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

Aftershocks so far

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

  1. 1.7 6 km WNW of Lehi, Utah
  2. 1.9 24 km SSE of Independence, Utah
  3. 2.4 24 km SSE of Independence, Utah
  4. 1.8 25 km SSE of Independence, Utah
  5. 2.2 25 km SSE of Independence, Utah
  6. 1.5 24 km SSE of Independence, Utah
  7. 2.0 25 km SSE of Independence, Utah
  8. 1.8 6 km ESE of Daniel, Utah
  9. 2.0 7 km NNW of Saratoga Springs, Utah
  10. 1.6 6 km WNW of Lehi, Utah
  11. 1.6 7 km WNW of Lehi, Utah
  12. 1.7 4 km WNW of Silver Summit, Utah
  13. 2.8 6 km WNW of Independence, Utah
  14. 1.9 9 km W of Independence, Utah
  15. 1.8 3 km WSW of Bluffdale, 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.