QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

47 km SW of Howell, Utah

· 11 km deep · released about 2.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Box Elder County 20 kmDavis County 77 kmOneida County 80 kmWeber County 87 kmCache County 97 kmCassia County 106 kmFranklin County 114 kmMorgan County 117 kmTooele 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 3.5 (ml)
Depth
11 km below the surface
Felt
17 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Box Elder County, 20 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 225 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 17 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 72,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,300× the energy of this one
  4. This earthquake M 3.5 about 2.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.9× 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 41.5113, -112.8682. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Box Elder County, UT 20 km (13 mi) SE of here earthquakes near Box Elder County
Davis County, UT 77 km (48 mi) NW of here earthquakes near Davis County
Oneida County, ID 80 km (50 mi) SSW of here earthquakes near Oneida County
Weber County, UT 87 km (54 mi) WNW of here earthquakes near Weber County
Cache County, UT 97 km (60 mi) WSW of here earthquakes near Cache County
Cassia County, ID 106 km (66 mi) SE of here earthquakes near Cassia 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. 2.0 Utah
  2. 1.6 70 km W of Hooper, Utah
  3. 1.6 46 km SW of Howell, Utah
  4. 1.8 Utah
  5. 2.1 70 km NW of Grantsville, Utah
  6. 2.0 Utah
  7. 2.1 2 km SSW of Howell, Utah
  8. 2.1 86 km E of Montello, Nevada
  9. 1.5 58 km W of Hooper, Utah
  10. 1.6 14 km WNW of Howell, Utah
  11. 1.7 24 km SSW of Snowville, Utah
  12. 2.0 67 km W of Hooper, Utah
  13. 1.9 65 km W of Hooper, Utah
  14. 2.0 19 km S of Snowville, Utah
  15. 1.8 66 km W of Hooper, 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.