QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

4 km NNW of West Valley City, Utah

· 9.3 km deep · released about 2.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salt Lake County 11 kmDavis County 38 kmMorgan County 56 kmWeber County 62 kmUtah County 74 kmWasatch County 85 kmSummit County 91 kmTooele County 97 kmCache 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 3.5 (ml)
Depth
9.3 km below the surface
Felt
4122 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Salt Lake County, 11 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 51 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4122 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.9 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 59,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,900× the energy of this one
  4. This earthquake M 3.5 about 2.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 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 40.7243, -112.0267. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salt Lake County, UT 11 km (7 mi) NW of here earthquakes near Salt Lake County
Davis County, UT 38 km (23 mi) SSE of here earthquakes near Davis County
Morgan County, UT 56 km (35 mi) SW of here earthquakes near Morgan County
Weber County, UT 62 km (39 mi) SSW of here earthquakes near Weber County
Utah County, UT 74 km (46 mi) NNW of here earthquakes near Utah County
Wasatch County, UT 85 km (53 mi) WNW of here earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 1.0 6 km SSW of Bingham Canyon, Utah
  2. 2.0 6 km WNW of Lehi, Utah
  3. 1.6 5 km SSW of Bingham Canyon, Utah
  4. 2.3 3 km SW of Bingham Canyon, Utah
  5. 1.6 5 km NNW of Saratoga Springs, Utah
  6. 2.9 6 km NNW of Saratoga Springs, Utah
  7. 1.6 6 km NNW of Saratoga Springs, Utah
  8. 1.6 2 km ENE of Summit Park, Utah
  9. 2.2 7 km NNW of Saratoga Springs, Utah
  10. 2.2 5 km ENE of Magna, Utah
  11. 1.7 6 km NW of Saratoga Springs, Utah
  12. 2.1 5 km NW of Summit Park, Utah
  13. 1.8 8 km NW of Saratoga Springs, Utah
  14. 1.7 5 km NE of Magna, Utah
  15. 1.7 5 km ENE of Magna, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.7 on 2020-03-18 — it released about 1,900 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.