QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

13 km SW of Thatcher, Utah

· 6.7 km deep · released about 1,800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Box Elder County 55 kmCache County 57 kmWeber County 57 kmDavis County 65 kmOneida County 66 kmFranklin County 80 kmMorgan County 89 kmRich County 97 kmSalt Lake County 111 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 3.2 (ml)
Depth
6.7 km below the surface
Felt
11 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Box Elder County, 55 km W
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. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 190,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,000× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× 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 41.5998, -112.4030. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Box Elder County, UT 55 km (34 mi) E of here earthquakes near Box Elder County
Cache County, UT 57 km (35 mi) WSW of here earthquakes near Cache County
Weber County, UT 57 km (36 mi) NW of here earthquakes near Weber County
Davis County, UT 65 km (40 mi) NNW of here earthquakes near Davis County
Oneida County, ID 66 km (41 mi) S of here earthquakes near Oneida County
Franklin County, ID 80 km (50 mi) SW of here earthquakes near Franklin County

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

Aftershocks so far

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

  1. 2.0 10 km NNW of Howell, Utah
  2. 2.1 11 km NNW of Howell, Utah
  3. 2.0 11 km NNW of Howell, Utah
  4. 1.8 11 km NNW of Howell, Utah
  5. 2.8 10 km NNW of Howell, Utah
  6. 1.5 12 km SSW of Snowville, Utah
  7. 2.4 13 km SSW of Snowville, Utah
  8. 2.0 10 km NNW of Howell, Utah
  9. 2.0 10 km NNW of Howell, Utah
  10. 2.1 11 km NNW of Howell, Utah
  11. 2.4 11 km ESE of Snowville, Utah
  12. 1.7 5 km WSW of Portage, Utah
  13. 2.2 12 km W of Willard, Utah
  14. 1.8 22 km SSW of Snowville, Utah
  15. 1.8 21 km SSW of Snowville, 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 4.4 on 2024-05-05 — it released about 61 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.