QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

14 km SW of Thatcher, Utah

· 2.2 km deep · released about 1.7 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Box Elder County 54 kmWeber County 57 kmCache County 57 kmDavis County 64 kmOneida County 66 kmFranklin County 81 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 3.4 (md)
Depth
2.2 km below the surface
Felt
3 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Box Elder County, 54 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 804 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 99,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,100× the energy of this one
  4. This earthquake M 3.4 about 1.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3.6× 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 41.5948, -112.4077. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Box Elder County, UT 54 km (34 mi) E of here earthquakes near Box Elder County
Weber County, UT 57 km (35 mi) NW of here earthquakes near Weber County
Cache County, UT 57 km (36 mi) WSW of here earthquakes near Cache County
Davis County, UT 64 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 81 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

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

  1. 1.7 14 km SW of Thatcher, Utah
  2. 1.6 14 km SW of Thatcher, Utah
  3. 1.7 14 km SW of Thatcher, Utah
  4. 1.5 16 km SW of Thatcher, Utah
  5. 1.7 17 km SW of Thatcher, Utah
  6. 2.0 15 km SW of Thatcher, Utah
  7. 1.6 10 km WSW of Perry, Utah
  8. 1.9 15 km SW of Thatcher, Utah
  9. 1.9 17 km SW of Thatcher, Utah
  10. 3.2 13 km SW of Thatcher, Utah
  11. 1.7 14 km SW of Thatcher, Utah
  12. 2.2 21 km SSW of Snowville, Utah
  13. 1.9 6 km SSW of Thatcher, Utah
  14. 1.8 5 km SSW of Thatcher, Utah
  15. 2.3 17 km SW of Thatcher, 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 32 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.