QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Utah

· 7.4 km deep · released about 23 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Weber County 37 kmCache County 44 kmDavis County 53 kmMorgan County 69 kmBox Elder County 74 kmRich County 79 kmFranklin County 80 kmOneida County 80 kmSalt Lake County 96 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 1.9 (ml)
Depth
7.4 km below the surface
Felt
no reports yet
Nearest
Weber County, 37 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1405 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 41.5097, -112.1817. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Weber County, UT 37 km (23 mi) NW of here earthquakes near Weber County
Cache County, UT 44 km (27 mi) SW of here earthquakes near Cache County
Davis County, UT 53 km (33 mi) N of here earthquakes near Davis County
Morgan County, UT 69 km (43 mi) NW of here earthquakes near Morgan County
Box Elder County, UT 74 km (46 mi) E of here earthquakes near Box Elder County
Rich County, UT 79 km (49 mi) W of here earthquakes near Rich County

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

Aftershocks so far

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

  1. 1.7 8 km ENE of Howell, Utah
  2. 1.7 3 km ESE of Honeyville, Utah
  3. 1.6 9 km ESE of Avon, Utah
  4. 2.3 Utah
  5. 1.5 8 km ESE of Avon, Utah
  6. 1.7 7 km ENE of Avon, Utah
  7. 1.9 16 km SW of Thatcher, Utah
  8. 3.7 15 km ENE of Wolf Creek, Utah
  9. 1.9 7 km NE of Howell, Utah
  10. 2.1 6 km E of Avon, Utah
  11. 1.6 6 km E of Avon, Utah
  12. 1.9 6 km E of Avon, Utah
  13. 1.7 16 km SW of Thatcher, Utah
  14. 1.5 3 km SE of Nibley, Utah
  15. 1.9 10 km ESE of Avon, 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.