QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

8 km WSW of Snowville, Utah

· 8.0 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oneida County 35 kmBox Elder County 42 kmCassia County 77 kmPower County 83 kmFranklin County 85 kmCache County 92 kmBannock County 96 kmWeber County 108 kmDavis County 113 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 1.8 (ml)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Oneida County, 35 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 719 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 41.9495, -112.8123. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Oneida County, ID 35 km (22 mi) SW of here earthquakes near Oneida County
Box Elder County, UT 42 km (26 mi) NNE of here earthquakes near Box Elder County
Cassia County, ID 77 km (48 mi) ESE of here earthquakes near Cassia County
Power County, ID 83 km (51 mi) S of here earthquakes near Power County
Franklin County, ID 85 km (53 mi) WSW of here earthquakes near Franklin County
Cache County, UT 92 km (57 mi) WNW of here earthquakes near Cache County

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

Aftershocks so far

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

  1. 2.3 26 km NNW of Snowville, Utah
  2. 1.9 18 km SW of Howell, Utah
  3. 3.1 12 km SSW of Snowville, Utah
  4. 1.9 11 km SSW of Snowville, Utah
  5. 1.9 11 km SSW of Snowville, Utah
  6. 1.9 8 km WSW of Thatcher, Utah
  7. 1.9 7 km W of Thatcher, Utah
  8. 1.8 7 km W of Thatcher, Utah
  9. 2.0 23 km NNW of Snowville, Utah
  10. 2.1 12 km SSW of Snowville, Utah
  11. 1.9 29 km SSW of Snowville, Utah
  12. 1.6 29 km SSW of Snowville, Utah
  13. 2.7 7 km NNE of Howell, Utah
  14. 1.9 14 km WNW of Howell, Utah
  15. 2.2 13 km ESE 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.

On USGS

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