QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

12 km ENE of Wolf Creek, Utah

· 10 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Weber County 20 kmMorgan County 34 kmCache County 39 kmRich County 46 kmDavis County 58 kmSalt Lake County 82 kmSummit County 83 kmFranklin County 88 kmUinta County 95 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
10 km below the surface
Felt
no reports yet
Nearest
Weber County, 20 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 622 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× 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 41.3857, -111.6917. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Weber County, UT 20 km (12 mi) NE of here earthquakes near Weber County
Morgan County, UT 34 km (21 mi) NNW of here earthquakes near Morgan County
Cache County, UT 39 km (24 mi) S of here earthquakes near Cache County
Rich County, UT 46 km (29 mi) SW of here earthquakes near Rich County
Davis County, UT 58 km (36 mi) NE of here earthquakes near Davis County
Salt Lake County, UT 82 km (51 mi) NNE of here earthquakes near Salt Lake County

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

Aftershocks so far

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

  1. 1.6 17 km E of North Logan, Utah
  2. 1.7 8 km SSW of Randolph, Utah
  3. 2.1 8 km SSW of Randolph, Utah
  4. 1.9 14 km ENE of Huntsville, Utah
  5. 1.6 15 km E of Providence, Utah
  6. 1.6 13 km ESE of Millville, Utah
  7. 1.9 16 km E of Providence, Utah
  8. 2.0 12 km E of Millville, Utah
  9. 2.6 12 km E of Millville, Utah
  10. 2.0 Utah
  11. 1.5 9 km ENE of Avon, Utah
  12. 2.1 3 km WNW of Huntsville, Utah
  13. 1.5 10 km ENE of Mountain Green, Utah
  14. 1.6 6 km SW of Corinne, Utah
  15. 1.6 18 km N of Henefer, 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.