QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Utah

· 9.9 km deep · released about 16 lb of TNT

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10 km30 km60 km120 km N Beaver County 11 kmIron County 52 kmMillard County 67 kmPiute County 86 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
9.9 km below the surface
Felt
no reports yet
Nearest
Beaver County, 11 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1689 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 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 38.3513, -113.1133. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Beaver County, UT 11 km (7 mi) E of here earthquakes near Beaver County
Iron County, UT 52 km (32 mi) NNE of here earthquakes near Iron County
Millard County, UT 67 km (42 mi) S of here earthquakes near Millard County
Piute County, UT 86 km (53 mi) W of here earthquakes near Piute County
Sevier County, UT 121 km (75 mi) WSW of here earthquakes near Sevier County
Kane County, UT 165 km (103 mi) NW of here earthquakes near Kane County

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

Aftershocks so far

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

  1. 1.7 16 km NW of Parowan, Utah
  2. 1.7 Utah
  3. 1.9 15 km NNW of Paragonah, Utah
  4. 1.8 Utah
  5. 1.8 10 km SSW of Beaver, Utah
  6. 1.7 17 km ENE of Milford, Utah
  7. 1.8 17 km S of Beaver, Utah
  8. 1.7 16 km ENE of Milford, Utah
  9. 2.1 18 km NE of Milford, Utah
  10. 2.1 18 km NE of Milford, Utah
  11. 1.8 18 km NE of Milford, Utah
  12. 1.6 Utah
  13. 1.7 20 km SW of Minersville, Utah
  14. 1.7 17 km ENE of Milford, Utah
  15. 1.9 18 km NE of Milford, 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.