QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

43 km WSW of Milford, Utah

· 7.6 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Beaver County 23 kmIron County 42 kmMillard County 83 kmWashington County 111 kmPiute County 118 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
7.6 km below the surface
Felt
no reports yet
Nearest
Beaver County, 23 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2295 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 17 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 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 38.2635, -113.4783. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Beaver County, UT 23 km (15 mi) WSW of here earthquakes near Beaver County
Iron County, UT 42 km (26 mi) NNW of here earthquakes near Iron County
Millard County, UT 83 km (51 mi) SSW of here earthquakes near Millard County
Washington County, UT 111 km (69 mi) N of here earthquakes near Washington County
Piute County, UT 118 km (73 mi) W of here earthquakes near Piute County

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

Aftershocks so far

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

  1. 2.1 9 km SW of Milford, Utah
  2. 2.1 8 km SW of Milford, Utah
  3. 1.6 11 km SSW of Milford, Utah
  4. 2.5 9 km SW of Milford, Utah
  5. 1.6 9 km SW of Milford, Utah
  6. 1.7 10 km SW of Milford, Utah
  7. 2.1 9 km SSW of Milford, Utah
  8. 3.0 9 km SW of Milford, Utah
  9. 1.5 9 km SW of Milford, Utah
  10. 1.7 Utah
  11. 2.0 9 km SW of Milford, Utah
  12. 1.9 9 km SW of Milford, Utah
  13. 1.9 9 km SSW of Milford, Utah
  14. 2.4 9 km SW of Milford, Utah
  15. 2.2 9 km SW 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.