QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

10 km SW of Milford, Utah

· 5.4 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Beaver County 14 kmIron County 50 kmMillard County 71 kmPiute County 84 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
5.4 km below the surface
Felt
no reports yet
Nearest
Beaver County, 14 km WNW
Nearest mapped fault
Mineral Mountains (west side) faults, 8 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3023 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 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× 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 38.3212, -113.0868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Beaver County, UT 14 km (9 mi) ESE of here earthquakes near Beaver County
Iron County, UT 50 km (31 mi) NNE of here earthquakes near Iron County
Millard County, UT 71 km (44 mi) S of here earthquakes near Millard County
Piute County, UT 84 km (52 mi) W of here earthquakes near Piute County
Sevier County, UT 121 km (75 mi) WSW of here earthquakes near Sevier County
Washington County, UT 123 km (76 mi) NNE of here earthquakes near Washington County

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

Aftershocks so far

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

  1. 2.5 28 km WNW of Milford, Utah
  2. 1.6 Utah
  3. 1.8 19 km SE of Minersville, Utah
  4. 2.2 18 km SE of Minersville, Utah
  5. 3.0 18 km SE of Minersville, Utah
  6. 1.8 20 km NNE of Paragonah, Utah
  7. 1.8 0 km SE of Beaver, Utah
  8. 2.3 19 km N of Paragonah, Utah
  9. 2.1 Utah
  10. 2.3 19 km WSW of Minersville, Utah
  11. 2.4 18 km SSE of Beaver, Utah
  12. 2.0 19 km N of Paragonah, Utah
  13. 2.5 19 km N of Paragonah, Utah
  14. 3.6 19 km N of Paragonah, Utah
  15. 2.5 19 km N of Paragonah, 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.