QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

15 km W of Hiawatha, Utah

· 1.6 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 35 kmCarbon County 56 kmEmery County 68 kmUtah County 80 kmWasatch County 93 kmSevier County 99 kmDuchesne County 110 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 (md)
Depth
1.6 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 35 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2785 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 13 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 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 39.4978, -111.1965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 35 km (22 mi) ENE of here earthquakes near Sanpete County
Carbon County, UT 56 km (35 mi) WSW of here earthquakes near Carbon County
Emery County, UT 68 km (42 mi) NW of here earthquakes near Emery County
Utah County, UT 80 km (50 mi) SSE of here earthquakes near Utah County
Wasatch County, UT 93 km (58 mi) S of here earthquakes near Wasatch County
Sevier County, UT 99 km (61 mi) NNE of here earthquakes near Sevier County

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

Aftershocks so far

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

  1. 2.6 14 km E of Manti, Utah
  2. 1.9 10 km WNW of Clear Creek, Utah
  3. 1.6 8 km W of Clear Creek, Utah
  4. 1.9 9 km WNW of Clear Creek, Utah
  5. 1.8 9 km S of Clear Creek, Utah
  6. 2.4 9 km S of Clear Creek, Utah
  7. 1.6 10 km S of Clear Creek, Utah
  8. 1.5 Utah
  9. 1.8 9 km WSW of Scofield, Utah
  10. 1.6 12 km WSW of Scofield, Utah
  11. 1.6 10 km WNW of Clear Creek, Utah
  12. 2.2 20 km E of Mayfield, Utah
  13. 1.6 13 km SW of Clear Creek, Utah
  14. 1.6 9 km WNW of Helper, Utah
  15. 1.8 8 km E of Kenilworth, 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.