QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

1 km ENE of Helper, Utah

· -2.9 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carbon County 21 kmSanpete County 73 kmDuchesne County 75 kmEmery County 77 kmWasatch County 77 kmUtah County 85 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 1.5 (md)
Depth
-2.9 km below the surface
Felt
no reports yet
Nearest
Carbon County, 21 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 522 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 39.6922, -110.8363. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carbon County, UT 21 km (13 mi) W of here earthquakes near Carbon County
Sanpete County, UT 73 km (45 mi) ENE of here earthquakes near Sanpete County
Duchesne County, UT 75 km (47 mi) SSW of here earthquakes near Duchesne County
Emery County, UT 77 km (48 mi) N of here earthquakes near Emery County
Wasatch County, UT 77 km (48 mi) SSE of here earthquakes near Wasatch County
Utah County, UT 85 km (53 mi) ESE of here earthquakes near Utah County

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

Aftershocks so far

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

  1. 1.1 5 km SSW of Hiawatha, Utah
  2. 1.5 2 km NNE of Sunnyside, Utah
  3. 1.6 4 km NNE of Kenilworth, Utah
  4. 1.7 6 km SE of Sunnyside, Utah
  5. 2.4 4 km WSW of Clear Creek, Utah
  6. 1.7 1 km NNW of Kenilworth, Utah
  7. 1.5 9 km W of Clear Creek, Utah
  8. 1.6 6 km ENE of Kenilworth, Utah
  9. 1.8 2 km NW of Kenilworth, Utah
  10. 1.9 4 km W of Clear Creek, Utah
  11. 2.0 11 km SW of Clear Creek, Utah
  12. 1.9 5 km W of Clear Creek, Utah
  13. 2.1 4 km SW of Clear Creek, Utah
  14. 2.8 7 km SW of Clear Creek, Utah
  15. 2.0 9 km SW of Clear Creek, 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.