QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Utah

· 2.6 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 25 kmUtah County 64 kmCarbon County 74 kmWasatch County 88 kmEmery County 89 kmSevier County 97 kmJuab County 116 kmDuchesne 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
2.6 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 25 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1350 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 39.5753, -111.4465. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 25 km (16 mi) NNE of here earthquakes near Sanpete County
Utah County, UT 64 km (39 mi) SSE of here earthquakes near Utah County
Carbon County, UT 74 km (46 mi) W of here earthquakes near Carbon County
Wasatch County, UT 88 km (55 mi) SSW of here earthquakes near Wasatch County
Emery County, UT 89 km (55 mi) NW of here earthquakes near Emery County
Sevier County, UT 97 km (60 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

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

  1. 1.7 8 km SSW of Hiawatha, Utah
  2. 1.6 17 km NW of Ferron, Utah
  3. 1.7 4 km SSE of Fairview, Utah
  4. 1.7 8 km W of Clear Creek, Utah
  5. 2.1 10 km WSW of Clear Creek, Utah
  6. 1.6 17 km SSW of Levan, Utah
  7. 1.7 13 km NW of Orangeville, Utah
  8. 1.8 10 km NW of Helper, Utah
  9. 1.9 6 km S of Clear Creek, Utah
  10. 1.6 11 km NW of Helper, Utah
  11. 2.0 9 km E of Fairview, Utah
  12. 1.9 9 km E of Fairview, Utah
  13. 1.5 4 km WNW of Helper, Utah
  14. 1.6 5 km WNW of Scofield, Utah
  15. 2.1 4 km WSW of Mount Pleasant, 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

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