QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

8 km ENE of Ephraim, Utah

· 4.4 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sanpete County 7 kmSevier County 77 kmEmery County 79 kmUtah County 82 kmCarbon County 84 kmWasatch County 108 kmJuab County 116 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 1.7 (ml)
Depth
4.4 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Sanpete County, 7 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1180 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 39.3962, -111.4963. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sanpete County, UT 7 km (5 mi) ENE of here earthquakes near Sanpete County
Sevier County, UT 77 km (48 mi) NNE of here earthquakes near Sevier County
Emery County, UT 79 km (49 mi) WNW of here earthquakes near Emery County
Utah County, UT 82 km (51 mi) S of here earthquakes near Utah County
Carbon County, UT 84 km (52 mi) WSW of here earthquakes near Carbon County
Wasatch County, UT 108 km (67 mi) SSW of here earthquakes near Wasatch County

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

Aftershocks so far

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

  1. 1.7 8 km W of Clear Creek, Utah
  2. 2.1 10 km WSW of Clear Creek, Utah
  3. 1.6 17 km SSW of Levan, Utah
  4. 1.7 13 km NW of Orangeville, Utah
  5. 1.6 11 km NW of Emery, Utah
  6. 1.5 4 km SW of Centerfield, Utah
  7. 1.9 6 km S of Clear Creek, Utah
  8. 2.0 9 km E of Fairview, Utah
  9. 1.9 9 km E of Fairview, Utah
  10. 1.5 16 km WNW of Emery, Utah
  11. 1.8 17 km WNW of Emery, Utah
  12. 1.6 5 km WNW of Scofield, Utah
  13. 2.1 4 km WSW of Mount Pleasant, Utah
  14. 1.5 15 km NW of Emery, Utah
  15. 1.6 3 km NNE 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.