QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

27 km W of Emery, Utah

· 21 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sevier County 27 kmSanpete County 55 kmEmery County 74 kmPiute County 79 kmWayne County 85 kmGarfield County 117 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
21 km below the surface
Felt
no reports yet
Nearest
Sevier County, 27 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2457 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 38.8827, -111.5558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sevier County, UT 27 km (17 mi) NE of here earthquakes near Sevier County
Sanpete County, UT 55 km (34 mi) S of here earthquakes near Sanpete County
Emery County, UT 74 km (46 mi) W of here earthquakes near Emery County
Piute County, UT 79 km (49 mi) NE of here earthquakes near Piute County
Wayne County, UT 85 km (53 mi) NW of here earthquakes near Wayne County
Garfield County, UT 117 km (73 mi) N of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.9 12 km WNW of Emery, Utah
  2. 1.8 19 km WNW of Emery, Utah
  3. 1.5 5 km ENE of Mayfield, Utah
  4. 2.6 12 km N of Koosharem, Utah
  5. 2.0 30 km NE of Fremont, Utah
  6. 2.0 26 km SW of Emery, Utah
  7. 1.7 27 km SSW of Emery, Utah
  8. 2.2 27 km SW of Emery, Utah
  9. 2.0 12 km WNW of Emery, Utah
  10. 2.2 4 km N of Richfield, Utah
  11. 2.4 16 km NNE of Koosharem, Utah
  12. 1.5 25 km ESE of Salina, Utah
  13. 1.7 5 km SSE of Sterling, Utah
  14. 1.9 20 km SE of Mayfield, Utah
  15. 1.6 10 km ESE of Glenwood, 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.