QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Utah

· -3.5 km deep · released about 38 lb of TNT

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10 km30 km60 km120 km N Emery County 49 kmSanpete County 50 kmSevier County 52 kmWayne County 84 kmCarbon County 98 kmPiute County 102 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 2.1 (ml)
Depth
-3.5 km below the surface
Felt
no reports yet
Nearest
Emery County, 49 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1482 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 38.9803, -111.2905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Emery County, UT 49 km (31 mi) W of here earthquakes near Emery County
Sanpete County, UT 50 km (31 mi) SSE of here earthquakes near Sanpete County
Sevier County, UT 52 km (32 mi) ENE of here earthquakes near Sevier County
Wayne County, UT 84 km (52 mi) NNW of here earthquakes near Wayne County
Carbon County, UT 98 km (61 mi) SW of here earthquakes near Carbon County
Piute County, UT 102 km (63 mi) NE of here earthquakes near Piute 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. 1.7 12 km WNW of Emery, Utah
  2. 1.9 21 km E of Mayfield, Utah
  3. 1.5 16 km ESE of Castle Dale, Utah
  4. 1.9 21 km E of Mayfield, Utah
  5. 2.1 13 km NW of Orangeville, Utah
  6. 1.6 25 km E of Glenwood, Utah
  7. 1.8 13 km NW of Orangeville, Utah
  8. 1.9 12 km NW of Emery, Utah
  9. 2.0 18 km SE of Castle Dale, Utah
  10. 2.6 21 km E of Mayfield, Utah
  11. 1.6 16 km SSE of Salina, Utah
  12. 1.7 8 km ENE of Ephraim, Utah
  13. 2.0 18 km SSW of Emery, Utah
  14. 1.8 21 km WSW of Emery, Utah
  15. 1.6 12 km WNW of Emery, 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.