QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

8 km WNW of Enoch, Utah

· 7.6 km deep · released about 17 lb of TNT

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10 km30 km60 km120 km N Iron County 20 kmBeaver County 62 kmWashington County 69 kmPiute County 104 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
7.6 km below the surface
Felt
no reports yet
Nearest
Iron County, 20 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 839 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 17 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 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 37.8103, -113.1150. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Iron County, UT 20 km (12 mi) ESE of here earthquakes near Iron County
Beaver County, UT 62 km (38 mi) S of here earthquakes near Beaver County
Washington County, UT 69 km (43 mi) NNE of here earthquakes near Washington County
Piute County, UT 104 km (65 mi) SW of here earthquakes near Piute County
Kane County, UT 129 km (80 mi) WNW of here earthquakes near Kane County
Sevier County, UT 154 km (96 mi) SW of here earthquakes near Sevier County

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

Aftershocks so far

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

  1. 1.6 11 km E of Kanarraville, Utah
  2. 1.5 11 km E of Kanarraville, Utah
  3. 2.1 10 km E of Kanarraville, Utah
  4. 1.5 18 km SSW of Brian Head, Utah
  5. 1.5 11 km ENE of Kanarraville, Utah
  6. 1.7 16 km WNW of Cedar City, Utah
  7. 1.9 17 km WNW of Cedar City, Utah
  8. 2.3 16 km NW of Cedar City, Utah
  9. 1.8 6 km E of New Harmony, Utah
  10. 1.8 24 km S of Brian Head, Utah
  11. 1.6 24 km S of Brian Head, Utah
  12. 4.5 24 km S of Brian Head, Utah
  13. 1.7 27 km NE of Newcastle, Utah
  14. 2.0 12 km WNW of Cedar City, Utah
  15. 1.5 8 km NNW of Enoch, 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.