QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

9 km NW of Enoch, Utah

· 3.6 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Iron County 20 kmBeaver County 59 kmWashington County 73 kmPiute County 101 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 (md)
Depth
3.6 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 676 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 14 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 37.8387, -113.0973. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Iron County, UT 20 km (12 mi) ESE of here earthquakes near Iron County
Beaver County, UT 59 km (37 mi) SSE of here earthquakes near Beaver County
Washington County, UT 73 km (45 mi) NNE of here earthquakes near Washington County
Piute County, UT 101 km (63 mi) WSW of here earthquakes near Piute County
Kane County, UT 129 km (80 mi) WNW of here earthquakes near Kane County
Sevier County, UT 151 km (94 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

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

  1. 1.5 12 km ENE of Kanarraville, Utah
  2. 2.0 25 km S of Brian Head, Utah
  3. 1.5 16 km NW of Parowan, Utah
  4. 1.5 13 km E of Kanarraville, Utah
  5. 1.8 11 km ENE of Kanarraville, Utah
  6. 2.0 12 km SSE of Cedar City, Utah
  7. 2.3 11 km ENE of Kanarraville, Utah
  8. 1.6 11 km ENE of Kanarraville, Utah
  9. 2.5 4 km NW of Cedar City, Utah
  10. 1.9 12 km ENE of Kanarraville, Utah
  11. 1.6 1 km SSW of Newcastle, Utah
  12. 1.8 15 km SSW of Beaver, Utah
  13. 1.7 11 km ENE of Kanarraville, Utah
  14. 1.9 11 km E of Kanarraville, Utah
  15. 2.3 11 km ENE of Kanarraville, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2024-07-29 — it released about 11,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.