QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6ml

9 km E of Springdale, Utah

· 20 km deep · released about 4.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 53 kmIron County 88 kmKane County 96 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 3.6 (ml)
Depth
20 km below the surface
Felt
161 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Washington County, 53 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1671 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 161 people have reported feeling it to USGS.

How big was it?

This earthquake released about 4.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 42,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,300× the energy of this one
  4. This earthquake M 3.6 about 4.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 8.5× more

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 37.1905, -112.8938. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washington County, UT 53 km (33 mi) E of here earthquakes near Washington County
Iron County, UT 88 km (55 mi) SSE of here earthquakes near Iron County
Kane County, UT 96 km (60 mi) W of here earthquakes near Kane County

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

Aftershocks so far

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

  1. 1.8 2 km ESE of Colorado City, Arizona
  2. 2.1 2 km ESE of Colorado City, Arizona
  3. 1.6 2 km ESE of Hildale, Utah
  4. 3.8 3 km ESE of Colorado City, Arizona
  5. 2.3 10 km SW of Centennial Park, Arizona
  6. 1.8 10 km SSE of Cedar City, Utah
  7. 1.8 6 km SE of Fredonia, Arizona
  8. 1.9 10 km ENE of Kanarraville, Utah
  9. 2.1 5 km NNW of Hildale, Utah
  10. 2.1 1 km N of Cane Beds, Arizona
  11. 1.5 3 km NW of Leeds, Utah
  12. 2.0 12 km ENE of Springdale, Utah
  13. 1.9 11 km E of Kanarraville, Utah
  14. 1.8 9 km ENE of Hildale, Utah
  15. 1.6 20 km S of Centennial Park, Arizona

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.