QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

8 km ESE of Alton, Utah

· 17 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kane County 53 kmGarfield County 96 kmWashington County 98 kmIron County 98 kmPiute County 107 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 2.2 (ml)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Kane County, 53 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1405 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 54 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 37.3977, -112.3957. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kane County, UT 53 km (33 mi) WNW of here earthquakes near Kane County
Garfield County, UT 96 km (60 mi) WSW of here earthquakes near Garfield County
Washington County, UT 98 km (61 mi) E of here earthquakes near Washington County
Iron County, UT 98 km (61 mi) SE of here earthquakes near Iron County
Piute County, UT 107 km (66 mi) SSW of here earthquakes near Piute County
Beaver County, UT 130 km (81 mi) SE of here earthquakes near Beaver 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. 4.5 24 km S of Brian Head, Utah
  2. 1.7 9 km W of Bryce Canyon City, Utah
  3. 1.8 9 km WSW of Bryce Canyon City, Utah
  4. 2.3 4 km WNW of Panguitch, Utah
  5. 1.6 21 km S of Brian Head, Utah
  6. 2.1 13 km ESE of Hatch, Utah
  7. 1.6 20 km S of Brian Head, Utah
  8. 1.5 14 km E of Springdale, Utah
  9. 1.9 10 km E of Springdale, Utah
  10. 1.9 3 km W of Panguitch, Utah
  11. 1.8 12 km E of Alton, Utah
  12. 1.7 13 km WSW of Hatch, Utah
  13. 2.1 Utah
  14. 1.6 14 km SW of Hatch, Utah
  15. 1.8 10 km SW of Hatch, 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.