QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

9 km WNW of Alton, Utah

· 14 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kane County 71 kmIron County 81 kmWashington County 84 kmPiute County 104 kmGarfield County 107 kmBeaver County 114 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 1.7 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Kane County, 71 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2083 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 37.4712, -112.5757. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kane County, UT 71 km (44 mi) WNW of here earthquakes near Kane County
Iron County, UT 81 km (50 mi) SE of here earthquakes near Iron County
Washington County, UT 84 km (52 mi) ENE of here earthquakes near Washington County
Piute County, UT 104 km (65 mi) SSW of here earthquakes near Piute County
Garfield County, UT 107 km (66 mi) WSW of here earthquakes near Garfield County
Beaver County, UT 114 km (71 mi) SSE of here earthquakes near Beaver County

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

Aftershocks so far

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

  1. 1.5 21 km SE of Kanarraville, Utah
  2. 1.7 21 km SE of Kanarraville, Utah
  3. 2.4 10 km WNW of Panguitch, Utah
  4. 2.0 20 km SE of Kanarraville, Utah
  5. 1.7 20 km SE of Kanarraville, Utah
  6. 1.8 20 km SE of Kanarraville, Utah
  7. 2.3 21 km ESE of Kanarraville, Utah
  8. 1.6 22 km SE of Kanarraville, Utah
  9. 1.6 21 km SE of Kanarraville, Utah
  10. 2.3 21 km ESE of Kanarraville, Utah
  11. 3.1 20 km ESE of Kanarraville, Utah
  12. 2.1 21 km ESE of Kanarraville, Utah
  13. 1.6 9 km WNW of Panguitch, Utah
  14. 1.5 12 km S of Cedar City, Utah
  15. 2.0 9 km WNW of Panguitch, 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

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