QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

17 km WNW of Alton, Utah

· 18 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Iron County 72 kmKane County 78 kmWashington County 79 kmPiute County 102 kmBeaver County 107 kmGarfield County 111 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
18 km below the surface
Felt
no reports yet
Nearest
Iron County, 72 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 776 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 12 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 37.5178, -112.6492. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Iron County, UT 72 km (45 mi) SE of here earthquakes near Iron County
Kane County, UT 78 km (49 mi) WNW of here earthquakes near Kane County
Washington County, UT 79 km (49 mi) ENE of here earthquakes near Washington County
Piute County, UT 102 km (63 mi) SSW of here earthquakes near Piute County
Beaver County, UT 107 km (66 mi) SSE of here earthquakes near Beaver County
Garfield County, UT 111 km (69 mi) WSW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.8 7 km SW of Alton, Utah
  2. 1.5 2 km W of Panguitch, Utah
  3. 1.9 12 km ESE of Hatch, Utah
  4. 2.1 11 km E of Hatch, Utah
  5. 1.6 12 km E of Hatch, Utah
  6. 1.9 11 km ENE of Kanarraville, Utah
  7. 1.6 11 km E of Hatch, Utah
  8. 1.6 12 km E of Hatch, Utah
  9. 2.4 11 km E of Hatch, Utah
  10. 2.1 11 km E of Kanarraville, Utah
  11. 2.0 9 km E of Springdale, Utah
  12. 1.6 6 km SSE of Cedar City, Utah
  13. 2.5 9 km E of Springdale, Utah
  14. 1.7 13 km SE of Hatch, Utah
  15. 1.9 9 km E of Springdale, 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 12,000 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.