QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

4 km NW of Cedar City, Utah

· 10 km deep · released about 180 lb of TNT

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10 km30 km60 km120 km N Iron County 29 kmWashington County 61 kmBeaver County 73 kmPiute County 109 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 2.5 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Iron County, 29 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 269 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 83,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 59,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.2× the energy of this one
  4. This earthquake M 2.5 about 180 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 37.7122, -113.0915. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Iron County, UT 29 km (18 mi) SE of here earthquakes near Iron County
Washington County, UT 61 km (38 mi) NE of here earthquakes near Washington County
Beaver County, UT 73 km (45 mi) S of here earthquakes near Beaver County
Piute County, UT 109 km (68 mi) SW of here earthquakes near Piute County
Kane County, UT 123 km (76 mi) WNW of here earthquakes near Kane County
Sevier County, UT 160 km (100 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

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

  1. 1.1 18 km WNW of Cedar City, Utah
  2. 1.6 12 km ESE of Kanarraville, Utah
  3. 2.1 5 km ESE of Pine Valley, Utah
  4. 1.6 18 km WSW of Panguitch, Utah
  5. 1.8 2 km N of Summit, Utah
  6. 1.6 8 km NW of Enoch, Utah
  7. 1.7 10 km N of New Harmony, Utah
  8. 2.8 9 km N of New Harmony, Utah
  9. 1.6 13 km WNW of Paragonah, Utah
  10. 1.6 11 km E of Kanarraville, Utah
  11. 1.8 13 km SSE of Kanarraville, Utah
  12. 1.6 13 km SSE of Kanarraville, Utah
  13. 1.8 13 km SSE of Kanarraville, Utah
  14. 1.9 13 km SSE of Kanarraville, Utah
  15. 1.8 16 km NW of Parowan, 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 840 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.