QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

28 km ENE of Boulder Town, Utah

· 20 km deep · released about 1,500 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Wayne County 27 kmGarfield County 36 kmPiute County 92 kmSevier County 97 kmKane County 104 kmEmery County 113 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 3.1 (ml)
Depth
20 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Wayne County, 27 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2213 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,500 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,200× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× 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 38.0460, -111.1432. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Wayne County, UT 27 km (17 mi) SSW of here earthquakes near Wayne County
Garfield County, UT 36 km (22 mi) NE of here earthquakes near Garfield County
Piute County, UT 92 km (57 mi) ESE of here earthquakes near Piute County
Sevier County, UT 97 km (60 mi) SE of here earthquakes near Sevier County
Kane County, UT 104 km (65 mi) NE of here earthquakes near Kane County
Emery County, UT 113 km (70 mi) SSW of here earthquakes near Emery County

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

Aftershocks so far

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

  1. 1.7 19 km SSE of Boulder Town, Utah
  2. 2.1 27 km WNW of Boulder Town, Utah
  3. 1.6 28 km ENE of Torrey, Utah
  4. 2.4 31 km SE of Boulder Town, Utah
  5. 1.5 28 km E of Torrey, Utah
  6. 4.0 29 km ENE of Torrey, Utah
  7. 2.2 28 km E of Torrey, Utah
  8. 1.6 20 km SE of Boulder Town, Utah
  9. 2.6 28 km NE of Boulder Town, Utah
  10. 2.5 47 km NNW of Halls Crossing, Utah
  11. 3.5 26 km SSE of Boulder Town, Utah
  12. 2.9 23 km WNW of Hanksville, Utah
  13. 2.0 26 km SE of Boulder Town, Utah
  14. 1.8 13 km E of Boulder Town, Utah
  15. 1.7 13 km ESE of Torrey, 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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