QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

26 km SSE of Boulder Town, Utah

· 14 km deep · released about 2.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 20 kmKane County 65 kmWayne County 69 kmPiute County 102 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 3.5 (ml)
Depth
14 km below the surface
Felt
34 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Garfield County, 20 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 547 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 34 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 72,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,300× the energy of this one
  4. This earthquake M 3.5 about 2.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.9× 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 37.6912, -111.3017. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, UT 20 km (13 mi) SE of here earthquakes near Garfield County
Kane County, UT 65 km (40 mi) NE of here earthquakes near Kane County
Wayne County, UT 69 km (43 mi) SSW of here earthquakes near Wayne County
Piute County, UT 102 km (63 mi) SE of here earthquakes near Piute County
Sevier County, UT 126 km (78 mi) SSE of here earthquakes near Sevier County

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

Aftershocks so far

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

  1. 1.7 19 km SSE of Boulder Town, Utah
  2. 2.4 31 km SE of Boulder Town, Utah
  3. 1.6 20 km SE of Boulder Town, Utah
  4. 2.6 28 km NE of Boulder Town, Utah
  5. 2.5 47 km NNW of Halls Crossing, 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.