QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

27 km WNW of Boulder Town, Utah

· 9.4 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 31 kmPiute County 51 kmWayne County 66 kmSevier County 80 kmKane County 85 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 2.1 (ml)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Garfield County, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 54 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 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 38.0338, -111.6872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, UT 31 km (19 mi) NW of here earthquakes near Garfield County
Piute County, UT 51 km (32 mi) SE of here earthquakes near Piute County
Wayne County, UT 66 km (41 mi) WSW of here earthquakes near Wayne County
Sevier County, UT 80 km (50 mi) S of here earthquakes near Sevier County
Kane County, UT 85 km (53 mi) N of here earthquakes near Kane County
Emery County, UT 137 km (85 mi) SW of here earthquakes near Emery County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 1.7 19 km SSE of Boulder Town, 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.