QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

35 km SW of Loma, Colorado

· 5.1 km deep · released about 77 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grand County 37 kmMesa County 60 kmMontrose County 102 kmDelta 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 2.3 (ml)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Grand County, 37 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 429 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 39.0080, -109.1520. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grand County, UT 37 km (23 mi) E of here earthquakes near Grand County
Mesa County, CO 60 km (37 mi) W of here earthquakes near Mesa County
Montrose County, CO 102 km (63 mi) NW of here earthquakes near Montrose County
Delta County, CO 113 km (70 mi) W of here earthquakes near Delta County
Garfield County, CO 125 km (78 mi) WSW of here earthquakes near Garfield County
San Miguel County, CO 128 km (79 mi) NNW of here earthquakes near San Miguel 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 37 km NE of Thompson Springs, 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.