QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

24 km SW of Orchard Mesa, Colorado

· 1.9 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mesa County 28 kmMontrose County 64 kmDelta County 74 kmGrand County 75 kmSan Miguel County 98 kmGarfield County 108 kmOuray 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 1.8 (ml)
Depth
1.9 km below the surface
Felt
no reports yet
Nearest
Mesa County, 28 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2417 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 38.8627, -108.7204. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mesa County, CO 28 km (18 mi) SW of here earthquakes near Mesa County
Montrose County, CO 64 km (40 mi) NW of here earthquakes near Montrose County
Delta County, CO 74 km (46 mi) W of here earthquakes near Delta County
Grand County, UT 75 km (47 mi) E of here earthquakes near Grand County
San Miguel County, CO 98 km (61 mi) NNW of here earthquakes near San Miguel County
Garfield County, CO 108 km (67 mi) SW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 2.0 14 km NE of Fruita, Colorado
  2. 2.3 35 km SW of Loma, Colorado
  3. 1.8 35 km WSW of Loma, Colorado
  4. 3.2 34 km W of Delta, Colorado
  5. 1.9 19 km SSE of Orchard Mesa, Colorado
  6. 1.9 34 km W of Delta, Colorado
  7. 1.7 20 km SSW of Orchard Mesa, Colorado
  8. 2.1 20 km WNW of Delta, Colorado
  9. 2.5 26 km WNW of Delta, Colorado
  10. 1.7 29 km SW of Orchard Mesa, Colorado
  11. 2.2 17 km WNW of Loma, Colorado
  12. 1.5 19 km WSW of Redlands, Colorado
  13. 1.8 27 km W of Delta, Colorado

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.