QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

29 km SW of Orchard Mesa, Colorado

· 5.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mesa County 33 kmMontrose County 63 kmGrand County 73 kmDelta County 77 kmSan Miguel County 95 kmOuray County 112 kmGarfield 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 1.7 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Mesa County, 33 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2290 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 38.8256, -108.7532. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mesa County, CO 33 km (21 mi) SW of here earthquakes near Mesa County
Montrose County, CO 63 km (39 mi) NW of here earthquakes near Montrose County
Grand County, UT 73 km (45 mi) ESE of here earthquakes near Grand County
Delta County, CO 77 km (48 mi) W of here earthquakes near Delta County
San Miguel County, CO 95 km (59 mi) NNW of here earthquakes near San Miguel County
Ouray County, CO 112 km (70 mi) NW of here earthquakes near Ouray County

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

Aftershocks so far

12 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. 2.1 28 km NNE of Castle Valley, Utah
  8. 1.7 29 km NNE of Castle Valley, Utah
  9. 1.7 20 km SSW of Orchard Mesa, Colorado
  10. 2.1 20 km WNW of Delta, Colorado
  11. 2.5 26 km WNW of Delta, Colorado
  12. 1.8 24 km NE of La Sal, 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.