QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

42 km SSW of Encampment, Wyoming

· 5.0 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Routt County 45 kmJackson County 65 kmCarbon County 92 kmMoffat County 103 kmGrand County 117 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 1.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Routt County, 45 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2444 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 40.8840, -107.0473. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Routt County, CO 45 km (28 mi) N of here earthquakes near Routt County
Jackson County, CO 65 km (41 mi) WNW of here earthquakes near Jackson County
Carbon County, WY 92 km (57 mi) S of here earthquakes near Carbon County
Moffat County, CO 103 km (64 mi) ENE of here earthquakes near Moffat County
Grand County, CO 117 km (73 mi) NW of here earthquakes near Grand County
Rio Blanco County, CO 141 km (87 mi) NE of here earthquakes near Rio Blanco County

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

Aftershocks so far

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

  1. 2.3 13 km NW of Steamboat Springs, Colorado
  2. 2.0 16 km WNW of Steamboat Springs, Colorado
  3. 3.1 21 km NW of Steamboat Springs, Colorado
  4. 2.8 20 km WNW of Encampment, Wyoming
  5. 1.7 26 km W of Walden, Colorado
  6. 2.9 28 km ENE of Dixon, Wyoming
  7. 1.5 37 km NNW of Steamboat Springs, Colorado
  8. 1.5 15 km WNW of Steamboat Springs, Colorado
  9. 1.9 42 km NNW of Steamboat Springs, 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.