QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

21 km NNW of Maybell, Colorado

· 5.5 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Moffat County 11 kmRio Blanco County 81 kmRoutt County 103 kmDaggett County 114 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
5.5 km below the surface
Felt
no reports yet
Nearest
Moffat County, 11 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2412 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 40.7035, -108.1681. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Moffat County, CO 11 km (7 mi) NNE of here earthquakes near Moffat County
Rio Blanco County, CO 81 km (51 mi) N of here earthquakes near Rio Blanco County
Routt County, CO 103 km (64 mi) WNW of here earthquakes near Routt County
Daggett County, UT 114 km (71 mi) E of here earthquakes near Daggett County
Sweetwater County, WY 122 km (76 mi) SSE of here earthquakes near Sweetwater County
Uintah County, UT 131 km (81 mi) ENE of here earthquakes near Uintah County

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

Aftershocks so far

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

  1. 2.1 21 km NE of Maybell, Colorado
  2. 2.2 19 km WNW of Maybell, Colorado
  3. 2.2 29 km NNW of Maybell, Colorado
  4. 2.3 11 km ESE of Maybell, Colorado
  5. 2.6 20 km ENE of Maybell, Colorado
  6. 2.4 7 km SSE of Maybell, Colorado
  7. 1.6 39 km NNE of Rangely, Colorado
  8. 1.7 40 km W of Maybell, Colorado
  9. 2.0 15 km SSW of Maybell, Colorado
  10. 1.9 36 km WNW of Maybell, Colorado
  11. 2.0 12 km NNE of Maybell, 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.