QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

2 km NNW of El Jebel, Colorado

· 5.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pitkin County 27 kmEagle County 42 kmLake County 68 kmGarfield County 73 kmGunnison County 83 kmSummit County 86 kmDelta County 90 kmChaffee County 102 kmRio Blanco 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
5.0 km below the surface
Felt
16 reports · strongest reported intensity IV
Nearest
Pitkin County, 27 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1836 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 16 people have reported feeling it to USGS.

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 39.4128, -107.0995. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pitkin County, CO 27 km (17 mi) NW of here earthquakes near Pitkin County
Eagle County, CO 42 km (26 mi) SW of here earthquakes near Eagle County
Lake County, CO 68 km (43 mi) WNW of here earthquakes near Lake County
Garfield County, CO 73 km (45 mi) ESE of here earthquakes near Garfield County
Gunnison County, CO 83 km (51 mi) N of here earthquakes near Gunnison County
Summit County, CO 86 km (53 mi) WSW of here earthquakes near Summit 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. 2.2 10 km NW of Dotsero, Colorado
  2. 2.8 10 km NE of Redstone, Colorado
  3. 2.6 12 km S of Mulford, Colorado
  4. 2.1 6 km NNW of Chacra, Colorado
  5. 2.9 6 km NNE of Chacra, Colorado
  6. 1.9 6 km WNW of Snowmass Village, Colorado
  7. 2.5 7 km NNW of Chacra, Colorado
  8. 2.6 6 km NNW of Chacra, Colorado
  9. 2.9 8 km NNW of Chacra, Colorado
  10. 2.1 9 km NNE of New Castle, Colorado
  11. 2.5 6 km NNW of Gypsum, 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.