QuakeIndex

rock burst · reviewed by a seismologist

M 1.9ml

11 km E of Paonia, Colorado

· 1.0 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Delta County 35 kmGunnison County 43 kmPitkin County 60 kmOuray County 86 kmMesa County 88 kmMontrose County 88 kmGarfield County 88 kmChaffee County 102 kmLake County 102 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 1.9 (ml)
Depth
1.0 km below the surface
Felt
no reports yet
Nearest
Delta County, 35 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2268 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as rock burst, not an earthquake.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 38.8874, -107.4607. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Delta County, CO 35 km (22 mi) E of here earthquakes near Delta County
Gunnison County, CO 43 km (26 mi) NW of here earthquakes near Gunnison County
Pitkin County, CO 60 km (37 mi) SW of here earthquakes near Pitkin County
Ouray County, CO 86 km (54 mi) NNE of here earthquakes near Ouray County
Mesa County, CO 88 km (54 mi) E of here earthquakes near Mesa County
Montrose County, CO 88 km (55 mi) NE of here earthquakes near Montrose County

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

Aftershocks so far

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

  1. 2.8 10 km NE of Redstone, Colorado
  2. 1.5 13 km ENE of Paonia, 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.