QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

14 km ENE of Olathe, Colorado

· 3.3 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Delta County 22 kmMontrose County 47 kmOuray County 57 kmMesa County 67 kmGunnison County 67 kmSan Miguel County 89 kmSan Juan County 99 kmPitkin County 100 kmHinsdale County 103 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 2.7 (ml)
Depth
3.3 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Delta County, 22 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3517 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 38.6642, -107.8327. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Delta County, CO 22 km (14 mi) S of here earthquakes near Delta County
Montrose County, CO 47 km (29 mi) NE of here earthquakes near Montrose County
Ouray County, CO 57 km (35 mi) N of here earthquakes near Ouray County
Mesa County, CO 67 km (42 mi) SE of here earthquakes near Mesa County
Gunnison County, CO 67 km (42 mi) W of here earthquakes near Gunnison County
San Miguel County, CO 89 km (56 mi) NE of here earthquakes near San Miguel County

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

Aftershocks so far

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

  1. 1.5 13 km ENE of Paonia, Colorado
  2. 2.1 20 km WNW of Delta, Colorado
  3. 2.5 26 km WNW of Delta, Colorado
  4. 1.9 11 km E of Paonia, Colorado
  5. 1.6 9 km ESE of Paonia, Colorado
  6. 1.8 11 km NNE of Paonia, Colorado
  7. 1.5 22 km WNW of Delta, Colorado
  8. 2.9 17 km E 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.