QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

19 km WNW of Naturita, Colorado

· 5.7 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Miguel County 42 kmMontrose County 48 kmDolores County 64 kmOuray County 88 kmMesa County 89 kmDelta County 104 kmGrand County 104 kmMontezuma County 104 kmSan Juan County 112 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 2.1 (ml)
Depth
5.7 km below the surface
Felt
no reports yet
Nearest
San Miguel County, 42 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2352 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 38.2651, -108.7878. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Miguel County, CO 42 km (26 mi) NW of here earthquakes near San Miguel County
Montrose County, CO 48 km (30 mi) WSW of here earthquakes near Montrose County
Dolores County, CO 64 km (40 mi) NNW of here earthquakes near Dolores County
Ouray County, CO 88 km (55 mi) W of here earthquakes near Ouray County
Mesa County, CO 89 km (55 mi) SSW of here earthquakes near Mesa County
Delta County, CO 104 km (65 mi) SW of here earthquakes near Delta County

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

Aftershocks so far

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

  1. 1.5 26 km ESE of La Sal, Utah
  2. 2.0 29 km E of La Sal, Utah
  3. 1.6 28 km ESE of La Sal, Utah
  4. 2.1 28 km E of La Sal, Utah
  5. 2.2 28 km E of La Sal, Utah
  6. 2.0 28 km E of La Sal, Utah
  7. 2.1 28 km E of La Sal, Utah
  8. 1.6 30 km E of La Sal, Utah
  9. 1.5 29 km E of La Sal, Utah
  10. 1.5 29 km E of La Sal, Utah
  11. 2.1 20 km WSW of Naturita, Colorado
  12. 1.7 28 km E of La Sal, Utah
  13. 2.3 29 km E of La Sal, UT
  14. 1.9 28 km E of La Sal, Utah
  15. 1.7 28 km E of La Sal, Utah

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2019-03-04 — it released about 3,800 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.