QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

15 km NNE of Hoehne, Colorado

· 7.6 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Las Animas County 28 kmHuerfano County 63 kmOtero County 75 kmPueblo County 84 kmColfax County 94 kmCostilla County 98 kmCrowley County 110 kmCuster County 119 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
7.6 km below the surface
Felt
no reports yet
Nearest
Las Animas County, 28 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1666 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 37.4183, -104.3356. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Las Animas County, CO 28 km (17 mi) WNW of here earthquakes near Las Animas County
Huerfano County, CO 63 km (39 mi) ESE of here earthquakes near Huerfano County
Otero County, CO 75 km (47 mi) SW of here earthquakes near Otero County
Pueblo County, CO 84 km (52 mi) S of here earthquakes near Pueblo County
Colfax County, NM 94 km (58 mi) NNE of here earthquakes near Colfax County
Costilla County, CO 98 km (61 mi) E of here earthquakes near Costilla County

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

Aftershocks so far

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

  1. 2.2 8 km N of Segundo, Colorado
  2. 1.5 9 km N of Segundo, Colorado
  3. 1.6 10 km N of Segundo, Colorado
  4. 1.5 Colorado
  5. 3.2 6 km NNW of Segundo, Colorado
  6. 1.5 8 km N of Segundo, Colorado
  7. 1.8 11 km NNW of Segundo, Colorado
  8. 2.4 8 km N of Segundo, Colorado
  9. 1.6 8 km NNW of Segundo, Colorado
  10. 1.9 10 km NNW of Segundo, Colorado
  11. 1.6 8 km NNE of Segundo, Colorado
  12. 1.9 7 km N of Segundo, Colorado
  13. 2.0 Colorado
  14. 3.9 5 km N of Sequndo, Colorado
  15. 3.5 8 km N of Segundo, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2017-12-30 — it released about 710 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.