QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

24 km N of Blanca, Colorado

· 5.0 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alamosa County 29 kmCostilla County 42 kmHuerfano County 46 kmCuster County 50 kmSaguache County 78 kmConejos County 79 kmRio Grande County 87 kmFremont County 89 kmPueblo County 104 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 2.2 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Alamosa County, 29 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2269 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 37.6570, -105.4844. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alamosa County, CO 29 km (18 mi) ENE of here earthquakes near Alamosa County
Costilla County, CO 42 km (26 mi) N of here earthquakes near Costilla County
Huerfano County, CO 46 km (29 mi) W of here earthquakes near Huerfano County
Custer County, CO 50 km (31 mi) S of here earthquakes near Custer County
Saguache County, CO 78 km (48 mi) ESE of here earthquakes near Saguache County
Conejos County, CO 79 km (49 mi) NE of here earthquakes near Conejos County

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

Aftershocks so far

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

  1. 1.8 21 km WSW of Beulah Valley, Colorado
  2. 1.5 19 km NNE of Fort Garland, Colorado
  3. 1.6 6 km W of La Veta, Colorado
  4. 1.6 5 km WSW of La Veta, Colorado
  5. 1.6 3 km WNW of La Veta, Colorado
  6. 1.8 3 km W of La Veta, Colorado
  7. 1.5 3 km WNW of La Veta, Colorado
  8. 1.5 5 km NNW of La Veta, Colorado
  9. 2.1 3 km WNW of La Veta, Colorado
  10. 1.5 3 km W of La Veta, Colorado
  11. 2.4 2 km WNW of La Veta, Colorado
  12. 1.7 4 km W of La Veta, Colorado
  13. 1.5 20 km N of Blanca, Colorado
  14. 1.7 Colorado
  15. 1.5 26 km N of Fort Garland, 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

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