QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

21 km ESE of Colorado City, Colorado

· 5.0 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pueblo County 34 kmHuerfano County 37 kmCuster County 72 kmOtero County 78 kmLas Animas County 79 kmCrowley County 88 kmFremont County 96 kmCostilla County 98 kmEl Paso County 107 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 2.6 (mb_lg)
Depth
5.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Pueblo County, 34 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 170 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 37.8708, -104.6103. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pueblo County, CO 34 km (21 mi) SSW of here earthquakes near Pueblo County
Huerfano County, CO 37 km (23 mi) ENE of here earthquakes near Huerfano County
Custer County, CO 72 km (45 mi) ESE of here earthquakes near Custer County
Otero County, CO 78 km (48 mi) W of here earthquakes near Otero County
Las Animas County, CO 79 km (49 mi) NW of here earthquakes near Las Animas County
Crowley County, CO 88 km (55 mi) WSW of here earthquakes near Crowley County

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

Aftershocks so far

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

  1. 1.8 10 km SW of Walsenburg, Colorado
  2. 1.5 10 km SW of Walsenburg, Colorado
  3. 2.4 10 km SW of Walsenburg, Colorado
  4. 2.7 8 km SW of Walsenburg, Colorado
  5. 2.5 12 km NNW of Walsenburg, Colorado
  6. 2.9 5 km SSW of Walsenburg, Colorado
  7. 2.3 7 km SW of Walsenburg, Colorado
  8. 2.3 5 km SSW of Walsenburg, Colorado
  9. 2.4 15 km ENE of Colorado City, 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.