QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

3 km ESE of Ellicott, Colorado

· 5.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N El Paso County 15 kmElbert County 58 kmTeller County 73 kmPueblo County 74 kmDouglas County 75 kmLincoln County 75 kmCrowley County 76 kmArapahoe County 91 kmFremont County 102 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 1.7 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
El Paso County, 15 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2310 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 38.8229, -104.3487. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
El Paso County, CO 15 km (10 mi) E of here earthquakes near El Paso County
Elbert County, CO 58 km (36 mi) SSW of here earthquakes near Elbert County
Teller County, CO 73 km (45 mi) E of here earthquakes near Teller County
Pueblo County, CO 74 km (46 mi) N of here earthquakes near Pueblo County
Douglas County, CO 75 km (47 mi) SE of here earthquakes near Douglas County
Lincoln County, CO 75 km (47 mi) WSW of here earthquakes near Lincoln County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 3.0 11 km NNE of Black Forest, 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.