QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7mwr

9 km NW of Pritchett, Colorado

· 16 km deep · released about 5.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Baca County 36 kmBent County 57 kmProwers County 75 kmCimarron County 84 kmOtero County 86 kmLas Animas County 100 kmStanton County 101 kmMorton County 102 kmKiowa 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 3.7 (mwr)
Depth
16 km below the surface
Felt
39 reports · strongest reported intensity V
Measured shaking
intensity IV (ShakeMap)
Nearest
Baca County, 36 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1769 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 39 people have reported feeling it to USGS.

How big was it?

This earthquake released about 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 32,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× more

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 37.4346, -102.9250. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Baca County, CO 36 km (23 mi) WNW of here earthquakes near Baca County
Bent County, CO 57 km (35 mi) SSE of here earthquakes near Bent County
Prowers County, CO 75 km (46 mi) SW of here earthquakes near Prowers County
Cimarron County, OK 84 km (52 mi) NNW of here earthquakes near Cimarron County
Otero County, CO 86 km (53 mi) SE of here earthquakes near Otero County
Las Animas County, CO 100 km (62 mi) E of here earthquakes near Las Animas County

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

Aftershocks so far

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

  1. 1.8 25 km E of Kim, Colorado
  2. 2.2 32 km NW of Two Buttes, Colorado
  3. 1.9 20 km NNW of Kenton, Oklahoma
  4. 1.9 23 km W of Pritchett, Colorado
  5. 1.6 10 km NW of Pritchett, 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.