QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

2 km SSE of Eaton, Colorado

· 9.8 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Weld County 28 kmBroomfield County 68 kmLarimer County 68 kmBoulder County 75 kmAdams County 77 kmMorgan County 80 kmDenver County 84 kmLaramie County 88 kmGilpin County 100 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
9.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Weld County, 28 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3599 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has 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 40.5055, -104.7029. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Weld County, CO 28 km (17 mi) WSW of here earthquakes near Weld County
Broomfield County, CO 68 km (42 mi) NNE of here earthquakes near Broomfield County
Larimer County, CO 68 km (42 mi) ESE of here earthquakes near Larimer County
Boulder County, CO 75 km (46 mi) NE of here earthquakes near Boulder County
Adams County, CO 77 km (48 mi) NNW of here earthquakes near Adams County
Morgan County, CO 80 km (50 mi) WNW of here earthquakes near Morgan County

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

Aftershocks so far

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

  1. 2.3 2 km SW of Gilcrest, Colorado
  2. 2.3 4 km ENE of Greeley, Colorado
  3. 1.9 8 km ENE of Greeley, Colorado
  4. 2.9 7 km NE of Greeley, Colorado
  5. 2.3 8 km ENE of Greeley, Colorado
  6. 1.7 7 km ENE of Greeley, Colorado
  7. 2.3 8 km ENE of Greeley, Colorado
  8. 2.1 5 km NE of Greeley, Colorado
  9. 1.9 5 km ENE of Greeley, Colorado
  10. 1.8 5 km NE of Greeley, Colorado
  11. 2.0 8 km NNW of Kersey, CO
  12. 2.2 8 km ENE of Greeley, Colorado
  13. 3.0 8 km ENE of Greeley, Colorado
  14. 2.7 8 km ENE of Greeley, Colorado
  15. 1.6 5 km ENE of Greeley, 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.