QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

16 km WSW of Loghill Village, Colorado

· 5.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ouray County 15 kmMontrose County 39 kmSan Miguel County 44 kmSan Juan County 48 kmHinsdale County 63 kmDolores County 66 kmDelta County 80 kmLa Plata County 96 kmGunnison County 98 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 1.8 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Ouray County, 15 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 577 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 38.1456, -107.9613. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ouray County, CO 15 km (9 mi) W of here earthquakes near Ouray County
Montrose County, CO 39 km (25 mi) SE of here earthquakes near Montrose County
San Miguel County, CO 44 km (27 mi) ENE of here earthquakes near San Miguel County
San Juan County, CO 48 km (30 mi) NNW of here earthquakes near San Juan County
Hinsdale County, CO 63 km (39 mi) NW of here earthquakes near Hinsdale County
Dolores County, CO 66 km (41 mi) NE of here earthquakes near Dolores County

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

Aftershocks so far

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

  1. 2.6 15 km SSW of Sawpit, Colorado
  2. 2.0 6 km NW of Rico, 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.