QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

20 km WNW of Encampment, Wyoming

· 9.3 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carbon County 45 kmJackson County 90 kmRoutt County 91 kmAlbany County 114 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 2.8 (ml)
Depth
9.3 km below the surface
Felt
no reports yet
Nearest
Carbon County, 45 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1394 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 41.2984, -106.9976. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carbon County, WY 45 km (28 mi) S of here earthquakes near Carbon County
Jackson County, CO 90 km (56 mi) NW of here earthquakes near Jackson County
Routt County, CO 91 km (56 mi) N of here earthquakes near Routt County
Albany County, WY 114 km (71 mi) WSW of here earthquakes near Albany County
Moffat County, CO 128 km (79 mi) NE of here earthquakes near Moffat County

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

Aftershocks so far

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

  1. 3.4 9 km SSE of Saratoga, Wyoming
  2. 3.3 8 km SSE of Saratoga, Wyoming
  3. 3.6 9 km SSE of Saratoga, Wyoming
  4. 2.5 3 km NE of Saratoga, Wyoming

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.