QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

3 km WNW of Fort Bridger, Wyoming

· 38 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Uinta County 13 kmSummit County 68 kmRich County 76 kmDaggett County 91 kmMorgan County 100 kmLincoln County 103 kmDuchesne County 115 kmCache County 119 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 2.1 (ml)
Depth
38 km below the surface
Felt
no reports yet
Nearest
Uinta County, 13 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2928 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 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 41.3267, -110.4193. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Uinta County, WY 13 km (8 mi) ENE of here earthquakes near Uinta County
Summit County, UT 68 km (42 mi) NE of here earthquakes near Summit County
Rich County, UT 76 km (47 mi) ESE of here earthquakes near Rich County
Daggett County, UT 91 km (56 mi) WNW of here earthquakes near Daggett County
Morgan County, UT 100 km (62 mi) ENE of here earthquakes near Morgan County
Lincoln County, WY 103 km (64 mi) SSE of here earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 2.4 11 km NE of Lyman, Wyoming
  2. 1.6 13 km SSW of Granger, Wyoming
  3. 1.8 20 km ESE of Evanston, Wyoming
  4. 1.6 14 km SSW of Granger, Wyoming
  5. 1.7 19 km NE of Bear River, Wyoming
  6. 1.9 22 km ESE of Evanston, Wyoming
  7. 2.2 20 km ESE of Evanston, Wyoming
  8. 2.0 20 km ESE of Evanston, Wyoming
  9. 2.1 7 km NNW of Robertson, Wyoming
  10. 2.3 9 km WNW of Fort Bridger, Wyoming
  11. 1.9 6 km ESE of Mountain View, Wyoming
  12. 1.8 2 km WNW of Granger, Wyoming
  13. 2.1 3 km WSW of Fort Bridger, Wyoming
  14. 1.9 19 km SW of Lonetree, Wyoming
  15. 2.0 14 km NE of Lonetree, 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.