QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

28 km SW of Lonetree, Wyoming

· -0.2 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Uinta County 49 kmSummit County 50 kmDuchesne County 64 kmDaggett County 73 kmWasatch County 89 kmMorgan County 104 kmUintah County 110 kmRich County 111 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 1.9 (md)
Depth
-0.2 km below the surface
Felt
no reports yet
Nearest
Uinta County, 49 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3101 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 40.8675, -110.3787. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Uinta County, WY 49 km (30 mi) SSE of here earthquakes near Uinta County
Summit County, UT 50 km (31 mi) E of here earthquakes near Summit County
Duchesne County, UT 64 km (40 mi) N of here earthquakes near Duchesne County
Daggett County, UT 73 km (46 mi) W of here earthquakes near Daggett County
Wasatch County, UT 89 km (55 mi) NE of here earthquakes near Wasatch County
Morgan County, UT 104 km (64 mi) ESE of here earthquakes near Morgan County

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

Aftershocks so far

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

  1. 1.6 24 km SE of Evanston, Wyoming
  2. 1.9 42 km SSE of Evanston, Wyoming
  3. 2.0 42 km SSE of Evanston, Wyoming
  4. 2.2 42 km SSE of Evanston, Wyoming
  5. 2.2 42 km SSE of Evanston, Wyoming
  6. 1.6 43 km NE of Samak, Utah
  7. 2.5 28 km NNW of Tabiona, Utah
  8. 2.1 42 km ENE of Oakley, Utah
  9. 2.7 41 km ENE of Oakley, Utah
  10. 2.2 42 km ENE of Oakley, Utah
  11. 1.9 41 km SSE of Evanston, Wyoming
  12. 3.0 41 km SSE of Evanston, Wyoming
  13. 2.0 43 km NE of Samak, Utah
  14. 1.6 42 km NE of Samak, Utah
  15. 2.0 42 km ENE of Oakley, Utah

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2016-05-25 — it released about 1,700 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.