QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

20 km ESE of Evanston, Wyoming

· 6.0 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Uinta County 20 kmSummit County 39 kmRich County 65 kmMorgan County 70 kmWeber County 95 kmWasatch County 100 kmDuchesne County 102 kmCache County 104 kmDaggett County 109 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
6.0 km below the surface
Felt
no reports yet
Nearest
Uinta County, 20 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 248 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 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× 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 41.1782, -110.7445. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Uinta County, WY 20 km (12 mi) SW of here earthquakes near Uinta County
Summit County, UT 39 km (24 mi) NNE of here earthquakes near Summit County
Rich County, UT 65 km (40 mi) SE of here earthquakes near Rich County
Morgan County, UT 70 km (44 mi) E of here earthquakes near Morgan County
Weber County, UT 95 km (59 mi) E of here earthquakes near Weber County
Wasatch County, UT 100 km (62 mi) NNE of here earthquakes near Wasatch County

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

Aftershocks so far

16 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. 2.1 42 km ENE of Oakley, Utah
  8. 2.7 41 km ENE of Oakley, Utah
  9. 2.2 42 km ENE of Oakley, Utah
  10. 1.9 41 km SSE of Evanston, Wyoming
  11. 3.0 41 km SSE of Evanston, Wyoming
  12. 2.0 43 km NE of Samak, Utah
  13. 1.6 42 km NE of Samak, Utah
  14. 2.0 42 km ENE of Oakley, Utah
  15. 4.7 40 km S of Evanston, 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.