QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

6 km S of Alpine, Wyoming

· 5.0 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 55 kmBonneville County 58 kmTeton County 75 kmMadison County 92 kmBear Lake County 94 kmSublette County 97 kmLincoln County 101 kmBannock County 109 kmBingham County 113 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 2.7 (ml)
Depth
5.0 km below the surface
Felt
15 reports · strongest reported intensity IV
Nearest
Caribou County, 55 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1844 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 15 people have reported feeling it to USGS.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 43.1047, -111.0202. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 55 km (34 mi) NE of here earthquakes near Caribou County
Bonneville County, ID 58 km (36 mi) ESE of here earthquakes near Bonneville County
Teton County, ID 75 km (46 mi) SSE of here earthquakes near Teton County
Madison County, ID 92 km (57 mi) SE of here earthquakes near Madison County
Bear Lake County, ID 94 km (59 mi) NNE of here earthquakes near Bear Lake County
Sublette County, WY 97 km (60 mi) WNW of here earthquakes near Sublette County

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

Aftershocks so far

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

  1. 2.3 11 km NE of Star Valley Ranch, Wyoming
  2. 2.3 15 km E of Afton, Wyoming
  3. 2.1 27 km SSW of Irwin, Idaho
  4. 3.3 10 km W of Hoback, Wyoming
  5. 2.8 7 km WSW of Hoback, Wyoming
  6. 2.4 17 km W of Fairview, Wyoming
  7. 1.9 15 km W of Freedom, Idaho
  8. 3.3 13 km W of Freedom, Idaho
  9. 2.8 13 km W of Freedom, Idaho
  10. 2.3 12 km W of Fairview, Wyoming
  11. 1.6 12 km WNW of Fairview, Wyoming
  12. 2.4 6 km W of Hoback, Wyoming
  13. 1.7 4 km ENE of Hoback, Wyoming
  14. 1.8 6 km ENE of Hoback, Wyoming
  15. 1.7 14 km E of Irwin, Idaho

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.