QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

2 km NNE of Freedom, Idaho

· 4.4 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 49 kmBonneville County 65 kmBear Lake County 84 kmTeton County 85 kmLincoln County 91 kmSublette County 94 kmMadison County 101 kmBannock County 104 kmFranklin 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 1.8 (ml)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Caribou County, 49 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1081 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 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× 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 43.0052, -111.0258. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 49 km (30 mi) ENE of here earthquakes near Caribou County
Bonneville County, ID 65 km (40 mi) SE of here earthquakes near Bonneville County
Bear Lake County, ID 84 km (52 mi) NNE of here earthquakes near Bear Lake County
Teton County, ID 85 km (53 mi) S of here earthquakes near Teton County
Lincoln County, WY 91 km (56 mi) NNW of here earthquakes near Lincoln County
Sublette County, WY 94 km (59 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

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

  1. 2.7 7 km SW of Freedom, Idaho
  2. 2.2 6 km W of Thayne, Wyoming
  3. 1.7 5 km NE of Hoback, Wyoming
  4. 1.5 6 km NE of Hoback, Wyoming
  5. 1.9 13 km SW of Fairview, Wyoming
  6. 2.6 13 km SW of Fairview, Wyoming
  7. 2.0 4 km NNE of Alpine Northeast, Wyoming
  8. 1.7 6 km NNW of Hoback, Wyoming
  9. 1.9 4 km E of Hoback, Wyoming
  10. 1.5 6 km ENE of Hoback, Wyoming
  11. 1.9 6 km NE of Hoback, Wyoming
  12. 2.3 17 km NE of Star Valley Ranch, Wyoming
  13. 2.8 15 km NE of Star Valley Ranch, Wyoming
  14. 1.8 17 km WSW of Wilson, Wyoming
  15. 2.4 7 km W of Hoback, 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.