QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

8 km E of Star Valley Ranch, Wyoming

· 10 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 60 kmSublette County 79 kmBonneville County 79 kmLincoln County 83 kmBear Lake County 85 kmTeton County 94 kmMadison County 113 kmBannock County 116 kmFranklin 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 2.5 (ml)
Depth
10 km below the surface
Felt
3 reports · strongest reported intensity IV
Nearest
Caribou County, 60 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 710 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 42.9620, -110.8488. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 60 km (37 mi) ENE of here earthquakes near Caribou County
Sublette County, WY 79 km (49 mi) WNW of here earthquakes near Sublette County
Bonneville County, ID 79 km (49 mi) SE of here earthquakes near Bonneville County
Lincoln County, WY 83 km (51 mi) N of here earthquakes near Lincoln County
Bear Lake County, ID 85 km (53 mi) NNE of here earthquakes near Bear Lake County
Teton County, ID 94 km (58 mi) SSE of here earthquakes near Teton 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 26 km NE of Soda Springs, Idaho
  2. 1.9 13 km WSW of Fairview, Wyoming
  3. 2.3 10 km SW of Auburn, Wyoming
  4. 2.0 3 km NE of Hoback, Wyoming
  5. 2.5 18 km W of Fairview, Wyoming
  6. 3.6 13 km W of Fairview, Wyoming
  7. 1.8 19 km SW of Freedom, Idaho
  8. 2.3 17 km W of Fairview, Wyoming
  9. 1.8 17 km WSW of Auburn, Wyoming
  10. 1.7 18 km WSW of Auburn, Wyoming
  11. 2.6 5 km NNE of Star Valley Ranch, Wyoming
  12. 2.9 15 km WSW of Freedom, Idaho
  13. 1.6 22 km ENE of Soda Springs, Idaho
  14. 2.8 22 km NNE of Georgetown, Idaho
  15. 3.2 20 km W of Fairview, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2016-08-27 — it released about 2,800 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.