QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

15 km NE of Star Valley Ranch, Wyoming

· 5.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caribou County 67 kmBonneville County 75 kmSublette County 80 kmTeton County 84 kmLincoln County 93 kmBear Lake County 96 kmMadison County 106 kmTeton County 114 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 2.8 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Caribou County, 67 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 442 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 43.0639, -110.8105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caribou County, ID 67 km (42 mi) ENE of here earthquakes near Caribou County
Bonneville County, ID 75 km (47 mi) ESE of here earthquakes near Bonneville County
Sublette County, WY 80 km (50 mi) WNW of here earthquakes near Sublette County
Teton County, ID 84 km (52 mi) SSE of here earthquakes near Teton County
Lincoln County, WY 93 km (58 mi) N of here earthquakes near Lincoln County
Bear Lake County, ID 96 km (60 mi) NNE of here earthquakes near Bear Lake County

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

Aftershocks so far

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

  1. 2.2 1 km E of Alpine Northeast, Wyoming
  2. 2.9 23 km WNW of Auburn, Wyoming
  3. 2.2 23 km ESE of Jackson, Wyoming
  4. 2.3 22 km ESE of Jackson, Wyoming
  5. 2.1 23 km ESE of Jackson, Wyoming
  6. 2.0 23 km ESE of Jackson, Wyoming
  7. 2.4 17 km WSW of Auburn, Wyoming
  8. 2.3 10 km SW of Auburn, Wyoming
  9. 2.0 3 km NE of Hoback, Wyoming
  10. 1.8 19 km SW of Freedom, Idaho
  11. 1.8 17 km WSW of Auburn, Wyoming
  12. 1.7 18 km WSW of Auburn, Wyoming
  13. 2.6 5 km NNE of Star Valley Ranch, Wyoming
  14. 2.9 15 km WSW of Freedom, Idaho
  15. 2.0 13 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.8 on 2016-08-27 — it released about 1,000 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.