QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

11 km SE of Alta, Wyoming

· 3.9 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 24 kmTeton County 57 kmMadison County 60 kmBonneville County 65 kmFremont County 74 kmCaribou County 112 kmJefferson County 112 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 1.5 (ml)
Depth
3.9 km below the surface
Felt
no reports yet
Nearest
Teton County, 24 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2742 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 43.6848, -110.9273. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, ID 24 km (15 mi) ESE of here earthquakes near Teton County
Teton County, WY 57 km (35 mi) SW of here earthquakes near Teton County
Madison County, ID 60 km (37 mi) E of here earthquakes near Madison County
Bonneville County, ID 65 km (40 mi) ENE of here earthquakes near Bonneville County
Fremont County, ID 74 km (46 mi) SE of here earthquakes near Fremont County
Caribou County, ID 112 km (69 mi) NNE of here earthquakes near Caribou County

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

Aftershocks so far

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

  1. 3.6 17 km ESE of Kelly, Wyoming
  2. 2.1 12 km W of Wilson, Wyoming
  3. 1.7 10 km SSE of Victor, Idaho
  4. 1.7 11 km ENE of Alta, Wyoming
  5. 2.4 46 km NNE of Alta, Wyoming
  6. 2.3 5 km SSW of Driggs, Idaho
  7. 2.0 45 km NE of Alta, Wyoming
  8. 1.6 23 km N of Bondurant, Wyoming
  9. 1.9 8 km NW of Hoback, Wyoming
  10. 1.8 6 km NNE of Alpine Northeast, Wyoming
  11. 2.3 3 km SSE of Jackson, Wyoming
  12. 2.1 16 km WSW of Rafter J Ranch, Wyoming
  13. 2.1 7 km SE of Victor, Idaho
  14. 3.7 17 km E of Kelly, Wyoming
  15. 1.6 18 km SSE of Kelly, 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 4.0 on 2016-02-26 — it released about 5,600 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.