QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

1 km E of Alpine Northeast, Wyoming

· 6.0 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bonneville County 56 kmCaribou County 64 kmTeton County 65 kmMadison County 85 kmSublette County 99 kmBear Lake County 105 kmTeton County 105 kmLincoln County 110 kmBingham 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 1.9 (ml)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Bonneville County, 56 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1874 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 43.1958, -110.9868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bonneville County, ID 56 km (35 mi) ESE of here earthquakes near Bonneville County
Caribou County, ID 64 km (40 mi) NE of here earthquakes near Caribou County
Teton County, ID 65 km (41 mi) SSE of here earthquakes near Teton County
Madison County, ID 85 km (53 mi) SE of here earthquakes near Madison County
Sublette County, WY 99 km (62 mi) WNW of here earthquakes near Sublette County
Bear Lake County, ID 105 km (65 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

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

  1. 2.2 7 km NNW of Auburn, Wyoming
  2. 1.6 10 km NE of Hoback, Wyoming
  3. 2.0 26 km SSW of Irwin, Idaho
  4. 2.6 12 km NE of Star Valley Ranch, Wyoming
  5. 2.2 11 km NE of Star Valley Ranch, Wyoming
  6. 2.6 13 km NE of Star Valley Ranch, Wyoming
  7. 2.4 Wyoming
  8. 2.3 11 km NE of Star Valley Ranch, Wyoming
  9. 2.1 27 km SSW of Irwin, Idaho
  10. 3.3 10 km W of Hoback, Wyoming
  11. 2.8 7 km WSW of Hoback, Wyoming
  12. 1.9 15 km W of Freedom, Idaho
  13. 3.3 13 km W of Freedom, Idaho
  14. 2.8 13 km W of Freedom, Idaho
  15. 2.4 6 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.