QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

19 km SSW of Irwin, Idaho

· 5.0 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bonneville County 23 kmCaribou County 53 kmTeton County 58 kmMadison County 63 kmBingham County 81 kmBannock County 92 kmJefferson County 95 kmFremont County 107 kmBear Lake County 108 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
5.0 km below the surface
Felt
no reports yet
Nearest
Bonneville County, 23 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 503 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 19 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 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× the energy of this one
  4. This earthquake M 1.9 about 19 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 43.2555, -111.4048. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bonneville County, ID 23 km (15 mi) SE of here earthquakes near Bonneville County
Caribou County, ID 53 km (33 mi) NNE of here earthquakes near Caribou County
Teton County, ID 58 km (36 mi) SSW of here earthquakes near Teton County
Madison County, ID 63 km (39 mi) SSE of here earthquakes near Madison County
Bingham County, ID 81 km (50 mi) E of here earthquakes near Bingham County
Bannock County, ID 92 km (57 mi) NE of here earthquakes near Bannock County

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

Aftershocks so far

13 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. 2.7 26 km NE of Soda Springs, Idaho
  4. 1.8 19 km SW of Freedom, Idaho
  5. 2.6 5 km NNE of Star Valley Ranch, Wyoming
  6. 2.9 15 km WSW of Freedom, Idaho
  7. 2.0 13 km E of Irwin, Idaho
  8. 2.5 17 km E of Irwin, Idaho
  9. 2.0 9 km ESE of Alpine Northeast, Wyoming
  10. 2.3 3 km NNE of Star Valley Ranch, Wyoming
  11. 2.8 5 km NE of Star Valley Ranch, Wyoming
  12. 1.7 5 km N of Alpine Northeast, Wyoming
  13. 2.2 12 km NNW of Alpine Northeast, 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.