QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

12 km SW of Saint Charles, Idaho

· 6.5 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 31 kmBear Lake County 31 kmCache County 39 kmRich County 50 kmLincoln County 71 kmCaribou County 84 kmOneida County 86 kmWeber County 91 kmBannock County 94 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 2.3 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Franklin County, 31 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 496 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 79 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 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 42.0348, -111.5023. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Franklin County, ID 31 km (19 mi) ESE of here earthquakes near Franklin County
Bear Lake County, ID 31 km (20 mi) SSW of here earthquakes near Bear Lake County
Cache County, UT 39 km (24 mi) NNE of here earthquakes near Cache County
Rich County, UT 50 km (31 mi) NNW of here earthquakes near Rich County
Lincoln County, WY 71 km (44 mi) WSW of here earthquakes near Lincoln County
Caribou County, ID 84 km (52 mi) S of here earthquakes near Caribou County

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

Aftershocks so far

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

  1. 0.8 9 km W of Garden, Utah
  2. 1.8 1 km SE of Cornish, Utah
  3. 1.7 1 km SE of Cornish, Utah
  4. 1.9 6 km W of Bennington, Idaho
  5. 1.8 7 km WSW of Bennington, Idaho
  6. 1.6 17 km E of North Logan, Utah
  7. 2.2 7 km WNW of Bennington, Idaho
  8. 1.5 6 km WSW of Bennington, Idaho
  9. 2.0 6 km W of Bennington, Idaho
  10. 3.2 6 km WSW of Bennington, Idaho
  11. 1.9 6 km WSW of Bennington, Idaho
  12. 3.0 6 km WSW of Bennington, Idaho
  13. 1.6 15 km E of Providence, Utah
  14. 2.6 15 km W of Paris, Idaho
  15. 1.6 13 km ESE of Millville, Utah

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.