QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

28 km S of Clayton, Idaho

· 10 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Custer County 33 kmCamas County 62 kmBlaine County 77 kmBoise County 104 kmButte County 105 kmElmore County 108 kmLemhi County 112 kmLincoln County 114 kmGooding County 119 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
10 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Custer County, 33 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2098 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 85 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 5.8 180,000× 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 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 43.9984, -114.4126. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Custer County, ID 33 km (21 mi) SSW of here earthquakes near Custer County
Camas County, ID 62 km (39 mi) NNE of here earthquakes near Camas County
Blaine County, ID 77 km (48 mi) NNW of here earthquakes near Blaine County
Boise County, ID 104 km (65 mi) E of here earthquakes near Boise County
Butte County, ID 105 km (65 mi) WNW of here earthquakes near Butte County
Elmore County, ID 108 km (67 mi) NE of here earthquakes near Elmore County

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

Aftershocks so far

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

  1. 2.6 24 km NE of Stanley, Idaho
  2. 2.5 25 km NE of Stanley, Idaho
  3. 2.0 14 km ENE of Stanley, Idaho
  4. 2.0 15 km ENE of Stanley, Idaho
  5. 2.9 14 km ENE of Stanley, Idaho
  6. 1.9 15 km ENE of Stanley, Idaho
  7. 1.8 11 km NE of Stanley, Idaho
  8. 1.8 southern Idaho
  9. 2.1 18 km S of Stanley, Idaho
  10. 2.0 4 km NNE of Stanley, Idaho
  11. 2.3 13 km NE of Stanley, Idaho
  12. 2.6 10 km NE of Stanley, Idaho
  13. 2.1 15 km ENE of Stanley, Idaho
  14. 2.4 19 km S of Stanley, Idaho
  15. 3.2 14 km S of Stanley, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.