QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

southern Idaho

· 5.0 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Custer County 12 kmLemhi County 71 kmButte County 102 kmBlaine County 103 kmCamas County 104 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 2.6 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Custer County, 12 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3200 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 44.3103, -114.1139. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Custer County, ID 12 km (7 mi) ENE of here earthquakes near Custer County
Lemhi County, ID 71 km (44 mi) SSW of here earthquakes near Lemhi County
Butte County, ID 102 km (63 mi) NW of here earthquakes near Butte County
Blaine County, ID 103 km (64 mi) N of here earthquakes near Blaine County
Camas County, ID 104 km (65 mi) NNE of here earthquakes near Camas County
Beaverhead County, MT 133 km (83 mi) SW of here earthquakes near Beaverhead County

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

Aftershocks so far

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

  1. 1.8 14 km W of Clayton, Idaho
  2. 2.3 18 km W of Clayton, Idaho
  3. 1.9 13 km W of Clayton, Idaho
  4. 2.3 13 km W of Clayton, Idaho
  5. 2.1 14 km W of Clayton, Idaho
  6. 2.0 southern Idaho
  7. 1.7 14 km W of Clayton, Idaho
  8. 2.0 22 km SSE of Clayton, Idaho
  9. 1.8 12 km W of Clayton, Idaho
  10. 1.6 22 km NNW of Clayton, Idaho
  11. 1.9 14 km W of Clayton, Idaho
  12. 1.7 7 km NNW of Challis, Idaho
  13. 2.4 14 km NW of Challis, Idaho
  14. 1.6 11 km WNW of Clayton, Idaho
  15. 2.1 13 km W of Clayton, 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.