QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

23 km E of Clayton, Idaho

· 4.9 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Custer County 12 kmLemhi County 76 kmBlaine County 97 kmButte County 98 kmCamas County 100 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 1.6 (ml)
Depth
4.9 km below the surface
Felt
no reports yet
Nearest
Custer County, 12 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2018 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 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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 44.2632, -114.1043. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Custer County, ID 12 km (7 mi) E of here earthquakes near Custer County
Lemhi County, ID 76 km (47 mi) SSW of here earthquakes near Lemhi County
Blaine County, ID 97 km (60 mi) N of here earthquakes near Blaine County
Butte County, ID 98 km (61 mi) NW of here earthquakes near Butte County
Camas County, ID 100 km (62 mi) NNE of here earthquakes near Camas County
Beaverhead County, MT 136 km (85 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

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

  1. 2.4 19 km SE of Challis, Idaho
  2. 1.5 19 km NNW of Challis, Idaho
  3. 1.8 17 km SSE of Clayton, Idaho
  4. 2.2 16 km ENE of Clayton, Idaho
  5. 1.7 14 km W of Challis, Idaho
  6. 1.6 18 km ENE of Clayton, Idaho
  7. 2.2 28 km SSE of Clayton, Idaho
  8. 1.7 19 km ENE of Clayton, Idaho
  9. 2.7 20 km ENE of Clayton, Idaho
  10. 1.8 19 km ENE of Clayton, Idaho
  11. 1.9 20 km ENE of Clayton, Idaho
  12. 1.7 17 km ENE of Clayton, Idaho
  13. 2.1 30 km N of Sun Valley, Idaho
  14. 2.0 15 km WNW of Clayton, Idaho
  15. 2.0 23 km SE of Challis, 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.